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San Carlos Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit San Carlos.
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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 most comfortable overall weather for exploring San Carlos is usually found in January, February, March, April, November and December. Conditions are generally least comfortable in July, August and September.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
excellent
Feb
excellent
Mar
excellent
Apr
excellent
May
very good
Jun
good
Jul
very hot
Aug
very hot
Sep
very hot
Oct
very good
Nov
excellent
Dec
excellent
- Best overall: January, February, March, April, November and December
- Warmest weather: July, August and September
- Seasonal pattern: Very little rainfall for most of the year, with very hot summers and warm winters
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 very little rainfall for most of the year, with very hot summers and warm winters.
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 on the map
San Carlos is highlighted - select any city to see its climate.
Popular in October
Where to go in October - average daytime high across popular destinations.
Los Cabos32°C (90°F) Puerto Peñasco30°C (86°F) Tulum
30°C (86°F) Puerto Vallarta29°C (84°F) Cancún30°C (86°F) Playa del Carmen30°C (86°F) Mexico City
22°C (72°F) Bucket list
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