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Average temperatures, rainfall, sunshine and the best time to visit Santa Rosalía.
The climate in Santa Rosalía, Aguascalientes, Mexico, is marked by large temperature swings across the seasons, ranging from 34°C (93°F) in August to 21°C (70°F) in January.
With just 143 mm (5.6 in) of annual rainfall, the city has a dry, desert-like climate.
Pick a month to see the average temperature, rainfall and sunshine in Santa Rosalía - and find the best time to visit.
In Santa Rosalía, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a very warm 34°C (93°F) in August. In January, the coolest month of the year, temperatures drop to a pleasant 21°C (70°F).
At night, temperatures range from around 28°C (82°F) in August to 14°C (57°F) in January.
Check out our detailed temperature page for more information.
Santa Rosalía sits in an arid zone with minimal moisture, averaging 143 mm (5.6 in) of rainfall per year. Santa Rosalía can be quite wet during September, receiving approximately 58 mm (2.3 in) of precipitation over 2 rainy days.
In contrast, during the driest month (May), you will experience much drier conditions, with 0.2 mm (0.01 in) of precipitation spread across 0 rainy days. For more details, please visit our Santa Rosalía Precipitation page.
The relative humidity is moderate throughout the year in Santa Rosalía.
The city experiences its highest humidity in August, reaching 63%. In April, the humidity drops to its lowest level at 50%. What does this mean? Read our detailed page on humidity levels for further details.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
January, February, March, April, May, November and December typically offer the most optimal weather in Santa Rosalía. In contrast, July and August tend to have less optimal conditions. Santa Rosalía has very little rainfall for most of the year, with very warm summers and pleasant winters.
Daytime highs range from 21°C (70°F) in January to 34°C (93°F) in August. Nighttime lows range from 14°C (57°F) to 28°C (82°F). Temperatures vary considerably through the year.
Annual rainfall is around 143 mm (5.6 in). September is the wettest month with 58 mm (2.3 in), while May is the driest with 0.2 mm (0.01 in).
Santa Rosalía is highlighted - select any city to see its climate.
Where to go in September - average daytime high across popular destinations.
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