Portugal in August: where is it warmest?
In August, Portimão, Algarve is the warmest place with 30 °C by day, Viana do Castelo the coolest with 23 °C. 24 of 24 destinations have good holiday weather.
All destinations in August, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Portimão, Algarve | 85 | 30° | 20° | 11 h | 0 |
| Albufeira, Algarve | 87 | 29° | 20° | 11 h | 1 |
| Setúbal | 82 | 29° | 19° | 11 h | 1 |
| Coimbra | 92 | 28° | – | 10 h | 2 |
| Fátima | 99 | 27° | – | 10 h | 2 |
| Braga | 99 | 27° | – | 10 h | 4 |
| Guimarães | 99 | 27° | – | 10 h | 4 |
| Faro | 91 | 27° | 22° | 11 h | 1 |
| Olhão | 91 | 27° | 22° | 12 h | 0 |
| Aveiro | 79 | 27° | 18° | 10 h | 3 |
| Porto | 100 | 26° | 17° | 10 h | 4 |
| Amadora | 100 | 26° | 19° | 10 h | 1 |
| Cascais | 81 | 26° | 19° | 10 h | 1 |
| Lagos, Algarve | 85 | 25° | 20° | 11 h | 0 |
| Figueira da Foz | 77 | 25° | 18° | 10 h | 2 |
| Lisbon | 100 | 24° | 19° | 10 h | 1 |
| Funchal, Madeira | 100 | 24° | 24° | 9 h | 3 |
| Sintra | 100 | 24° | – | 10 h | 1 |
| Ponta Delgada, Azores | 94 | 24° | 23° | 9 h | 7 |
| Óbidos | 77 | 24° | 19° | 10 h | 1 |
| Nazaré | 73 | 24° | 19° | 10 h | 2 |
| Angra do Heroísmo | 84 | 23° | 23° | 9 h | 6 |
| Sagres | 74 | 23° | 19° | 11 h | 0 |
| Viana do Castelo | 63 | 23° | 17° | 10 h | 4 |
Portugal in August: quick answers
Portugal in August: where is it warmest?
The warmest places in August are Portimão, Algarve (30 °C), Albufeira, Algarve (29 °C) and Setúbal (29 °C).
Portugal in August: where is the sea warmest?
The sea is warmest at Funchal, Madeira (24 °C), Ponta Delgada, Azores (23 °C) and Angra do Heroísmo (23 °C).
Portugal in August: where is the weather best?
The best holiday weather in August – warm, sunny and dry – is in Porto, Amadora and Lisbon.
Portugal month by month
Portugal: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences