Unawatuna weather by month

Check out Unawatuna weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Unawatuna (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
29°C maximum daytime temperature in January in Unawatuna29
30°C maximum daytime temperature in February in Unawatuna30
31°C maximum daytime temperature in March in Unawatuna31
31°C maximum daytime temperature in April in Unawatuna31
30°C maximum daytime temperature in May in Unawatuna30
29°C maximum daytime temperature in June in Unawatuna29
29°C maximum daytime temperature in July in Unawatuna29
29°C maximum daytime temperature in August in Unawatuna29
29°C maximum daytime temperature in September in Unawatuna29
29°C maximum daytime temperature in October in Unawatuna29
29°C maximum daytime temperature in November in Unawatuna29
29°C maximum daytime temperature in December in Unawatuna29
Min temperature (night-time)
22°C minimum night-time temperature in January in Unawatuna22
22°C minimum night-time temperature in February in Unawatuna22
23°C minimum night-time temperature in March in Unawatuna23
24°C minimum night-time temperature in April in Unawatuna24
25°C minimum night-time temperature in May in Unawatuna25
24°C minimum night-time temperature in June in Unawatuna24
24°C minimum night-time temperature in July in Unawatuna24
24°C minimum night-time temperature in August in Unawatuna24
24°C minimum night-time temperature in September in Unawatuna24
23°C minimum night-time temperature in October in Unawatuna23
22°C minimum night-time temperature in November in Unawatuna22
22°C minimum night-time temperature in December in Unawatuna22
Heat & Humidity
High heat & humidity in January in UnawatunaH
High heat & humidity in February in UnawatunaH
High heat & humidity in March in UnawatunaH
High heat & humidity in April in UnawatunaH
High heat & humidity in May in UnawatunaH
High heat & humidity in June in UnawatunaH
High heat & humidity in July in UnawatunaH
High heat & humidity in August in UnawatunaH
High heat & humidity in September in UnawatunaH
High heat & humidity in October in UnawatunaH
High heat & humidity in November in UnawatunaH
High heat & humidity in December in UnawatunaH
Sea temperature
28°C sea temperature in January in Unawatuna28
28°C sea temperature in February in Unawatuna28
29°C sea temperature in March in Unawatuna29
29°C sea temperature in April in Unawatuna29
29°C sea temperature in May in Unawatuna29
28°C sea temperature in June in Unawatuna28
27°C sea temperature in July in Unawatuna27
27°C sea temperature in August in Unawatuna27
28°C sea temperature in September in Unawatuna28
28°C sea temperature in October in Unawatuna28
28°C sea temperature in November in Unawatuna28
28°C sea temperature in December in Unawatuna28

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Unawatuna

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
12 hours of daylight per day in January in Unawatuna12
12 hours of daylight per day in February in Unawatuna12
12 hours of daylight per day in March in Unawatuna12
12 hours of daylight per day in April in Unawatuna12
12 hours of daylight per day in May in Unawatuna12
12 hours of daylight per day in June in Unawatuna12
12 hours of daylight per day in July in Unawatuna12
12 hours of daylight per day in August in Unawatuna12
12 hours of daylight per day in September in Unawatuna12
12 hours of daylight per day in October in Unawatuna12
12 hours of daylight per day in November in Unawatuna12
12 hours of daylight per day in December in Unawatuna12
UV Index (Maximum)
UV (maximum) index 11+ (Extreme) in January in Unawatuna11
UV (maximum) index 11+ (Extreme) in February in Unawatuna11
UV (maximum) index 11+ (Extreme) in March in Unawatuna11
UV (maximum) index 11+ (Extreme) in April in Unawatuna11
UV (maximum) index 11+ (Extreme) in May in Unawatuna11
UV (maximum) index 11+ (Extreme) in June in Unawatuna11
UV (maximum) index 11+ (Extreme) in July in Unawatuna11
UV (maximum) index 11+ (Extreme) in August in Unawatuna11
UV (maximum) index 11+ (Extreme) in September in Unawatuna11
UV (maximum) index 11+ (Extreme) in October in Unawatuna11
UV (maximum) index 11 (Extreme) in November in Unawatuna11
UV (maximum) index 11 (Extreme) in December in Unawatuna11

