Click on a day for an hourly weather forecast
The temperatures in Lisboa in September are comfortable with low of 17°C and and high up to 27°C.
You can expect a few rainy days in Lisboa during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in Lisboa in September 2025.
If you’re planning to visit Lisboa in the near future, we highly recommend that you review the 14 day weather forecast for Lisboa before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 15° / 9° | 5 | 26 | 0 | 76 mm | Good | Lisboa in January |
| February | 16° / 9° | 4 | 24 | 0 | 83 mm | Good | Lisboa in February |
| March | 18° / 10° | 5 | 26 | 0 | 88 mm | Good | Lisboa in March |
| April | 19° / 12° | 4 | 26 | 0 | 81 mm | Good | Lisboa in April |
| May | 23° / 14° | 3 | 28 | 0 | 53 mm | Perfect | Lisboa in May |
| June | 25° / 16° | 1 | 29 | 0 | 16 mm | Perfect | Lisboa in June |
| July | 28° / 17° | 0 | 31 | 0 | 4 mm | Perfect | Lisboa in July |
| August | 29° / 17° | 0 | 31 | 0 | 4 mm | Good | Lisboa in August |
| September | 27° / 17° | 2 | 28 | 0 | 38 mm | Perfect | Lisboa in September |
| October | 24° / 16° | 3 | 28 | 0 | 94 mm | Perfect | Lisboa in October |
| November | 18° / 12° | 6 | 24 | 0 | 109 mm | Good | Lisboa in November |
| December | 16° / 10° | 4 | 27 | 0 | 99 mm | Good | Lisboa in December |