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San Rafael, Mendoza Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in San Rafael, Mendoza?
San Rafael, Mendoza gets 432 mm of precipitation a year over about 44 rainy days. January is the warmest month (average high 33°C) and July the coldest (average low 1°C).
Semi-arid climate
San Rafael, Mendoza has hot summers and mild winters. Daytime highs range from about 17°C in July to 33°C in January. January is usually the wettest month. The most comfortable time to visit is typically April to October, when daytime highs sit near 21°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Jun–Aug | 1° | 18° |
| Spring | Sep–Nov | 8° | 26° |
| Summer | Dec–Feb | 15° | 32° |
| Autumn | Mar–May | 9° | 24° |
How much rain does San Rafael get?
San Rafael gets 432 mm of precipitation in an average year, spread over about 44 days with measurable rain. That is fewer rainy days than 65% of Argentina.
January is the wettest month, with 61 mm. July is the driest, with 10 mm. January has the most rainy days, about 6.
San Rafael weather by month
San Rafael weather in January
In January, San Rafael averages a high of 33°C and a low of 16°C. It gets 61 mm of precipitation over about 6 rainy days. Estimated sunshine is 72% of daylight hours, derived from ERA5 cloud cover. The January record high is 43°C (2010) and the record low is 4°C (1990).
San Rafael weather in February
In February, San Rafael averages a high of 32°C and a low of 14°C. It gets 47 mm of precipitation over about 5 rainy days. Estimated sunshine is 72% of daylight hours, derived from ERA5 cloud cover. The February record high is 41°C (2017) and the record low is 3°C (1992).
San Rafael weather in March
In March, San Rafael averages a high of 29°C and a low of 13°C. It gets 51 mm of precipitation over about 4 rainy days. Estimated sunshine is 73% of daylight hours, derived from ERA5 cloud cover. The March record high is 38°C (2023) and the record low is 0°C (2000).
San Rafael weather in April
In April, San Rafael averages a high of 24°C and a low of 8°C. It gets 34 mm of precipitation over about 4 rainy days. Estimated sunshine is 69% of daylight hours, derived from ERA5 cloud cover. The April record high is 36°C (2010) and the record low is -4°C (1989). April is one of the most comfortable months to visit.
San Rafael weather in May
In May, San Rafael averages a high of 20°C and a low of 5°C. It gets 26 mm of precipitation over about 3 rainy days. Estimated sunshine is 66% of daylight hours, derived from ERA5 cloud cover. The May record high is 31°C (2009) and the record low is -8°C (1984). May is one of the most comfortable months to visit.
San Rafael weather in June
In June, San Rafael averages a high of 17°C and a low of 2°C. It gets 12 mm of precipitation over about 2 rainy days. Estimated sunshine is 58% of daylight hours, derived from ERA5 cloud cover. The June record high is 28°C (2023) and the record low is -8°C (2025). June is one of the most comfortable months to visit.
San Rafael weather in July
In July, San Rafael averages a high of 17°C and a low of 1°C. It gets 10 mm of precipitation over about 2 rainy days. Estimated sunshine is 66% of daylight hours, derived from ERA5 cloud cover. The July record high is 28°C (2008) and the record low is -9°C (2000). July is one of the most comfortable months to visit.
San Rafael weather in August
In August, San Rafael averages a high of 19°C and a low of 2°C. It gets 26 mm of precipitation over about 3 rainy days. Estimated sunshine is 66% of daylight hours, derived from ERA5 cloud cover. The August record high is 33°C (2015) and the record low is -8°C (1991). August is one of the most comfortable months to visit.
San Rafael weather in September
In September, San Rafael averages a high of 22°C and a low of 5°C. It gets 43 mm of precipitation over about 3 rainy days. Estimated sunshine is 69% of daylight hours, derived from ERA5 cloud cover. The September record high is 34°C (2013) and the record low is -4°C (2019). September is one of the most comfortable months to visit.
San Rafael weather in October
In October, San Rafael averages a high of 25°C and a low of 8°C. It gets 36 mm of precipitation over about 4 rainy days. Estimated sunshine is 72% of daylight hours, derived from ERA5 cloud cover. The October record high is 37°C (2021) and the record low is -2°C (1981). October is one of the most comfortable months to visit.
