Olhao weather by month

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

Temperature in Olhao (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
15°C maximum daytime temperature in January in Olhao15
16°C maximum daytime temperature in February in Olhao16
18°C maximum daytime temperature in March in Olhao18
19°C maximum daytime temperature in April in Olhao19
22°C maximum daytime temperature in May in Olhao22
25°C maximum daytime temperature in June in Olhao25
28°C maximum daytime temperature in July in Olhao28
29°C maximum daytime temperature in August in Olhao29
27°C maximum daytime temperature in September in Olhao27
23°C maximum daytime temperature in October in Olhao23
19°C maximum daytime temperature in November in Olhao19
16°C maximum daytime temperature in December in Olhao16
Min temperature (night-time)
7°C minimum night-time temperature in January in Olhao7
8°C minimum night-time temperature in February in Olhao8
9°C minimum night-time temperature in March in Olhao9
10°C minimum night-time temperature in April in Olhao10
12°C minimum night-time temperature in May in Olhao12
15°C minimum night-time temperature in June in Olhao15
18°C minimum night-time temperature in July in Olhao18
17°C minimum night-time temperature in August in Olhao17
17°C minimum night-time temperature in September in Olhao17
14°C minimum night-time temperature in October in Olhao14
10°C minimum night-time temperature in November in Olhao10
8°C minimum night-time temperature in December in Olhao8
Heat & Humidity
No heat & humidity in January in Olhao0
No heat & humidity in February in Olhao0
No heat & humidity in March in Olhao0
No heat & humidity in April in Olhao0
No heat & humidity in May in Olhao0
Low heat & humidity in June in OlhaoL
Moderate heat & humidity in July in OlhaoM
Moderate heat & humidity in August in OlhaoM
Low heat & humidity in September in OlhaoL
No heat & humidity in October in Olhao0
No heat & humidity in November in Olhao0
No heat & humidity in December in Olhao0
Sea temperature
16°C sea temperature in January in Olhao16
15°C sea temperature in February in Olhao15
16°C sea temperature in March in Olhao16
16°C sea temperature in April in Olhao16
17°C sea temperature in May in Olhao17
19°C sea temperature in June in Olhao19
21°C sea temperature in July in Olhao21
21°C sea temperature in August in Olhao21
21°C sea temperature in September in Olhao21
20°C sea temperature in October in Olhao20
19°C sea temperature in November in Olhao19
17°C sea temperature in December in Olhao17

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

Sunshine & UV index in Olhao

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in Olhao10
11 hours of daylight per day in February in Olhao11
12 hours of daylight per day in March in Olhao12
13 hours of daylight per day in April in Olhao13
14 hours of daylight per day in May in Olhao14
15 hours of daylight per day in June in Olhao15
14 hours of daylight per day in July in Olhao14
14 hours of daylight per day in August in Olhao14
12 hours of daylight per day in September in Olhao12
11 hours of daylight per day in October in Olhao11
10 hours of daylight per day in November in Olhao10
10 hours of daylight per day in December in Olhao10
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Olhao2
UV (maximum) index 3 (Moderate) in February in Olhao3
UV (maximum) index 5 (Moderate) in March in Olhao5
UV (maximum) index 7 (High) in April in Olhao7
UV (maximum) index 8 (Very High) in May in Olhao8
UV (maximum) index 9 (Very High) in June in Olhao9
UV (maximum) index 9 (Very High) in July in Olhao9
UV (maximum) index 9 (Very High) in August in Olhao9
UV (maximum) index 7 (High) in September in Olhao7
UV (maximum) index 5 (Moderate) in October in Olhao5
UV (maximum) index 3 (Moderate) in November in Olhao3
UV (maximum) index 2 (Low) in December in Olhao2

