San Juan Weather in May
What's the weather like in San Juan (Alajuela) in May 2024?
The climate in San Juan during May can be summarized as warm, humid and very wet.
May is in the spring in San Juan and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (79°F), whilst at night 18°C (64°F) is normal.
| Daytime temperature | 26°C 78.8°F |
|---|---|
| Nightly temperature | 17.8°C 64°F |
| Average temperature | 21.9°C 71.4°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 391 mm 15.4 ins |
| Rainy days | 19 days |
| Sea temperature | 29°C 84.1°F |
| Humidity | 82% |
| Windspeed | 12.6kph 8 mph |
On average May is the 4th wettest month of the year in San Juan with around 391mm 15.4 inches of rain making it a very wet time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
May temperatures in San Juan
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 San Juan in May 2024.
Other monthly averages
San Juan weather stats
| Hottest month: | April | 26.4°C 79.5°F |
|---|---|---|
| Driest month: | February | 15mm 0.6ins |
| Sunniest month: | February | 7.7hrs |
| Coldest month: | January | 24.1°C 75.4°F |
| Wettest month: | September | 498mm 19.6ins |
© Google