San Bernardino weather by month & the best time to visit

🇺🇸 United States · city break · semi-arid climate

The best time to visit San Bernardino is June — its sunniest month (Sunshine Score 100/100), with May and April close behind. San Bernardino averages about 3,804 hours of sunshine a year. Daytime highs around 32°C / 90°F and roughly 1 mm of rain in June.

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Sun hours / year

3,804

Sunniest month

June

Peak score

100/100

Rain / year

290 mm

Midday UV at peak

10 (very high)

Population

1.7M

Elevation

338 m

When is the best time to visit San Bernardino?

For sunshine, the best time to visit San Bernardino is June, then May and April. The dullest month is August (60/100, 3 mm of rain). The full month-by-month picture is in the table below.

How sunny is San Bernardino?

San Bernardino is one of the sunniest places on Earth: about 3,804 hours of sunshine a year. June (100/100) is noticeably better than August (60). It ranks #7 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. Rain is strongly seasonal here: roughly 62% of the year's 290 mm falls in the three months around January.

Sunshine Score by month

See San Bernardino on the interactive sunshine globe →

Nearby places for sunshine

• Ontario United States · 34 km · best in May · 3,804 h sun/yr
• Palm Springs United States · 74 km · best in Apr · 3,777 h sun/yr
• Los Angeles United States · 109 km · best in Jun · 3,009 h sun/yr
• San Diego United States · 152 km · best in Jul · 2,854 h sun/yr
• Tijuana Mexico · 175 km · best in May · 3,734 h sun/yr
• Santa Barbara United States · 242 km · best in Jul · 3,525 h sun/yr

Nearest destinations

• Hawthorne United States · 103 km · 3,009 h sun/yr · best in Jun