Costa Rica Weather in May
What's the weather like in Costa Rica (Estado de Mato Grosso do Sul) in May 2025?
The climate in Costa Rica during May can be summarized as warm, humid and wet.
May is in the fall / autumn in Costa Rica and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a muggy 26°C (79°F), whilst at night 15°C (58°F) is normal.
| Daytime temperature | 26.3°C 79.3°F |
|---|---|
| Nightly temperature | 14.6°C 58.2°F |
| Average temperature | 20.4°C 68.7°F |
| Daily sunshine | 6.4 hrs |
| Avg rainfall | 142 mm 5.6 ins |
| Rainy days | 7 days |
| Sea temperature | 21.8°C 71.2°F |
| Humidity | 80% |
| Windspeed | 7.6kph 5 mph |
On average May is the 5th wettest month of the year in Costa Rica with around 142mm 5.6 inches of rain making it a wet time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.4 hours of sunshine per day.
May temperatures in Costa Rica
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 Costa Rica in May 2025.
Other monthly averages
Costa Rica weather stats
| Hottest month: | February | 31°C 87.8°F |
|---|---|---|
| Driest month: | July | 61mm 2.4ins |
| Sunniest month: | April | 7.2hrs |
| Coldest month: | June | 23.1°C 73.6°F |
| Wettest month: | December | 198mm 7.8ins |
© Google