San Bernardino weather by month & the best time to visit
United States · city break · semi-arid climate
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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.
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
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 82 | 19° / 66°F | 6° / 43°F | 58 mm | 3 |
| February | 81 | 19° / 66°F | 6° / 43°F | 63 mm | 4 |
| March | 94 | 22° / 72°F | 8° / 46°F | 32 mm | 6 |
| April | 97 | 24° / 75°F | 9° / 48°F | 18 mm | 8 |
| May | 99 | 28° / 82°F | 12° / 54°F | 7 mm | 8 |
| June | 100 | 32° / 90°F | 15° / 59°F | 1 mm | 10 |
| July | 69 | 35° / 95°F | 19° / 66°F | 5 mm | 10 |
| August | 60 | 36° / 97°F | 20° / 68°F | 3 mm | 9 |
| September | 79 | 34° / 93°F | 18° / 64°F | 5 mm | 8 |
| October | 97 | 28° / 82°F | 14° / 57°F | 16 mm | 5 |
| November | 96 | 23° / 73°F | 10° / 50°F | 24 mm | 4 |
| December | 74 | 18° / 64°F | 6° / 43°F | 58 mm | 2 |
Nearest destinations
San Bernardino: questions and answers
What kind of destination is San Bernardino?
San Bernardino is a city break in United States at 338 m elevation with a semi-arid climate.
How many hours of sunshine does San Bernardino get a year?
San Bernardino gets about 3,804 hours of sunshine a year, at its best around June.
When is the best time to visit San Bernardino?
The sunniest time to visit San Bernardino is June, when the Sunshine Score peaks at 100/100 (with May and April close behind). Expect daytime highs around 32°C / 90°F.
What is the least sunny month in San Bernardino?
August is the least sunny month in San Bernardino, scoring 60/100 with about 3 mm of rain.
How strong is the sun in San Bernardino?
The typical midday UV index in San Bernardino peaks around 10 (very high) in June, easing to about 2 (low) in December. Month-by-month midday UV values are in the UV column of the table on this page.
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