Olhão Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Olhão.
Climate overview of Olhão
Temperatures in Olhão, Algarve, Portugal, shift moderately through the seasons. The warmest month is August at 27°C (81°F), and the coolest is January at 16°C (61°F).
With around 500 mm (20 in) of annual rainfall, the city has moderate precipitation levels. December is the wettest month and July the driest. It also has a distinct dry season from May to September. July is the sunniest month, averaging 12.0 hours of sunshine per day.
Olhão Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Olhão — and find the best time to visit.
Monthly Temperature in Olhão
In Olhão, seasonal changes bring about a moderate variation in temperatures. Typically, average maximum daytime temperatures range from a comfortable 27°C (81°F) in August to a moderate 16°C (61°F) in the coolest month, January.
Nights vary from 21°C (70°F) in August to around 11°C (52°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Olhão
Generally, Olhão receives mid-range precipitation levels, with 500 mm (20 in) annually. The climate in Olhão shows significant variation throughout the year. Expect moderate rainfall in December, the wettest month, with an average of 89 mm (3.5 in) of precipitation over 12 rainy days.
In contrast, the driest month July offers drier and sunnier days, with around 0.8 mm (0.03 in) of rainfall over a single rainy day. For more details, please visit our Olhão Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Olhão
For those who appreciate different seasons, Olhão serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 12.0 hours of sunshine daily, and embrace the darker days in December, offering only 5.3 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Water Temperature in Olhão
The mean water temperature over the year ranges from 15°C (59°F) in January to 20°C (68°F) in July.
Water temperature over the year
Humidity in Olhão by Month
The relative humidity is high throughout the year in Olhão.
The city experiences its highest humidity in January, reaching 77%. In July, the humidity drops to its lowest level at 60%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Olhão
The average wind speed over the year ranges from 3 m/s (6 knots) to 4 m/s (8 knots). It is lower in January, March, June, July, August, September, October, November and December and higher in February, April and May. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Olhão
Frequently asked questions about the climate in Olhão
What is the best time to visit Olhão?
May, June, July, August, September and October typically offer the most optimal weather in Olhão. In contrast, January, February and December tend to have less optimal conditions. Olhão has a distinct dry season from May to September.
What temperatures can I expect in Olhão?
Daytime highs range from 16°C (61°F) in January to 27°C (81°F) in August. Nighttime lows range from 11°C (52°F) to 21°C (70°F).
How much rain does Olhão get?
Annual rainfall is around 500 mm (20 in). December is the wettest month with 89 mm (3.5 in), while July is the driest with 0.8 mm (0.03 in).
How sunny is Olhão?
Olhão receives around 3,135 hours of sunshine per year. July is the sunniest month with 361 hours, while December is the cloudiest with just 158 hours. Overall, Olhão enjoys abundant sunshine.
Olhão 3-Day Forecast
Olhão 3-Day Forecast
Olhão on the map
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