The climate in San Rafael during May can be summarized as mild and very dry.
May is in the fall / autumn in San Rafael and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 19°C (67°F), whilst at night 5°C (41°F) is normal.
Daytime temperature | 19.3°C 66.7°F |
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Nightly temperature | 5.1°C 41.2°F |
Average temperature | 12.2°C 54°F |
Daily sunshine | 6.5 hrs |
Avg rainfall | 9 mm 0.4 ins |
Rainy days | 2 days |
Sea temperature | 15.1°C 59.2°F |
Humidity | 65% |
Windspeed | 5kph 3 mph |
On average May is the 2nd driest month of the year in San Rafael with around 9mm 0.4 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 6.5 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 Rafael in May 2025.
Hottest month: | January | 31.1°C 88°F |
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Driest month: | June | 9mm 0.4ins |
Sunniest month: | February | 11.3hrs |
Coldest month: | July | 15.2°C 59.4°F |
Wettest month: | January | 49mm 1.9ins |