Best Time to Visit San Bernardino, California, USA
San Bernardino is at its sunniest and driest in April–November.
The best time to visit San Bernardino for sunny, dry weather is April–November — 8 months of the year fit our sunny profiles at this specific location. The drier stretch runs through April–October; the wetter half falls in November–March. At the city itself, monthly average temperatures range from 12.3°C / 54.1°F in January to 26.3°C / 79.3°F in August, with rainfall from 2 mm / 0.1 in (June) to 67 mm / 2.6 in (February). These are point-value climate normals sampled at San Bernardino, California, United States of America's coordinates — usually more actionable for travellers than the country-wide average. San Bernardino's climate is broadly seasonal. The full month-by-month table below lets you match your travel window against our five weather profiles.
Recommended months
| Month | Temp | Rain | Feels like |
|---|---|---|---|
| April | 16.9°C62.4°F | 21 mm0.8″ | Sunny & Mild |
| May | 19.5°C67.1°F | 8 mm0.3″ | Sunny & Mild |
| June | 23°C73.4°F | 2 mm0.1″ | Sunny & Warm |
| July | 26°C78.8°F | 2 mm0.1″ | Sunny & Hot, Sunny & Warm |
| August | 26.3°C79.3°F | 5 mm0.2″ | Sunny & Hot |
| September | 24.3°C75.7°F | 9 mm0.4″ | Sunny & Warm |
| October | 20.1°C68.2°F | 10 mm0.4″ | Sunny & Warm, Sunny & Mild |
| November | 15.4°C59.7°F | 27 mm1.1″ | Sunny & Mild |
Frequently asked questions
When is the best time to visit San Bernardino?
The best time to visit San Bernardino for sunny, dry weather is April, May, June, July, August, September, October, November. At the city itself, the warmest month is August averaging 26.3°C / 79.3°F, and the driest is June with about 2 mm / 0.1 in of rain. These are point-value climate normals sampled at San Bernardino's coordinates.
When is the rainy season in San Bernardino?
The rainy season at San Bernardino, California runs through November–March, when monthly rainfall exceeds the annual median of about 21 mm / 0.8 in. The wettest single month is February (67 mm / 2.6 in).
What is the driest month in San Bernardino?
The driest month in San Bernardino is June, averaging about 2 mm / 0.1 in of rainfall. Temperature that month averages 23°C / 73.4°F.
What months should I avoid visiting San Bernardino?
The least comfortable months for travel to San Bernardino — based on point-value climate at the city — are January, February, March, December. These are the wettest or coolest months at this location. Rainfall peaks at 67 mm / 2.6 in in February, and the coldest month averages 12.3°C / 54.1°F.
Is San Bernardino climate different from United States of America overall?
Yes, usually. Our San Bernardino figures are point-value climate normals sampled at the city itself, while our United States of America figures are area-weighted averages across the whole country. The two can diverge substantially in geographically diverse or elevation-varied countries. The month-by-month table below reflects San Bernardino specifically — usually the more actionable data for a traveller planning to spend time in the city.