Guaymas Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Guaymas.
Climate overview of Guaymas
Guaymas, Sonora, Mexico, sees big temperature differences between seasons, with August peaking at 36°C (97°F) and January dropping to 24°C (75°F).
The city has an arid climate, receiving only 198 mm (7.8 in) of rainfall per year.
Guaymas Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Guaymas - and find the best time to visit.
Monthly Temperature in Guaymas
Visitors to Guaymas can expect significant temperature changes throughout the year. On average, daytime temperatures range from a very hot 36°C (97°F) in August to a comfortable 24°C (75°F) in January.
Nighttime temperatures range from 29°C (84°F) in August to 13°C (55°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Guaymas
Guaymas experiences desert-like conditions in terms of precipitation with almost no rainfall, generally receiving 198 mm (7.8 in) annually. The seasons in Guaymas bring significant changes in precipitation. The wettest month, September, receives moderate rainfall, with an average of 69 mm (2.7 in) of precipitation. This rainfall is distributed across 4 rainy days.
In contrast, the driest month, May, experiences much less rainfall, totaling 0.4 mm (0.02 in) over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Guaymas 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 Guaymas
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January, February, March, April, November and December
- Warmest weather: June, 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 Guaymas
What is the best time to visit Guaymas?
January, February, March, April, November and December typically offer the most optimal weather in Guaymas. In contrast, June, July, August and September tend to have less optimal conditions. Guaymas has very little rainfall for most of the year, with very hot summers and warm winters.
What temperatures can I expect in Guaymas?
Daytime highs range from 24°C (75°F) in January to 36°C (97°F) in August. Nighttime lows range from 13°C (55°F) to 29°C (84°F). Temperatures vary considerably through the year.
How much rain does Guaymas get?
Annual rainfall is around 198 mm (7.8 in). September is the wettest month with 69 mm (2.7 in), while May is the driest with 0.4 mm (0.02 in).
Guaymas 3-Day Forecast
Guaymas on the map
Guaymas is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Puerto Peñasco
35°C (95°F) Los Cabos34°C (93°F) Playa del Carmen
31°C (88°F) Tulum31°C (88°F) Cancún
31°C (88°F) Puerto Vallarta
30°C (86°F) San Miguel de Allende28°C (82°F) Mexico City23°C (73°F) 
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