The climate in San Martín during May can be summarized as mild and very dry.
May is in the fall / autumn in San Martín and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 20°C (67°F), whilst at night 6°C (42°F) is normal.
Daytime temperature | 19.5°C 67°F |
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Nightly temperature | 5.6°C 42°F |
Average temperature | 12.5°C 54.5°F |
Daily sunshine | 7.3 hrs |
Avg rainfall | 4 mm 0.2 ins |
Rainy days | 1 days |
Sea temperature | 15.5°C 59.8°F |
Humidity | 66% |
Windspeed | 5.4kph 3 mph |
On average May is the 2nd driest month of the year in San Martín with around 4mm 0.2 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 7.3 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 Martín in May 2025.
Hottest month: | January | 31.8°C 89.2°F |
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Driest month: | August | 3mm 0.1ins |
Sunniest month: | November | 11hrs |
Coldest month: | July | 15.1°C 59.2°F |
Wettest month: | February | 38mm 1.5ins |