Click on a day for an hourly weather forecast
The temperatures in San Jose in January are quite cold with temperatures between 5°C and 16°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in San Jose during the month of January. 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 Jose in January 2025.
If you’re planning to visit San Jose in the near future, we highly recommend that you review the 14 day weather forecast for San Jose before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 5° | 4 | 27 | 0 | 70 mm | Good | San Jose in January |
| February | 17° / 4° | 4 | 24 | 0 | 61 mm | Good | San Jose in February |
| March | 18° / 5° | 5 | 26 | 0 | 65 mm | Good | San Jose in March |
| April | 20° / 6° | 2 | 28 | 0 | 29 mm | Good | San Jose in April |
| May | 23° / 8° | 1 | 30 | 0 | 15 mm | Perfect | San Jose in May |
| June | 27° / 11° | 1 | 29 | 0 | 5 mm | Perfect | San Jose in June |
| July | 30° / 13° | 0 | 31 | 0 | 4 mm | Good | San Jose in July |
| August | 30° / 13° | 0 | 31 | 0 | 3 mm | Good | San Jose in August |
| September | 29° / 13° | 0 | 30 | 0 | 7 mm | Good | San Jose in September |
| October | 25° / 11° | 1 | 30 | 0 | 25 mm | Perfect | San Jose in October |
| November | 19° / 7° | 3 | 27 | 0 | 39 mm | Good | San Jose in November |
| December | 15° / 5° | 4 | 27 | 0 | 56 mm | Good | San Jose in December |