The climate in San José during May can be summarized as warm and wet.
May is in the fall / autumn in San José and is typically the 4th coldest month of the year. Daytime maximum temperatures average around 23°C (74°F), whilst at night 13°C (55°F) is normal.
Daytime temperature | 23.4°C 74.1°F |
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Nightly temperature | 13°C 55.4°F |
Average temperature | 18.2°C 64.8°F |
Daily sunshine | 6 hrs |
Avg rainfall | 157 mm 6.2 ins |
Rainy days | 8 days |
Sea temperature | 20.7°C 69.2°F |
Humidity | 80% |
Windspeed | 9.4kph 6 mph |
On average May is the 3rd wettest month of the year in San José with around 157mm 6.2 inches of rain making it a wet time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 hours of sunshine per day.
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 San José in May 2025.
Hottest month: | January | 31.8°C 89.2°F |
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Driest month: | July | 112mm 4.4ins |
Sunniest month: | December | 8.9hrs |
Coldest month: | June | 20.7°C 69.3°F |
Wettest month: | October | 183mm 7.2ins |