When is the best time to go to San Bernardino
The chart above shows the best time of year to visit San Bernardino, United States. These are based on an analysis of weather averages such as temperature, rainfall and number of hours of sunshine. These ratings are based solely on the climate and do not take into account other factors such as accommodation prices and how busy it is likely to be.
Average temperatures in San Bernardino
San Bernardino weather by month
Please note our recommendations for when to visit San Bernardino are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
January
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 17°C | 70mm | 7.9hrs | 11.1hrs |
The weather in January in San Bernardino is characteristically mild and reasonably dry.
Based on weather alone, this is probably a time of year to avoid going to San Bernardino for your holidays. The weather is often not a good and not conducive to spending time outdoors.
January is in the winter in San Bernardino and is typically the coldest month of the year. Daytime maximum temperatures average around a cool 19°C (66°F), whilst at night 4°C (40°F) is normal.
On average January is the driest month of the year in San Bernardino with around 70mm 2.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.9 hours of sunshine per day.
San Bernardino weather in January »
February
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 18°C | 61mm | 8.6hrs | 11.8hrs |
February in San Bernardino is generally reasonably dry with the temperature being mild.
Based on weather alone, this is probably a time of year to avoid going to San Bernardino for your holidays. The weather is often not a good and not conducive to spending time outdoors.
February is in the winter in San Bernardino and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around 21°C (69°F), whilst at night 6°C (42°F) is normal.
On average February is the 2nd driest month of the year in San Bernardino with around 61mm 2.4 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.6 hours of sunshine per day.
San Bernardino weather in February »
March
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 19°C | 56mm | 9.2hrs | 12.8hrs |
The weather in March in San Bernardino is characteristically mild and reasonably dry.
Although outside the main holiday season, there is still plenty of pretty acceptable weather around this time of year. This makes it an okay time to visit San Bernardino.
March is in the spring in San Bernardino and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around 21°C (69°F), whilst at night 6°C (44°F) is normal.
On average March is the 3rd driest month of the year in San Bernardino with around 56mm 2.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.2 hours of sunshine per day.
San Bernardino weather in March »
April
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 21°C | 31mm | 10.6hrs | 13.9hrs |
San Bernardino's weather in April is typically mild and reasonably dry in nature.
Although outside the main holiday season, there is still plenty of fairly acceptable weather around this time of year. This makes it an okay time to visit San Bernardino.
April is in the spring in San Bernardino and is typically the 4th coldest month of the year. Daytime maximum temperatures average around 24°C (75°F), whilst at night 8°C (47°F) is normal.
On average April is the 4th driest month of the year in San Bernardino with around 31mm 1.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 3 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.6 hours of sunshine per day.
San Bernardino weather in April »
May
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 24°C | 11mm | 10.4hrs | 14.8hrs |
May is a dry month in San Bernardino and the temperature is generally warm.
It is perhaps the perfect month to visit San Bernardino, with some extremely good weather at this time of year.
May is in the spring in San Bernardino and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a comfortable 26°C (79°F), whilst at night 11°C (52°F) is normal.
On average May is the 5th driest month of the year in San Bernardino with around 11mm 0.4 inches of rain making it a dry time to visit. This rainfall is typically spread over 1 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.4 hours of sunshine per day.
San Bernardino weather in May »
June
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 28°C | 2mm | 11.2hrs | 11.1hrs |
San Bernardino's weather in June is typically warm and very dry in nature.
Although outside the main holiday season, there is still plenty of reasonably acceptable weather around this time of year. This makes it an okay time to visit San Bernardino.
June is in the summer in San Bernardino and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a comfortable 31°C (87°F), whilst at night 14°C (57°F) is normal.
On average June is the 6th driest month of the year in San Bernardino with around 2mm 0.1 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 11.2 hours of sunshine per day.
San Bernardino weather in June »
July
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 32°C | 2mm | 12.2hrs | 11.8hrs |
July in San Bernardino is generally very dry with the temperature being hot.
Although outside the main holiday season, there is still plenty of quite acceptable weather around this time of year. This makes it an okay time to visit San Bernardino.
July is in the summer in San Bernardino and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a warm 35°C (96°F), whilst at night 17°C (62°F) is normal.
On average July is the 6th wettest month of the year in San Bernardino with around 2mm 0.1 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 12.2 hours of sunshine per day.
San Bernardino weather in July »
August
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 32°C | 5mm | 11.7hrs | 12.8hrs |
The weather in August in San Bernardino is characteristically hot and very dry.
Although outside the main holiday season, there is still plenty of relatively acceptable weather around this time of year. This makes it an okay time to visit San Bernardino.
August is in the summer in San Bernardino and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a warm 35°C (95°F), whilst at night 17°C (63°F) is normal.
On average August is the 5th wettest month of the year in San Bernardino with around 5mm 0.2 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 11.7 hours of sunshine per day.
San Bernardino weather in August »
September
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 29°C | 9mm | 10.4hrs | 13.9hrs |
San Bernardino's weather in September is typically hot and very dry in nature.
Although outside the main holiday season, there is still plenty of relatively acceptable weather around this time of year. This makes it an okay time to visit San Bernardino.
September is in the fall / autumn in San Bernardino and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 32°C (90°F), whilst at night 15°C (59°F) is normal.
On average September is the 4th wettest month of the year in San Bernardino with around 9mm 0.4 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 10.4 hours of sunshine per day.
San Bernardino weather in September »
October
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 25°C | 10mm | 9.3hrs | 14.8hrs |
October is a dry month in San Bernardino and the temperature is generally warm.
It is perhaps the perfect month to visit San Bernardino, with some particularly good weather at this time of year.
October is in the fall / autumn in San Bernardino and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 28°C (82°F), whilst at night 11°C (53°F) is normal.
On average October is the 3rd wettest month of the year in San Bernardino with around 10mm 0.4 inches of rain making it a dry time to visit. This rainfall is typically spread over 2 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.3 hours of sunshine per day.
San Bernardino weather in October »
November
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 20°C | 37mm | 8.1hrs | 11.1hrs |
November is a reasonably dry month in San Bernardino and the temperature is generally mild.
Although outside the main holiday season, there is still plenty of relatively acceptable weather around this time of year. This makes it an okay time to visit San Bernardino.
November is in the fall / autumn in San Bernardino and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 7°C (44°F) is normal.
On average November is the 2nd wettest month of the year in San Bernardino with around 37mm 1.5 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 3 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.1 hours of sunshine per day.
San Bernardino weather in November »
December
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 17°C | 48mm | 7.8hrs | 11.8hrs |
December in San Bernardino is generally reasonably dry with the temperature being mild.
Based on weather alone, this is probably a time of year to avoid going to San Bernardino for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
December is in the winter in San Bernardino and is typically the warmest month of the year. Daytime maximum temperatures average around a cool 19°C (66°F), whilst at night 4°C (39°F) is normal.
On average December is the wettest month of the year in San Bernardino with around 48mm 1.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.8 hours of sunshine per day.
Other monthly averages
San Bernardino weather stats
| Hottest month: | August | 34.6°C 94.3°F |
|---|---|---|
| Driest month: | July | 2mm 0.1ins |
| Sunniest month: | August | 11.7hrs |
| Coldest month: | January | 18.6°C 65.5°F |
| Wettest month: | January | 70mm 2.8ins |
| Warmest sea: | August | 19.7°C 67.5°F |
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