Click on a day for an hourly weather forecast
The temperatures in Berkeley in September are comfortable with low of 16°C and and high up to 26°C.
As it is almost never rain during September in Berkeley the weather is perfect for hanging out outside and exploring all that Berkeley has to offer.
Our weather forecast can give you a great sense of what weather to expect in Berkeley in September 2025.
If you’re planning to visit Berkeley in the near future, we highly recommend that you review the 14 day weather forecast for Berkeley before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 15° / 8° | 5 | 27 | 0 | 63 mm | Good | Berkeley in January |
| February | 16° / 8° | 4 | 24 | 0 | 58 mm | Good | Berkeley in February |
| March | 17° / 9° | 5 | 26 | 0 | 53 mm | Good | Berkeley in March |
| April | 19° / 10° | 2 | 28 | 0 | 21 mm | Good | Berkeley in April |
| May | 21° / 11° | 1 | 30 | 0 | 13 mm | Good | Berkeley in May |
| June | 24° / 13° | 0 | 30 | 0 | 6 mm | Perfect | Berkeley in June |
| July | 25° / 14° | 0 | 31 | 0 | 3 mm | Perfect | Berkeley in July |
| August | 25° / 15° | 0 | 31 | 0 | 3 mm | Perfect | Berkeley in August |
| September | 26° / 16° | 0 | 30 | 0 | 4 mm | Perfect | Berkeley in September |
| October | 23° / 14° | 2 | 29 | 0 | 25 mm | Perfect | Berkeley in October |
| November | 18° / 11° | 3 | 27 | 0 | 31 mm | Good | Berkeley in November |
| December | 14° / 8° | 4 | 27 | 0 | 48 mm | Good | Berkeley in December |