San Carlos Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit San Carlos.
Climate overview of San Carlos
San Carlos, in Sonora, Mexico, experiences significant temperature changes throughout the year. Very hot summers shift to warm winters, while the area maintains low rainfall patterns with dry conditions year-round. The dry climate and consistent sunshine make it a popular winter retreat for snowbirds escaping colder climates. Let's explore all the climate details to give you a complete overview on when to visit.
San Carlos Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Carlos — and find the best time to visit.
Monthly Temperature in San Carlos
Depending on the time of the year, temperatures range from very hot to comfortable in San Carlos. Average maximum daytime temperatures range from a very hot 35°C (95°F) in August, the warmest time of the year, to a comfortable 23°C (73°F) during cooler months like January.
At night, you can expect temperatures ranging from 29°C (84°F) in August to around 14°C (57°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in San Carlos
San Carlos has a dry climate with very low precipitation, averaging 188 mm (7.4 in) of rainfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, September it receives moderate rainfall, averaging 69 mm (2.7 in) of precipitation, recorded across 3 rainy days. In contrast, the driest month May brings less rainfall, with 0.4 mm (0.02 in) over 0 rainy days. For more details, please visit our San Carlos Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit San Carlos
The consistently dry weather means you can step outside without worrying about rain, though remember to carry water and sun protection. Need help choosing your next travel destination? We offer a specialized tool that matches you with locations based on your weather preferences. Explore destinations that suit your climate preferences.
Frequently asked questions about the climate in San Carlos
What is the best time to visit San Carlos?
January, February, March, April, November and December typically offer the most optimal weather in San Carlos. In contrast, July, August and September tend to have less optimal conditions. San Carlos has a distinct dry season from October to August.
What temperatures can I expect in San Carlos?
Daytime highs range from 23°C (73°F) in January to 35°C (95°F) in August. Nighttime lows range from 14°C (57°F) to 29°C (84°F). Temperatures vary considerably through the year.
How much rain does San Carlos get?
Annual rainfall is around 188 mm (7.4 in). September is the wettest month with 69 mm (2.7 in), while May is the driest with 0.4 mm (0.02 in).
San Carlos 3-Day Forecast
San Carlos 3-Day Forecast
San Carlos on the map
San Carlos is highlighted — select any city to see its climate.
Popular this month
Where to go in June — average daytime high across popular destinations.
Los Cabos
33°C (91°F) Puerto Peñasco31°C (88°F) Tulum
30°C (86°F) Cancún30°C (86°F) Playa del Carmen30°C (86°F) San Miguel de Allende
30°C (86°F) Puerto Vallarta30°C (86°F) Mexico City25°C (77°F) 
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