Atenas Weather in May
What's the weather like in Atenas (Alajuela) in May 2025?
The climate in Atenas during May can be summarized as hot, humid and very wet.
May is in the spring in Atenas and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a steamy 29°C (85°F), whilst at night 22°C (71°F) is normal.
| Daytime temperature | 29.4°C 84.8°F |
|---|---|
| Nightly temperature | 21.7°C 71°F |
| Average temperature | 25.5°C 77.9°F |
| Daily sunshine | 6.8 hrs |
| Avg rainfall | 323 mm 12.7 ins |
| Rainy days | 18 days |
| Sea temperature | 29.3°C 84.7°F |
| Humidity | 83% |
| Windspeed | 10.4kph 7 mph |
On average May is the 4th wettest month of the year in Atenas with around 323mm 12.7 inches of rain making it a very wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.8 hours of sunshine per day.
May temperatures in Atenas
May rainfall
May 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 May 2025.
Other monthly averages
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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