Rainfall in Unawatuna

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
5 days with some rainfall in January in Unawatuna5
5 days with some rainfall in February in Unawatuna5
7 days with some rainfall in March in Unawatuna7
11 days with some rainfall in April in Unawatuna11
12 days with some rainfall in May in Unawatuna12
12 days with some rainfall in June in Unawatuna12
10 days with some rainfall in July in Unawatuna10
10 days with some rainfall in August in Unawatuna10
12 days with some rainfall in September in Unawatuna12
14 days with some rainfall in October in Unawatuna14
14 days with some rainfall in November in Unawatuna14
10 days with some rainfall in December in Unawatuna10
Average monthly rainfall (mm)
94 mm monthly rainfall in January in Unawatuna94
101 mm monthly rainfall in February in Unawatuna101
122 mm monthly rainfall in March in Unawatuna122
234 mm monthly rainfall in April in Unawatuna234
304 mm monthly rainfall in May in Unawatuna304
207 mm monthly rainfall in June in Unawatuna207
202 mm monthly rainfall in July in Unawatuna202
173 mm monthly rainfall in August in Unawatuna173
249 mm monthly rainfall in September in Unawatuna249
340 mm monthly rainfall in October in Unawatuna340
296 mm monthly rainfall in November in Unawatuna296
181 mm monthly rainfall in December in Unawatuna181

More about Unawatuna

Unawatuna by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Sri Lanka (Unawatuna) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Unawatuna?

Unawatuna has a hot tropical climate with no dry season.

Unawatuna weather in January

Expect daytime maximum temperatures of 29°C in Unawatuna, Sri Lanka in January and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 94 mm of rainfall in the month.

  • 29°C maximum daytime temperature in January in Unawatuna29
    29°C max day temperature
  • 7 hours of sunshine per day
  • 5 days with some rainfall in January in Unawatuna5
    5 days with some rainfall
  • 22°C minimum night-time temperature in January in Unawatuna22
    22°C min night temperature
  • 12 hours of daylight per day in January in Unawatuna12
    12 hours of daylight per day
  • High heat & humidity in January in UnawatunaH
    High heat & humidity
  • 94 mm monthly rainfall in January in Unawatuna94
    94 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in Unawatuna11
    11+ (Extreme) UV index
  • 28°C sea temperature in January in Unawatuna28
    28°C sea temperature

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Unawatuna weather in February

Expect daytime maximum temperatures of 30°C in Unawatuna, Sri Lanka in February and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 101 mm of rainfall in the month.

  • 30°C maximum daytime temperature in February in Unawatuna30
    30°C max day temperature
  • 8 hours of sunshine per day
  • 5 days with some rainfall in February in Unawatuna5
    5 days with some rainfall
  • 22°C minimum night-time temperature in February in Unawatuna22
    22°C min night temperature
  • 12 hours of daylight per day in February in Unawatuna12
    12 hours of daylight per day
  • High heat & humidity in February in UnawatunaH
    High heat & humidity
  • 101 mm monthly rainfall in February in Unawatuna101
    101 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in February in Unawatuna11
    11+ (Extreme) UV index
  • 28°C sea temperature in February in Unawatuna28
    28°C sea temperature

Back to months

Unawatuna weather in March

Expect daytime maximum temperatures of 31°C in Unawatuna, Sri Lanka in March and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 122 mm of rainfall in the month.

  • 31°C maximum daytime temperature in March in Unawatuna31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 7 days with some rainfall in March in Unawatuna7
    7 days with some rainfall
  • 23°C minimum night-time temperature in March in Unawatuna23
    23°C min night temperature
  • 12 hours of daylight per day in March in Unawatuna12
    12 hours of daylight per day
  • High heat & humidity in March in UnawatunaH
    High heat & humidity
  • 122 mm monthly rainfall in March in Unawatuna122
    122 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in March in Unawatuna11
    11+ (Extreme) UV index
  • 29°C sea temperature in March in Unawatuna29
    29°C sea temperature

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Unawatuna weather in April

Expect daytime maximum temperatures of 31°C in Unawatuna, Sri Lanka in April and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 11 days with some rainfall and typically 234 mm of rainfall in the month.