Rainfall in Olhao

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
9 days with some rainfall in January in Olhao9
11 days with some rainfall in February in Olhao11
8 days with some rainfall in March in Olhao8
9 days with some rainfall in April in Olhao9
5 days with some rainfall in May in Olhao5
3 days with some rainfall in June in Olhao3
1 day with some rainfall in July in Olhao1
1 day with some rainfall in August in Olhao1
2 days with some rainfall in September in Olhao2
8 days with some rainfall in October in Olhao8
10 days with some rainfall in November in Olhao10
12 days with some rainfall in December in Olhao12
Average monthly rainfall (mm)
97 mm monthly rainfall in January in Olhao97
68 mm monthly rainfall in February in Olhao68
54 mm monthly rainfall in March in Olhao54
41 mm monthly rainfall in April in Olhao41
30 mm monthly rainfall in May in Olhao30
17 mm monthly rainfall in June in Olhao17
2 mm monthly rainfall in July in Olhao2
3 mm monthly rainfall in August in Olhao3
16 mm monthly rainfall in September in Olhao16
54 mm monthly rainfall in October in Olhao54
83 mm monthly rainfall in November in Olhao83
100 mm monthly rainfall in December in Olhao100

More about the Olhao

Olhao by month

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

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The climate guide for Algarve (Olhao) 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 Olhao?

Olhao has a temperate climate with hot dry summers.

Olhao weather in January

Expect daytime maximum temperatures of 15°C in Olhao, Algarve in January based on long-term weather averages. There are 5 hours of sunshine per day on average with typically 97 mm of rainfall in the month.

  • 15°C maximum daytime temperature in January in Olhao15
    15°C max day temperature
  • 5 hours of sunshine per day
  • 9 days with some rainfall in January in Olhao9
    9 days with some rainfall
  • 7°C minimum night-time temperature in January in Olhao7
    7°C min night temperature
  • 10 hours of daylight per day in January in Olhao10
    10 hours of daylight per day
  • No heat & humidity in January in Olhao0
    No heat & humidity
  • 97 mm monthly rainfall in January in Olhao97
    97 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in January in Olhao2
    2 (Low) UV index
  • 16°C sea temperature in January in Olhao16
    16°C sea temperature

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Olhao weather in February

Expect daytime maximum temperatures of 16°C in Olhao, Algarve in February based on long-term weather averages. There are 6 hours of sunshine per day on average with 11 days with some rainfall and typically 68 mm of rainfall in the month.

  • 16°C maximum daytime temperature in February in Olhao16
    16°C max day temperature
  • 6 hours of sunshine per day
  • 11 days with some rainfall in February in Olhao11
    11 days with some rainfall
  • 8°C minimum night-time temperature in February in Olhao8
    8°C min night temperature
  • 11 hours of daylight per day in February in Olhao11
    11 hours of daylight per day
  • No heat & humidity in February in Olhao0
    No heat & humidity
  • 68 mm monthly rainfall in February in Olhao68
    68 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in February in Olhao3
    3 (Moderate) UV index
  • 15°C sea temperature in February in Olhao15
    15°C sea temperature

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Olhao weather in March

Expect daytime maximum temperatures of 18°C in Olhao, Algarve in March based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 54 mm of rainfall in the month.

  • 18°C maximum daytime temperature in March in Olhao18
    18°C max day temperature
  • 7 hours of sunshine per day
  • 8 days with some rainfall in March in Olhao8
    8 days with some rainfall
  • 9°C minimum night-time temperature in March in Olhao9
    9°C min night temperature
  • 12 hours of daylight per day in March in Olhao12
    12 hours of daylight per day
  • No heat & humidity in March in Olhao0
    No heat & humidity
  • 54 mm monthly rainfall in March in Olhao54
    54 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in March in Olhao5
    5 (Moderate) UV index
  • 16°C sea temperature in March in Olhao16
    16°C sea temperature

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Olhao weather in April

Expect daytime maximum temperatures of 19°C in Olhao, Algarve in April based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 41 mm of rainfall in the month.

