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Santa Rosa, La Pampa Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Santa Rosa, La Pampa?
Santa Rosa, La Pampa gets 657 mm of precipitation a year over about 59 rainy days. January is the warmest month (average high 32°C) and July the coldest (average low 2°C).
Humid subtropical climate
Santa Rosa, La Pampa has hot summers and mild winters. Daytime highs range from about 15°C in July to 32°C in January. January is usually the wettest month. The most comfortable time to visit is typically April to May and August to October, when daytime highs sit near 21°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Jun–Aug | 2° | 16° |
| Spring | Sep–Nov | 9° | 24° |
| Summer | Dec–Feb | 16° | 31° |
| Autumn | Mar–May | 9° | 23° |
How much rain does Santa Rosa get?
Santa Rosa gets 657 mm of precipitation in an average year, spread over about 59 days with measurable rain. That is more rainy days than 54% of Argentina.
January is the wettest month, with 87 mm. July is the driest, with 16 mm. January has the most rainy days, about 7.
Santa Rosa weather by month
Santa Rosa weather in January
In January, Santa Rosa averages a high of 32°C and a low of 17°C. It gets 87 mm of precipitation over about 7 rainy days. Estimated sunshine is 69% of daylight hours, derived from ERA5 cloud cover. The January record high is 45°C (2014) and the record low is 3°C (1988).
Santa Rosa weather in February
In February, Santa Rosa averages a high of 31°C and a low of 15°C. It gets 69 mm of precipitation over about 6 rainy days. Estimated sunshine is 71% of daylight hours, derived from ERA5 cloud cover. The February record high is 42°C (2024) and the record low is 3°C (1983).
Santa Rosa weather in March
In March, Santa Rosa averages a high of 28°C and a low of 13°C. It gets 87 mm of precipitation over about 6 rainy days. Estimated sunshine is 65% of daylight hours, derived from ERA5 cloud cover. The March record high is 41°C (2023) and the record low is -1°C (1977).
Santa Rosa weather in April
In April, Santa Rosa averages a high of 23°C and a low of 9°C. It gets 53 mm of precipitation over about 5 rainy days. Estimated sunshine is 66% of daylight hours, derived from ERA5 cloud cover. The April record high is 36°C (2009) and the record low is -7°C (1989). April is one of the most comfortable months to visit.
Santa Rosa weather in May
In May, Santa Rosa averages a high of 19°C and a low of 6°C. It gets 31 mm of precipitation over about 4 rainy days. Estimated sunshine is 56% of daylight hours, derived from ERA5 cloud cover. The May record high is 32°C (1995) and the record low is -8°C (1971). May is one of the most comfortable months to visit.
Santa Rosa weather in June
In June, Santa Rosa averages a high of 16°C and a low of 2°C. It gets 17 mm of precipitation over about 3 rainy days. Estimated sunshine is 47% of daylight hours, derived from ERA5 cloud cover. The June record high is 27°C (2013) and the record low is -11°C (1970).
Santa Rosa weather in July
In July, Santa Rosa averages a high of 15°C and a low of 2°C. It gets 16 mm of precipitation over about 3 rainy days. Estimated sunshine is 54% of daylight hours, derived from ERA5 cloud cover. The July record high is 27°C (1971) and the record low is -11°C (1970).
Santa Rosa weather in August
In August, Santa Rosa averages a high of 18°C and a low of 3°C. It gets 25 mm of precipitation over about 3 rainy days. Estimated sunshine is 59% of daylight hours, derived from ERA5 cloud cover. The August record high is 33°C (1996) and the record low is -9°C (2010). August is one of the most comfortable months to visit.
Santa Rosa weather in September
In September, Santa Rosa averages a high of 21°C and a low of 6°C. It gets 40 mm of precipitation over about 4 rainy days. Estimated sunshine is 55% of daylight hours, derived from ERA5 cloud cover. The September record high is 34°C (2013) and the record low is -9°C (1974). September is one of the most comfortable months to visit.
Santa Rosa weather in October
In October, Santa Rosa averages a high of 24°C and a low of 9°C. It gets 80 mm of precipitation over about 6 rainy days. Estimated sunshine is 63% of daylight hours, derived from ERA5 cloud cover. The October record high is 38°C (2021) and the record low is -4°C (1972). October is one of the most comfortable months to visit.
