Algarve weather in September
Averages for 3 places in the Algarve in September, from 30 years of weather data.
Holiday weather in September
Excellent
Best time to visit: June – September
Places in the Algarve in September
Sorted by holiday weather score. Each place links to its own page for September.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 86 | 83 | 62 |
| Day | 28° | 26° | 23° |
| Night | 19° | 18° | 16° |
| Sea | 20° | 20° | 20° |
| Sun | 11 h | 9 h | 8 h |
| Rain days | 0 | 3 | 8 |
Algarve in September: quick answers
Is it warm in the Algarve in September?
Yes, it is warm. Daytime highs average 26 °C (24–27 °C by place) and nights 18 °C.
Can you swim in the Algarve in September?
Yes. The sea is 20 °C, 20 °C on average.
Where is it warmest in the Algarve in September?
The warmest are Portimão (27 °C), Albufeira (26 °C) and Lagos (24 °C).
Does it rain much in the Algarve in September?
Rarely: 3 rainy days on average. Plus 9 hours of sunshine a day.
Is September a good time to visit the Algarve?
Yes, September is one of the best months, with a holiday weather score of 83 out of 100. Best time overall: June – September.
Algarve month by month
Algarve: weather by monthWhere to go in SeptemberSea temperature in September
Portugal: all destinationsAll islands & regions
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)