San José de Mayo Weather in May
What's the weather like in San José de Mayo (San José) in May 2026?
The climate in San José de Mayo during May can be summarized as mild and a little damp.
May is in the fall / autumn in San José de Mayo and is typically the 5th coldest month of the year. Daytime maximum temperatures average around 19°C (65°F), whilst at night 10°C (50°F) is normal.
| Daytime temperature | 18.6°C 65.4°F |
|---|---|
| Nightly temperature | 9.9°C 49.7°F |
| Average temperature | 14.2°C 57.6°F |
| Daily sunshine | 5.9 hrs |
| Avg rainfall | 88 mm 3.5 ins |
| Rainy days | 8 days |
| Sea temperature | 16.2°C 61.2°F |
| Humidity | 79% |
| Windspeed | 14kph 9 mph |
On average May is the 6th wettest month of the year in San José de Mayo with around 88mm 3.5 inches of rain making it a a little damp 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 5.9 hours of sunshine per day.
May temperatures in San José de Mayo
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 José de Mayo in May 2025.
Other monthly averages
San José de Mayo weather stats
| Hottest month: | January | 28.7°C 83.7°F |
|---|---|---|
| Driest month: | August | 69mm 2.7ins |
| Sunniest month: | January | 9.8hrs |
| Coldest month: | July | 14.7°C 58.5°F |
| Wettest month: | February | 103mm 4.1ins |
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