Santa Rosa weather in November
In November, Santa Rosa averages a high of 27°C and a low of 12°C. It gets 71 mm of precipitation over about 6 rainy days. Estimated sunshine is 63% of daylight hours, derived from ERA5 cloud cover. The November record high is 39°C (1994) and the record low is -1°C (1992).
Santa Rosa weather in December
In December, Santa Rosa averages a high of 31°C and a low of 15°C. It gets 83 mm of precipitation over about 7 rainy days. Estimated sunshine is 69% of daylight hours, derived from ERA5 cloud cover. The December record high is 43°C (1971) and the record low is 2°C (2001).
Sunshine, humidity and wind in Santa Rosa
February is the sunniest month in Santa Rosa, with estimated sunshine of 71% of daylight hours from ERA5 cloud cover. June is the cloudiest, at 47%. The annual cloud-cover estimate is 61% of daylight hours; it is not a measurement of sunshine duration. Santa Rosa is sunnier than 70% of Argentina.
Humidity peaks in May at 69% and is lowest in December at 49%.
Santa Rosa has about 37 days a year above 32°C. Santa Rosa is hotter than 73% of Argentina.
First and last freeze in Santa Rosa
The first fall freeze in Santa Rosa typically comes around May 6, and the last spring freeze around September 21. That leaves a frost-free growing season of about 227 days.
Santa Rosa weather records
These records cover SANTA ROSA AERO during 1970–2025. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Santa Rosa station is 45°C, on January 18, 2014. The coldest is -11°C, on July 10, 1988.
The wettest day in the available station history brought 330 mm of precipitation, on February 20, 1980.
30 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.1°C per decade since 1970.
The best time to visit Santa Rosa
The most comfortable time to visit is typically April to May and August to October, when daytime highs sit near 21°C.
Winter (June–August) is mild, with average highs around 16°C and lows near 2°C.
Spring (September–November) is warm, with average highs around 24°C and lows near 9°C.
Summer (December–February) is hot, with average highs around 31°C and lows near 16°C.
Autumn (March–May) is warm, with average highs around 23°C and lows near 9°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 17° | 32° | 87 mm | 7 | 53% | 69% | 45° | 3° |
| February | 15° | 31° | 69 mm | 6 | 56% | 71% | 42° | 3° |
| March | 13° | 28° | 87 mm | 6 | 64% | 65% | 41° | -1° |
| April | 9° | 23° | 53 mm | 5 | 67% | 66% | 36° | -7° |
| May | 6° | 19° | 31 mm | 4 | 69% | 56% | 32° | -8° |
| June | 2° | 16° | 17 mm | 3 | 69% | 47% | 27° | -11° |
| July | 2° | 15° | 16 mm | 3 | 64% | 54% | 27° | -11° |
| August | 3° | 18° | 25 mm | 3 | 55% | 59% | 33° | -9° |
| September | 6° | 21° | 40 mm | 4 | 52% | 55% | 34° | -9° |
| October | 9° | 24° | 80 mm | 6 | 51% | 63% | 38° | -4° |
| November | 12° | 27° | 71 mm | 6 | 50% | 63% | 39° | -1° |
| December | 15° | 31° | 83 mm | 7 | 49% | 69% | 43° | 2° |
Station: SANTA ROSA AERO, 6 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2025; 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.
Santa Rosa climate questions
How much rain does Santa Rosa get?
Santa Rosa gets 657 mm of precipitation in an average year, over about 59 rainy days.
What is the wettest month in Santa Rosa?
January is the wettest month in Santa Rosa, with 87 mm. July is the driest, with 16 mm.
How many rainy days does Santa Rosa have a year?
Santa Rosa has about 59 days with measurable rain in an average year. January has the most, about 7.
What is the hottest month in Santa Rosa?
January is the warmest month in Santa Rosa, with an average high of 32°C.
What is the coldest month in Santa Rosa?
July is the coldest month in Santa Rosa, with an average low of 2°C.
What is the record high temperature in Santa Rosa?
Within the available 1970–2025 station history, the record high at the Santa Rosa station is 45°C, set on January 18, 2014. The record low is -11°C, on July 10, 1988.
What is the sunniest month in Santa Rosa?
February is the sunniest month in Santa Rosa, with estimated sunshine of 71% of daylight hours from ERA5 cloud cover. June is the cloudiest.
When is the first frost in Santa Rosa?
The first fall freeze in Santa Rosa typically comes around May 6. The last spring freeze is around September 21.
What is the best time to visit Santa Rosa?
The most comfortable time to visit is typically April to May and August to October, when daytime highs sit near 21°C.