  • 31°C maximum daytime temperature in April in Unawatuna31
    31°C max day temperature
  • 7 hours of sunshine per day
  • 11 days with some rainfall in April in Unawatuna11
    11 days with some rainfall
  • 24°C minimum night-time temperature in April in Unawatuna24
    24°C min night temperature
  • 12 hours of daylight per day in April in Unawatuna12
    12 hours of daylight per day
  • High heat & humidity in April in UnawatunaH
    High heat & humidity
  • 234 mm monthly rainfall in April in Unawatuna234
    234 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in April in Unawatuna11
    11+ (Extreme) UV index
  • 29°C sea temperature in April in Unawatuna29
    29°C sea temperature

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Unawatuna weather in May

Expect daytime maximum temperatures of 30°C in Unawatuna, Sri Lanka in May and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 12 days with some rainfall and typically 304 mm of rainfall in the month.

  • 30°C maximum daytime temperature in May in Unawatuna30
    30°C max day temperature
  • 6 hours of sunshine per day
  • 12 days with some rainfall in May in Unawatuna12
    12 days with some rainfall
  • 25°C minimum night-time temperature in May in Unawatuna25
    25°C min night temperature
  • 12 hours of daylight per day in May in Unawatuna12
    12 hours of daylight per day
  • High heat & humidity in May in UnawatunaH
    High heat & humidity
  • 304 mm monthly rainfall in May in Unawatuna304
    304 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Unawatuna11
    11+ (Extreme) UV index
  • 29°C sea temperature in May in Unawatuna29
    29°C sea temperature

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Unawatuna weather in June

Expect daytime maximum temperatures of 29°C in Unawatuna, Sri Lanka in June and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 12 days with some rainfall and typically 207 mm of rainfall in the month.

  • 29°C maximum daytime temperature in June in Unawatuna29
    29°C max day temperature
  • 6 hours of sunshine per day
  • 12 days with some rainfall in June in Unawatuna12
    12 days with some rainfall
  • 24°C minimum night-time temperature in June in Unawatuna24
    24°C min night temperature
  • 12 hours of daylight per day in June in Unawatuna12
    12 hours of daylight per day
  • High heat & humidity in June in UnawatunaH
    High heat & humidity
  • 207 mm monthly rainfall in June in Unawatuna207
    207 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in June in Unawatuna11
    11+ (Extreme) UV index
  • 28°C sea temperature in June in Unawatuna28
    28°C sea temperature

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Unawatuna weather in July

Expect daytime maximum temperatures of 29°C in Unawatuna, Sri Lanka in July and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 10 days with some rainfall and typically 202 mm of rainfall in the month.

  • 29°C maximum daytime temperature in July in Unawatuna29
    29°C max day temperature
  • 6 hours of sunshine per day
  • 10 days with some rainfall in July in Unawatuna10
    10 days with some rainfall
  • 24°C minimum night-time temperature in July in Unawatuna24
    24°C min night temperature
  • 12 hours of daylight per day in July in Unawatuna12
    12 hours of daylight per day
  • High heat & humidity in July in UnawatunaH
    High heat & humidity
  • 202 mm monthly rainfall in July in Unawatuna202
    202 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in July in Unawatuna11
    11+ (Extreme) UV index
  • 27°C sea temperature in July in Unawatuna27
    27°C sea temperature

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Unawatuna weather in August

Expect daytime maximum temperatures of 29°C in Unawatuna, Sri Lanka in August and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 10 days with some rainfall and typically 173 mm of rainfall in the month.

  • 29°C maximum daytime temperature in August in Unawatuna29
    29°C max day temperature
  • 6 hours of sunshine per day
  • 10 days with some rainfall in August in Unawatuna10
    10 days with some rainfall
  • 24°C minimum night-time temperature in August in Unawatuna24
    24°C min night temperature
  • 12 hours of daylight per day in August in Unawatuna12
    12 hours of daylight per day
  • High heat & humidity in August in UnawatunaH
    High heat & humidity
  • 173 mm monthly rainfall in August in Unawatuna173
    173 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Unawatuna11
    11+ (Extreme) UV index
  • 27°C sea temperature in August in Unawatuna27
    27°C sea temperature

Back to months

Unawatuna weather in September

Expect daytime maximum temperatures of 29°C in Unawatuna, Sri Lanka in September and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 12 days with some rainfall and typically 249 mm of rainfall in the month.