San Rafael weather in November
In November, San Rafael averages a high of 29°C and a low of 11°C. It gets 41 mm of precipitation over about 4 rainy days. Estimated sunshine is 72% of daylight hours, derived from ERA5 cloud cover. The November record high is 40°C (1987) and the record low is -1°C (1992).
San Rafael weather in December
In December, San Rafael averages a high of 32°C and a low of 14°C. It gets 44 mm of precipitation over about 5 rainy days. Estimated sunshine is 74% of daylight hours, derived from ERA5 cloud cover. The December record high is 42°C (1995) and the record low is 3°C (2001).
Sunshine, humidity and wind in San Rafael
December is the sunniest month in San Rafael, with estimated sunshine of 74% of daylight hours from ERA5 cloud cover. June is the cloudiest, at 58%. The annual cloud-cover estimate is 69% of daylight hours; it is not a measurement of sunshine duration. San Rafael is sunnier than 91% of Argentina.
Humidity peaks in June at 59% and is lowest in October at 32%.
San Rafael has about 30 days a year above 32°C. San Rafael is hotter than 62% of Argentina.
First and last freeze in San Rafael
The first fall freeze in San Rafael typically comes around May 10, and the last spring freeze around September 17. That leaves a frost-free growing season of about 235 days.
San Rafael weather records
These records cover SAN RAFAEL during 1973–2025. Earlier records or other stations in the city may differ.
The hottest temperature on record at the San Rafael station is 43°C, on January 29, 2010. The coldest is -9°C, on July 13, 2000.
The wettest day in the available station history brought 232 mm of precipitation, on November 10, 2020.
35 all-time records have been set at the station since 1973.
The best time to visit San Rafael
The most comfortable time to visit is typically April to October, when daytime highs sit near 21°C.
Winter (June–August) is mild, with average highs around 18°C and lows near 1°C.
Spring (September–November) is warm, with average highs around 25°C and lows near 8°C.
Summer (December–February) is hot, with average highs around 32°C and lows near 15°C.
Autumn (March–May) is warm, with average highs around 24°C and lows near 9°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 16° | 33° | 61 mm | 6 | 40% | 72% | 43° | 4° |
| February | 14° | 32° | 47 mm | 5 | 44% | 72% | 41° | 3° |
| March | 13° | 29° | 51 mm | 4 | 48% | 73% | 38° | 0° |
| April | 8° | 24° | 34 mm | 4 | 55% | 69% | 36° | -4° |
| May | 5° | 20° | 26 mm | 3 | 58% | 66% | 31° | -8° |
| June | 2° | 17° | 12 mm | 2 | 59% | 58% | 28° | -8° |
| July | 1° | 17° | 10 mm | 2 | 52% | 66% | 28° | -9° |
| August | 2° | 19° | 26 mm | 3 | 42% | 66% | 33° | -8° |
| September | 5° | 22° | 43 mm | 3 | 33% | 69% | 34° | -4° |
| October | 8° | 25° | 36 mm | 4 | 32% | 72% | 37° | -2° |
| November | 11° | 29° | 41 mm | 4 | 33% | 72% | 40° | -1° |
| December | 14° | 32° | 44 mm | 5 | 34% | 74% | 42° | 3° |
Station: SAN RAFAEL, 7 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1973–2025; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
San Rafael climate questions
How much rain does San Rafael get?
San Rafael gets 432 mm of precipitation in an average year, over about 44 rainy days.
What is the wettest month in San Rafael?
January is the wettest month in San Rafael, with 61 mm. July is the driest, with 10 mm.
How many rainy days does San Rafael have a year?
San Rafael has about 44 days with measurable rain in an average year. January has the most, about 6.
What is the hottest month in San Rafael?
January is the warmest month in San Rafael, with an average high of 33°C.
What is the coldest month in San Rafael?
July is the coldest month in San Rafael, with an average low of 1°C.
What is the record high temperature in San Rafael?
Within the available 1973–2025 station history, the record high at the San Rafael station is 43°C, set on January 29, 2010. The record low is -9°C, on July 13, 2000.
What is the sunniest month in San Rafael?
December is the sunniest month in San Rafael, with estimated sunshine of 74% of daylight hours from ERA5 cloud cover. June is the cloudiest.
When is the first frost in San Rafael?
The first fall freeze in San Rafael typically comes around May 10. The last spring freeze is around September 17.
What is the best time to visit San Rafael?
The most comfortable time to visit is typically April to October, when daytime highs sit near 21°C.