Click on a day for an hourly weather forecast
The temperatures in Leiria in September are comfortable with low of 17°C and and high up to 25°C.
You can expect a few rainy days in Leiria 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 Leiria in September 2025.
If you’re planning to visit Leiria in the near future, we highly recommend that you review the 14 day weather forecast for Leiria before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 14° / 9° | 4 | 27 | 0 | 59 mm | Good | Leiria in January |
| February | 15° / 9° | 3 | 25 | 0 | 50 mm | Good | Leiria in February |
| March | 16° / 10° | 4 | 27 | 0 | 50 mm | Good | Leiria in March |
| April | 18° / 11° | 4 | 26 | 0 | 49 mm | Good | Leiria in April |
| May | 21° / 13° | 3 | 29 | 0 | 40 mm | Good | Leiria in May |
| June | 23° / 15° | 1 | 29 | 0 | 19 mm | Perfect | Leiria in June |
| July | 24° / 17° | 0 | 31 | 0 | 7 mm | Perfect | Leiria in July |
| August | 26° / 17° | 0 | 31 | 0 | 8 mm | Perfect | Leiria in August |
| September | 25° / 17° | 2 | 28 | 0 | 26 mm | Perfect | Leiria in September |
| October | 22° / 15° | 3 | 28 | 0 | 68 mm | Good | Leiria in October |
| November | 17° / 12° | 5 | 25 | 0 | 75 mm | Good | Leiria in November |
| December | 15° / 10° | 3 | 28 | 0 | 63 mm | Good | Leiria in December |