  • 19°C maximum daytime temperature in April in Olhao19
    19°C max day temperature
  • 8 hours of sunshine per day
  • 9 days with some rainfall in April in Olhao9
    9 days with some rainfall
  • 10°C minimum night-time temperature in April in Olhao10
    10°C min night temperature
  • 13 hours of daylight per day in April in Olhao13
    13 hours of daylight per day
  • No heat & humidity in April in Olhao0
    No heat & humidity
  • 41 mm monthly rainfall in April in Olhao41
    41 mm of monthly rainfall
  • UV (maximum) index 7 (High) in April in Olhao7
    7 (High) UV index
  • 16°C sea temperature in April in Olhao16
    16°C sea temperature

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Olhao weather in May

Expect daytime maximum temperatures of 22°C in Olhao, Algarve in May based on long-term weather averages. There are 10 hours of sunshine per day on average.

  • 22°C maximum daytime temperature in May in Olhao22
    22°C max day temperature
  • 10 hours of sunshine per day
  • 5 days with some rainfall in May in Olhao5
    5 days with some rainfall
  • 12°C minimum night-time temperature in May in Olhao12
    12°C min night temperature
  • 14 hours of daylight per day in May in Olhao14
    14 hours of daylight per day
  • No heat & humidity in May in Olhao0
    No heat & humidity
  • 30 mm monthly rainfall in May in Olhao30
    30 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Olhao8
    8 (Very High) UV index
  • 17°C sea temperature in May in Olhao17
    17°C sea temperature

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Olhao weather in June

Expect daytime maximum temperatures of 25°C in Olhao, Algarve in June based on long-term weather averages. There are 11 hours of sunshine per day on average.

  • 25°C maximum daytime temperature in June in Olhao25
    25°C max day temperature
  • 11 hours of sunshine per day
  • 3 days with some rainfall in June in Olhao3
    3 days with some rainfall
  • 15°C minimum night-time temperature in June in Olhao15
    15°C min night temperature
  • 15 hours of daylight per day in June in Olhao15
    15 hours of daylight per day
  • Low heat & humidity in June in OlhaoL
    Low heat & humidity
  • 17 mm monthly rainfall in June in Olhao17
    17 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in June in Olhao9
    9 (Very High) UV index
  • 19°C sea temperature in June in Olhao19
    19°C sea temperature

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Olhao weather in July

Expect daytime maximum temperatures of 28°C in Olhao, Algarve in July based on long-term weather averages. There are 12 hours of sunshine per day on average.

  • 28°C maximum daytime temperature in July in Olhao28
    28°C max day temperature
  • 12 hours of sunshine per day
  • 1 day with some rainfall in July in Olhao1
    1 day with some rainfall
  • 18°C minimum night-time temperature in July in Olhao18
    18°C min night temperature
  • 14 hours of daylight per day in July in Olhao14
    14 hours of daylight per day
  • Moderate heat & humidity in July in OlhaoM
    Moderate heat & humidity
  • 2 mm monthly rainfall in July in Olhao2
    2 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in July in Olhao9
    9 (Very High) UV index
  • 21°C sea temperature in July in Olhao21
    21°C sea temperature

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Olhao weather in August

Expect daytime maximum temperatures of 29°C in Olhao, Algarve in August based on long-term weather averages. There are 11 hours of sunshine per day on average.

  • 29°C maximum daytime temperature in August in Olhao29
    29°C max day temperature
  • 11 hours of sunshine per day
  • 1 day with some rainfall in August in Olhao1
    1 day with some rainfall
  • 17°C minimum night-time temperature in August in Olhao17
    17°C min night temperature
  • 14 hours of daylight per day in August in Olhao14
    14 hours of daylight per day
  • Moderate heat & humidity in August in OlhaoM
    Moderate heat & humidity
  • 3 mm monthly rainfall in August in Olhao3
    3 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Olhao9
    9 (Very High) UV index
  • 21°C sea temperature in August in Olhao21
    21°C sea temperature

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Olhao weather in September

Expect daytime maximum temperatures of 27°C in Olhao, Algarve in September based on long-term weather averages. There are 9 hours of sunshine per day on average.

