Click on a day for an hourly weather forecast
The weather in San Bernardo in December is hot. The average temperatures are between 21°C and 34°C.
You can expect about 3 to 8 days of rain in San Bernardo during the month of December. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in San Bernardo in December 2026.
If you’re planning to visit San Bernardo in the near future, we highly recommend that you review the 14 day weather forecast for San Bernardo before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 35° / 22° | 8 | 23 | 0 | 199 mm | Bad | San Bernardo in January |
| February | 34° / 22° | 6 | 22 | 0 | 153 mm | Ok | San Bernardo in February |
| March | 31° / 19° | 6 | 25 | 0 | 128 mm | Good | San Bernardo in March |
| April | 27° / 17° | 5 | 25 | 0 | 126 mm | Perfect | San Bernardo in April |
| May | 22° / 14° | 5 | 26 | 0 | 91 mm | Good | San Bernardo in May |
| June | 20° / 11° | 3 | 27 | 0 | 51 mm | Good | San Bernardo in June |
| July | 20° / 11° | 2 | 29 | 0 | 39 mm | Good | San Bernardo in July |
| August | 24° / 12° | 2 | 29 | 0 | 47 mm | Perfect | San Bernardo in August |
| September | 26° / 14° | 4 | 26 | 0 | 71 mm | Perfect | San Bernardo in September |
| October | 28° / 17° | 8 | 23 | 0 | 184 mm | Good | San Bernardo in October |
| November | 31° / 18° | 8 | 22 | 0 | 213 mm | Ok | San Bernardo in November |
| December | 34° / 21° | 7 | 24 | 0 | 175 mm | Bad | San Bernardo in December |