San Gabriel (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit San Gabriel.
Climate overview of San Gabriel
San Gabriel, California, United States of America, sees big temperature differences between seasons, with September peaking at 32°C (90°F) and December dropping to 20°C (68°F).
Rainfall is modest, totalling around 329 mm (13 in) annually. The city experiences a distinct dry season from April to November, with very warm summers and pleasant winters. December tends to be the wettest month. The sunniest month is July, with 12.1 hours of sunshine per day on average.
San Gabriel Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Gabriel - and find the best time to visit.
Monthly Temperature in San Gabriel
Visitors to San Gabriel can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a very warm 32°C (90°F) in September, the warmest time of the year, to a pleasant 20°C (68°F) during cooler months like December.
At night, you can expect temperatures ranging from 18°C (64°F) in September to around 8°C (46°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in San Gabriel
San Gabriel's climate is marked by below-average rainfall, accumulating 329 mm (13 in) of precipitation yearly. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives moderate rainfall, averaging 82 mm (3.2 in) of precipitation, recorded across 8 rainy days. In contrast, the driest month August brings less rainfall, with 0.4 mm (0.02 in) over 0 rainy days. For more details, please visit our San Gabriel 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 San Gabriel
Seasonal changes in sunshine hours are quite dramatic in San Gabriel. While July receives considerable daily sunshine with up to 12.1 hours, November marks the darkest time of the year, where sunshine is scarce with only 7.2 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 San Gabriel by Month
The relative humidity is high throughout the year in San Gabriel.
The city experiences its highest humidity in May, reaching 73%. In November, the humidity drops to its lowest level at 50%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit San Gabriel
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, May, June, October, November and December
- Warmest weather: July, August and September
- Most sunshine: July and August
- Fewest rainy days: June, July, August and September
- Seasonal pattern: A distinct dry season from April to November, with very warm summers and pleasant winters
Frequently asked questions about the climate in San Gabriel
What is the best time to visit San Gabriel?
January, February, March, April, May, June, October, November and December typically offer the most optimal weather in San Gabriel. In contrast, July, August and September tend to have less optimal conditions. San Gabriel has a distinct dry season from April to November, with very warm summers and pleasant winters.
What temperatures can I expect in San Gabriel?
Daytime highs range from 20°C (68°F) in December to 32°C (90°F) in September. Nighttime lows range from 8°C (46°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does San Gabriel get?
Annual rainfall is around 329 mm (13 in). December is the wettest month with 82 mm (3.2 in), while August is the driest with 0.4 mm (0.02 in).
How sunny is San Gabriel?
San Gabriel receives around 3,257 hours of sunshine per year. July is the sunniest month with 364 hours, while November is the cloudiest with just 217 hours. Overall, San Gabriel enjoys abundant sunshine.
San Gabriel 3-Day Forecast
San Gabriel (CA) 3-Day Forecast
San Gabriel on the map
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