The climate in San Ramón during May can be summarized as hot, humid and reasonably dry.
May is in the fall / autumn in San Ramón and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 21°C (70°F) is normal.
Daytime temperature | 31.5°C 88.7°F |
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Nightly temperature | 21.1°C 70°F |
Average temperature | 26.3°C 79.3°F |
Daily sunshine | 6.5 hrs |
Avg rainfall | 65 mm 2.6 ins |
Rainy days | 7 days |
Sea temperature | 21.8°C 71.2°F |
Humidity | 80% |
Windspeed | 9kph 6 mph |
On average May is the 5th driest month of the year in San Ramón with around 65mm 2.6 inches of rain making it a reasonably dry 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 6.5 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 Ramón in May 2025.
Hottest month: | October | 34°C 93.2°F |
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Driest month: | June | 21mm 0.8ins |
Sunniest month: | July | 7.9hrs |
Coldest month: | June | 29.6°C 85.3°F |
Wettest month: | January | 252mm 9.9ins |