Setúbal weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: June – September
What is the weather like in Setúbal in September?
In September, Setúbal is warm: daytime highs average 27 °C, and nights cool down to about 17 °C. The sea averages 18.9 °C – bracing, so a wetsuit helps for longer swims. With around 9 hours of sunshine a day, there is plenty of sun. Rain is rare: about 4 days bring 28 mm in total. On about 5 days the thermometer climbs to 30 °C or more. All in all, September is an excellent month for a holiday in Setúbal.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 82 | 82 | 55 |
| Day | 29° | 27° | 23° |
| Night | 18° | 17° | 15° |
| Sea | 19° | 19° | 19° |
| Sun | 11 h | 9 h | 7 h |
| Rain days | 1 | 4 | 9 |
More details for September
- Daylight
- 12 h 30 min07:16 – 19:46
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 2 daysdew point 18 °C or moreAll months
- Wind
- 19 km/haverage daily peakAll months
- Cloud cover
- 35 %on averageAll months
- Hot days
- 5 days30 °C or moreAll months
- Time zone
- UTC+1Europe/Lisbon
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %27 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %99 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
Setúbal in September: quick answers
Is Setúbal hot in September?
Warm rather than hot: in September, daytime highs in Setúbal average 27 °C and nights cool to about 17 °C. On about 5 days the thermometer climbs to 30 °C or more.
Can you swim in Setúbal in September?
Only if you don't mind cold water: in September the sea averages just 18.9 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Setúbal in September?
Rain is rare: about 4 days bring 28 mm in total.
Setúbal month by month
The whole year in SetúbalAll destinations: PortugalWhere to go in SeptemberSea temperature in September
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