Atenas Weather in August
What's the weather like in Atenas (Alajuela) in August 2025?
The climate in Atenas during August can be summarized as hot, humid and very wet.
August is in the summer in Atenas and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (83°F), whilst at night 21°C (70°F) is normal.
| Daytime temperature | 28.3°C 82.9°F |
|---|---|
| Nightly temperature | 21.1°C 70°F |
| Average temperature | 24.7°C 76.5°F |
| Daily sunshine | 6.2 hrs |
| Avg rainfall | 331 mm 13 ins |
| Rainy days | 23 days |
| Sea temperature | 28.7°C 83.7°F |
| Humidity | 86% |
| Windspeed | 10.1kph 6 mph |
On average August is the 3rd wettest month of the year in Atenas with around 331mm 13 inches of rain making it a very wet time to visit. This rainfall is typically spread over 23 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.2 hours of sunshine per day.
August temperatures in Atenas
August rainfall
August hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Atenas in August 2025.
Other monthly averages
Best places to visit in August
Atenas weather stats
| Hottest month: | April | 30.4°C 86.7°F |
|---|---|---|
| Driest month: | January | 0mm 0ins |
| Sunniest month: | February | 8.4hrs |
| Coldest month: | October | 27.5°C 81.5°F |
| Wettest month: | September | 402mm 15.8ins |
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