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Mount Lavinia-Dehiwala weather by month
Check out Mount Lavinia-Dehiwala weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Mount Lavinia-Dehiwala (°F)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max temperature (daytime) | 88 |
88 |
90 |
90 |
88 |
86 |
86 |
86 |
86 |
86 |
86 |
86 |
| Min temperature (night-time) | 72 |
73 |
75 |
75 |
77 |
77 |
77 |
77 |
77 |
75 |
73 |
72 |
| Heat & Humidity | H |
H |
VH |
VH |
VH |
H |
H |
H |
H |
H |
H |
H |
| Sea temperature | 82 |
82 |
84 |
86 |
84 |
82 |
81 |
81 |
82 |
82 |
82 |
82 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & Daylight in Mount Lavinia-Dehiwala
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily hours of sunshine | ||||||||||||
| Daily hours of daylight | 12 |
12 |
12 |
12 |
12 |
13 |
12 |
12 |
12 |
12 |
12 |
12 |
| UV Index (Maximum) | 11 |
11 |
11 |
11 |
11 |
11 |
11 |
11 |
11 |
11 |
11 |
11 |
Rainfall in Mount Lavinia-Dehiwala
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of days with some rain | 5 |
5 |
9 |
14 |
14 |
15 |
11 |
11 |
14 |
16 |
15 |
10 |
| Average monthly rainfall (inches) | 2.2 |
2.9 |
5.4 |
9.8 |
15.0 |
7.3 |
4.9 |
4.6 |
9.3 |
14.6 |
12.0 |
6.5 |
More about Mount Lavinia-Dehiwala
Mount Lavinia-Dehiwala by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Sri Lanka
Expires at 23:59 on Tuesday 2nd Dec 2025 · View all TUI offers
The climate guide for Sri Lanka (Mount Lavinia-Dehiwala) 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 Mount Lavinia-Dehiwala?
Mount Lavinia-Dehiwala has a hot tropical climate with no dry season.
Mount Lavinia-Dehiwala weather in January
Expect daytime maximum temperatures of 88°F in Mount Lavinia-Dehiwala, Sri Lanka in January and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 2.2 inches of rainfall in the month.
- 88°F max day temperature
88 - 8 hours of sunshine per day
- 5 days with some rainfall
5 - 72°F min night temperature
72 - 12 hours of daylight per day
12 - High heat & humidity
H - 2.2 inches of monthly rainfall
2.2 - 11 (Extreme) UV index
11 - 82°F sea temperature
82
Mount Lavinia-Dehiwala weather in February
Expect daytime maximum temperatures of 88°F in Mount Lavinia-Dehiwala, Sri Lanka in February and high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 2.9 inches of rainfall in the month.
- 88°F max day temperature
88 - 9 hours of sunshine per day
- 5 days with some rainfall
5 - 73°F min night temperature
73 - 12 hours of daylight per day
12 - High heat & humidity
H - 2.9 inches of monthly rainfall
2.9 - 11+ (Extreme) UV index
11 - 82°F sea temperature
82
Mount Lavinia-Dehiwala weather in March
Expect daytime maximum temperatures of 90°F in Mount Lavinia-Dehiwala, Sri Lanka in March and very high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 5.4 inches of rainfall in the month.
- 90°F max day temperature
90 - 9 hours of sunshine per day
- 9 days with some rainfall
9 - 75°F min night temperature
75 - 12 hours of daylight per day
12 - Very High heat & humidity
VH - 5.4 inches of monthly rainfall
5.4 - 11+ (Extreme) UV index
11 - 84°F sea temperature
84
Mount Lavinia-Dehiwala weather in April
Expect daytime maximum temperatures of 90°F in Mount Lavinia-Dehiwala, Sri Lanka in April and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 14 days with some rainfall and typically 9.8 inches of rainfall in the month.
- 90°F max day temperature
90 - 8 hours of sunshine per day
- 14 days with some rainfall
14 - 75°F min night temperature
75 - 12 hours of daylight per day
12 - Very High heat & humidity
VH - 9.8 inches of monthly rainfall
9.8 - 11+ (Extreme) UV index
11 - 86°F sea temperature
86
Mount Lavinia-Dehiwala weather in May
Expect daytime maximum temperatures of 88°F in Mount Lavinia-Dehiwala, Sri Lanka in May and very 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 15.0 inches of rainfall in the month.
- 88°F max day temperature
88 - 6 hours of sunshine per day
- 14 days with some rainfall
14 - 77°F min night temperature
77 - 12 hours of daylight per day
12 - Very High heat & humidity
VH - 15.0 inches of monthly rainfall
15.0 - 11+ (Extreme) UV index
11 - 84°F sea temperature
84
Mount Lavinia-Dehiwala weather in June
Expect daytime maximum temperatures of 86°F in Mount Lavinia-Dehiwala, 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 15 days with some rainfall and typically 7.3 inches of rainfall in the month.
