Click on a day for an hourly weather forecast
The temperatures in Terrassa in September are comfortable with low of 19°C and and high up to 25°C.
You can expect about 3 to 8 days of rain in Terrassa during the month of September. 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 Terrassa in September 2026.
If you’re planning to visit Terrassa in the near future, we highly recommend that you review the 14 day weather forecast for Terrassa before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 12° / 6° | 3 | 28 | 0 | 59 mm | Ok | Terrassa in January |
| February | 13° / 6° | 3 | 24 | 1 | 39 mm | Ok | Terrassa in February |
| March | 15° / 8° | 4 | 27 | 0 | 80 mm | Good | Terrassa in March |
| April | 18° / 11° | 6 | 24 | 0 | 91 mm | Good | Terrassa in April |
| May | 22° / 14° | 4 | 27 | 0 | 67 mm | Good | Terrassa in May |
| June | 26° / 18° | 4 | 26 | 0 | 61 mm | Perfect | Terrassa in June |
| July | 28° / 22° | 3 | 28 | 0 | 50 mm | Perfect | Terrassa in July |
| August | 28° / 22° | 3 | 28 | 0 | 56 mm | Perfect | Terrassa in August |
| September | 25° / 19° | 4 | 26 | 0 | 87 mm | Perfect | Terrassa in September |
| October | 21° / 15° | 5 | 26 | 0 | 112 mm | Good | Terrassa in October |
| November | 16° / 10° | 4 | 26 | 0 | 82 mm | Good | Terrassa in November |
| December | 13° / 7° | 2 | 29 | 0 | 37 mm | Ok | Terrassa in December |