  • 29°C maximum daytime temperature in September in Unawatuna29
    29°C max day temperature
  • 6 hours of sunshine per day
  • 12 days with some rainfall in September in Unawatuna12
    12 days with some rainfall
  • 24°C minimum night-time temperature in September in Unawatuna24
    24°C min night temperature
  • 12 hours of daylight per day in September in Unawatuna12
    12 hours of daylight per day
  • High heat & humidity in September in UnawatunaH
    High heat & humidity
  • 249 mm monthly rainfall in September in Unawatuna249
    249 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Unawatuna11
    11+ (Extreme) UV index
  • 28°C sea temperature in September in Unawatuna28
    28°C sea temperature

Back to months

Unawatuna weather in October

Expect daytime maximum temperatures of 29°C in Unawatuna, Sri Lanka in October and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 14 days with some rainfall and typically 340 mm of rainfall in the month.

  • 29°C maximum daytime temperature in October in Unawatuna29
    29°C max day temperature
  • 6 hours of sunshine per day
  • 14 days with some rainfall in October in Unawatuna14
    14 days with some rainfall
  • 23°C minimum night-time temperature in October in Unawatuna23
    23°C min night temperature
  • 12 hours of daylight per day in October in Unawatuna12
    12 hours of daylight per day
  • High heat & humidity in October in UnawatunaH
    High heat & humidity
  • 340 mm monthly rainfall in October in Unawatuna340
    340 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in October in Unawatuna11
    11+ (Extreme) UV index
  • 28°C sea temperature in October in Unawatuna28
    28°C sea temperature

Back to months

Unawatuna weather in November

Expect daytime maximum temperatures of 29°C in Unawatuna, Sri Lanka in November and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 14 days with some rainfall and typically 296 mm of rainfall in the month.

  • 29°C maximum daytime temperature in November in Unawatuna29
    29°C max day temperature
  • 6 hours of sunshine per day
  • 14 days with some rainfall in November in Unawatuna14
    14 days with some rainfall
  • 22°C minimum night-time temperature in November in Unawatuna22
    22°C min night temperature
  • 12 hours of daylight per day in November in Unawatuna12
    12 hours of daylight per day
  • High heat & humidity in November in UnawatunaH
    High heat & humidity
  • 296 mm monthly rainfall in November in Unawatuna296
    296 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in November in Unawatuna11
    11 (Extreme) UV index
  • 28°C sea temperature in November in Unawatuna28
    28°C sea temperature

Back to months

Unawatuna weather in December

Expect daytime maximum temperatures of 29°C in Unawatuna, Sri Lanka in December and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 10 days with some rainfall and typically 181 mm of rainfall in the month.

  • 29°C maximum daytime temperature in December in Unawatuna29
    29°C max day temperature
  • 7 hours of sunshine per day
  • 10 days with some rainfall in December in Unawatuna10
    10 days with some rainfall
  • 22°C minimum night-time temperature in December in Unawatuna22
    22°C min night temperature
  • 12 hours of daylight per day in December in Unawatuna12
    12 hours of daylight per day
  • High heat & humidity in December in UnawatunaH
    High heat & humidity
  • 181 mm monthly rainfall in December in Unawatuna181
    181 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in December in Unawatuna11
    11 (Extreme) UV index
  • 28°C sea temperature in December in Unawatuna28
    28°C sea temperature

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More about Unawatuna

Unawatuna by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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  • Book online with TUI Black Friday discount code
  • Sign up to myTUI. Discount varies by spend. T&Cs apply
Go to TUI deal >>

Expires at 23:59 on Tuesday 2nd Dec 2025 · View all TUI offers

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The climate guide for Sri Lanka (Unawatuna) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Sri Lanka

Compare Unawatuna with the UK

Below the Unawatuna chart shows average maximum daytime temperature for Unawatuna, Sri Lanka and the UK (London).

Maximum daytime temperature (°C)

Unawatuna, Sri Lanka
UK (London)
29
7
30
7
31
10
31
13
30
17
29
20
29
22
29
22
29
19
29
15
29
10
29
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

Compare more Unawatuna weather >>

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