San Martín Weather in May
What's the weather like in San Martín (Mendoza) in May 2026?
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 |
|---|---|
| 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.
May temperatures in San Martín
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 Martín in May 2025.
Other monthly averages
San Martín weather stats
| Hottest month: | January | 31.8°C 89.2°F |
|---|---|---|
| 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 |
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