Santa Rosa Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Santa Rosa.
Climate overview of Santa Rosa
Santa Rosa, La Pampa, Argentina, experiences significant temperature variation throughout the year. Summers bring daytime highs of 31°C (88°F) in January, while winters cool to 15°C (59°F) in July.
Santa Rosa sees a moderate amount of rainfall, totalling around 731 mm (29 in) per year. It experiences a distinct dry season from May to August, with very warm summers and mild winters, creating some seasonal variation. The sunniest month is January, with 10.4 hours of sunshine per day on average.
Santa Rosa Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Santa Rosa - and find the best time to visit.
Monthly Temperature in Santa Rosa
Depending on the time of the year, temperatures range from very warm to moderate in Santa Rosa. Average maximum daytime temperatures range from a very warm 31°C (88°F) in January, the warmest time of the year, to a moderate 15°C (59°F) during cooler months like July.
At night, you can expect temperatures ranging from 18°C (64°F) in January to around 3°C (37°F) during July.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Santa Rosa
Generally, Santa Rosa has a moderate amount of precipitation, averaging 731 mm (29 in) of rainfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, February it receives moderate rainfall, averaging 90 mm (3.5 in) of precipitation, recorded across 7 rainy days. In contrast, the driest month June brings less rainfall, with 20 mm (0.8 in) over 4 rainy days. For more details, please visit our Santa Rosa Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Santa Rosa
Seasonal changes in sunshine hours are quite dramatic in Santa Rosa. While January receives considerable daily sunshine with up to 10.4 hours, June marks the darkest time of the year, where sunshine is scarce with only 4.3 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Santa Rosa by Month
The relative humidity is high throughout the year in Santa Rosa.
The city experiences its highest humidity in June, reaching 79%. In January, the humidity drops to its lowest level at 58%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Santa Rosa
The mean wind speed over the year ranges from 2 m/s (4 knots) in May and June to 4 m/s (8 knots) in September, October, November and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Santa Rosa
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: March, April, August, September, October and November
- Warmest weather: January, February and December
- Most sunshine: January and December
- Seasonal pattern: A distinct dry season from May to August, with very warm summers and mild winters
Frequently asked questions about the climate in Santa Rosa
What is the best time to visit Santa Rosa?
March, April, August, September, October and November typically offer the most optimal weather in Santa Rosa. In contrast, January, February and December tend to have less optimal conditions. Santa Rosa has a distinct dry season from May to August, with very warm summers and mild winters.
What temperatures can I expect in Santa Rosa?
Daytime highs range from 15°C (59°F) in July to 31°C (88°F) in January. Nighttime lows range from 3°C (37°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Santa Rosa get?
Annual rainfall is around 731 mm (29 in). February is the wettest month with 90 mm (3.5 in), while June is the driest with 20 mm (0.8 in).
How sunny is Santa Rosa?
Santa Rosa receives around 2,535 hours of sunshine per year. January is the sunniest month with 311 hours, while June is the cloudiest with just 129 hours. Overall, Santa Rosa enjoys abundant sunshine.
Santa Rosa 3-Day Forecast
Santa Rosa on the map
Santa Rosa is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Córdoba
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18°C (64°F) Mar del Plata15°C (59°F) San Carlos de Bariloche
6°C (43°F) San Martín de los Andes6°C (43°F) 
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