  • 27°C maximum daytime temperature in September in Olhao27
    27°C max day temperature
  • 9 hours of sunshine per day
  • 2 days with some rainfall in September in Olhao2
    2 days with some rainfall
  • 17°C minimum night-time temperature in September in Olhao17
    17°C min night temperature
  • 12 hours of daylight per day in September in Olhao12
    12 hours of daylight per day
  • Low heat & humidity in September in OlhaoL
    Low heat & humidity
  • 16 mm monthly rainfall in September in Olhao16
    16 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Olhao7
    7 (High) UV index
  • 21°C sea temperature in September in Olhao21
    21°C sea temperature

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Olhao weather in October

Expect daytime maximum temperatures of 23°C in Olhao, Algarve in October based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 54 mm of rainfall in the month.

  • 23°C maximum daytime temperature in October in Olhao23
    23°C max day temperature
  • 7 hours of sunshine per day
  • 8 days with some rainfall in October in Olhao8
    8 days with some rainfall
  • 14°C minimum night-time temperature in October in Olhao14
    14°C min night temperature
  • 11 hours of daylight per day in October in Olhao11
    11 hours of daylight per day
  • No heat & humidity in October in Olhao0
    No heat & humidity
  • 54 mm monthly rainfall in October in Olhao54
    54 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in October in Olhao5
    5 (Moderate) UV index
  • 20°C sea temperature in October in Olhao20
    20°C sea temperature

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Olhao weather in November

Expect daytime maximum temperatures of 19°C in Olhao, Algarve in November based on long-term weather averages. There are 6 hours of sunshine per day on average with 10 days with some rainfall and typically 83 mm of rainfall in the month.

  • 19°C maximum daytime temperature in November in Olhao19
    19°C max day temperature
  • 6 hours of sunshine per day
  • 10 days with some rainfall in November in Olhao10
    10 days with some rainfall
  • 10°C minimum night-time temperature in November in Olhao10
    10°C min night temperature
  • 10 hours of daylight per day in November in Olhao10
    10 hours of daylight per day
  • No heat & humidity in November in Olhao0
    No heat & humidity
  • 83 mm monthly rainfall in November in Olhao83
    83 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in November in Olhao3
    3 (Moderate) UV index
  • 19°C sea temperature in November in Olhao19
    19°C sea temperature

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Olhao weather in December

Expect daytime maximum temperatures of 16°C in Olhao, Algarve in December based on long-term weather averages. There are 5 hours of sunshine per day on average with 12 days with some rainfall and typically 100 mm of rainfall in the month.

  • 16°C maximum daytime temperature in December in Olhao16
    16°C max day temperature
  • 5 hours of sunshine per day
  • 12 days with some rainfall in December in Olhao12
    12 days with some rainfall
  • 8°C minimum night-time temperature in December in Olhao8
    8°C min night temperature
  • 10 hours of daylight per day in December in Olhao10
    10 hours of daylight per day
  • No heat & humidity in December in Olhao0
    No heat & humidity
  • 100 mm monthly rainfall in December in Olhao100
    100 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Olhao2
    2 (Low) UV index
  • 17°C sea temperature in December in Olhao17
    17°C sea temperature

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More about the Olhao

Olhao by month

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

Recommended for the Algarve

  • Explore latest special offers & online deals from TUI
  • Free child places & £0 deposits with direct debit available
  • Book summer & winter sun holidays in 2026/2027

TUITUI deal finder

The climate guide for Algarve (Olhao) 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.

Compare Olhao weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Olhao, Algarve, Portugal and the UK (London).

Maximum daytime temperature (°C)

Olhao, Algarve, Portugal
UK (London)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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