Click on a day for an hourly weather forecast
The temperatures in Lisboa in August are comfortable with low of 17°C and and high up to 29°C.
There shouldn't be any rainy days in in Lisboa during August. Having said that, the days are very hot in August so hanging out outside is more recomanded during the after noons and evening time.
Our weather forecast can give you a great sense of what weather to expect in Lisboa in August 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 |