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Portugal Weather September
To help you choose the best time to travel, you can find climate data below on the weather in Portugal in September.
| Portugal Weather September: | Lisbon | Algarve | |
 | average daily high | +26.5°C | +26.9°C |
 | average daily low | +17.6°C | +17°C |
 | sea temperature | +19.9°C | +21.4°C |
 | daylight hours | 12.9h | 12.8h |
 | sunny/overcast hours | 8.7/4.2h | 9.1/3.7h |
 | average monthly precipitation | 29 mm | 13 mm |
Temperature in Portugal
The average daily maximum in September is +26.5 — +26.9°C, and the minimum +17.6 — +17°C.
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Sea temperature
The average monthly temperature in the Atlantic Ocean on the beaches of Lisbon in September is +19.9 degrees and on the beaches of Algarve +21.4 degrees.
The water is warm enough for most people to bathe in, however a majority would still consider it too cool.
Precipitation
The normal amount of precipitation for September is from 13 to 29 mm, a negligible amount.