- 86°F max day temperature
86 - 6 hours of sunshine per day
- 15 days with some rainfall
15 - 77°F min night temperature
77 - 13 hours of daylight per day
13 - High heat & humidity
H - 7.3 inches of monthly rainfall
7.3 - 11+ (Extreme) UV index
11 - 82°F sea temperature
82
Mount Lavinia-Dehiwala weather in July
Expect daytime maximum temperatures of 86°F in Mount Lavinia-Dehiwala, 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 11 days with some rainfall and typically 4.9 inches of rainfall in the month.
- 86°F max day temperature
86 - 6 hours of sunshine per day
- 11 days with some rainfall
11 - 77°F min night temperature
77 - 12 hours of daylight per day
12 - High heat & humidity
H - 4.9 inches of monthly rainfall
4.9 - 11+ (Extreme) UV index
11 - 81°F sea temperature
81
Mount Lavinia-Dehiwala weather in August
Expect daytime maximum temperatures of 86°F in Mount Lavinia-Dehiwala, 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 11 days with some rainfall and typically 4.6 inches of rainfall in the month.
- 86°F max day temperature
86 - 6 hours of sunshine per day
- 11 days with some rainfall
11 - 77°F min night temperature
77 - 12 hours of daylight per day
12 - High heat & humidity
H - 4.6 inches of monthly rainfall
4.6 - 11+ (Extreme) UV index
11 - 81°F sea temperature
81
Mount Lavinia-Dehiwala weather in September
Expect daytime maximum temperatures of 86°F in Mount Lavinia-Dehiwala, 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 14 days with some rainfall and typically 9.3 inches of rainfall in the month.
- 86°F max day temperature
86 - 6 hours of sunshine per day
- 14 days with some rainfall
14 - 77°F min night temperature
77 - 12 hours of daylight per day
12 - High heat & humidity
H - 9.3 inches of monthly rainfall
9.3 - 11+ (Extreme) UV index
11 - 82°F sea temperature
82
Mount Lavinia-Dehiwala weather in October
Expect daytime maximum temperatures of 86°F in Mount Lavinia-Dehiwala, 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 16 days with some rainfall and typically 14.6 inches of rainfall in the month.
- 86°F max day temperature
86 - 6 hours of sunshine per day
- 16 days with some rainfall
16 - 75°F min night temperature
75 - 12 hours of daylight per day
12 - High heat & humidity
H - 14.6 inches of monthly rainfall
14.6 - 11+ (Extreme) UV index
11 - 82°F sea temperature
82
Mount Lavinia-Dehiwala weather in November
Expect daytime maximum temperatures of 86°F in Mount Lavinia-Dehiwala, Sri Lanka in November and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 15 days with some rainfall and typically 12.0 inches of rainfall in the month.
- 86°F max day temperature
86 - 7 hours of sunshine per day
- 15 days with some rainfall
15 - 73°F min night temperature
73 - 12 hours of daylight per day
12 - High heat & humidity
H - 12.0 inches of monthly rainfall
12.0 - 11 (Extreme) UV index
11 - 82°F sea temperature
82
Mount Lavinia-Dehiwala weather in December
Expect daytime maximum temperatures of 86°F in Mount Lavinia-Dehiwala, 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 6.5 inches of rainfall in the month.
- 86°F max day temperature
86 - 7 hours of sunshine per day
- 10 days with some rainfall
10 - 72°F min night temperature
72 - 12 hours of daylight per day
12 - High heat & humidity
H - 6.5 inches of monthly rainfall
6.5 - 11 (Extreme) UV index
11 - 82°F sea temperature
82
More about Mount Lavinia-Dehiwala
Mount Lavinia-Dehiwala by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Sri Lanka
- Save up to £300 on holidays (Jan 2026-Nov 2027)
- Book online with TUI Black Friday discount code
- Sign up to myTUI. Discount varies by spend. T&Cs apply
Expires at 23:59 on Tuesday 2nd Dec 2025 · View all TUI offers
The climate guide for Sri Lanka (Mount Lavinia-Dehiwala) 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) | Imperial (°F)
More about Sri Lanka
Compare Mount Lavinia-Dehiwala with the UK
Below the Mount Lavinia-Dehiwala chart shows average maximum daytime temperature for Mount Lavinia-Dehiwala, Sri Lanka and the UK (London).
Maximum daytime temperature (°F)
Metric (°C) | Imperial (°F)
Compare more Mount Lavinia-Dehiwala weather >>
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