SE 12 mph
Feels like: 64°F
Precip: 100%
World Resorts Portugal Cascais Weather September Weather in Cascais

Cascais Weather: September

Average Day Temperature: 78.4°F
Average Night Temperature: 68.9°F
Sea Water Temperature: 66.8°F
Number of Sunny Days: 23 days
Sunshine Hours: 11.8 - 13.0 hours
Number of Rainy Days: 2 days
Precipitation Totals: 1.2 in

Air Temperature in September, °F

Select Year: 2023 2022 2021

The highest day temperature in September 2023 was 80°F. The lowest night temperature was 64°F. The average values for day and night temperatures during September were 73.2°F и 67.7°F respectivly.

Cascais Water Sea Temperature in September, °F

Select Year: 2023 2022 2021

The average sea surface temperature in September 2023 for Cascais was 66.5°F. The maximum and minimum values were 61.6°F and 68.8°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Cascais is 1.2 in. It makes september one of the least rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 11.3 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Cascais in September is 10.1 hours.

Best Time to Visit Cascais
The most sunny months:
August 27 days
July 26 days
September 23 days
The most warm months:
August 80.2 °F
July 78.7 °F
September 78.4 °F
Warmest sea temperature:
September 66.8 °F
October 66.0 °F
August 65.5 °F
The most cold months:
January 60.2 °F
February 60.5 °F
March 62.5 °F
The most rainy months:
November 5 days
October 4 days
December 4 days
The most windy months:
July 14 mph
August 13 mph
June 13 mph

Cascais on the Weather Map

Portugal Resorts:
Albufeira +70
Algarve +68
Cascais +64
Faro +68
Funchal +60
Lagos +68
Lisbon +66
Madeira +60
Peniche +62
Ponta Delgada +66
Portimao +70
Porto +62
Porto Santo Island +66
Sao Miguel +66
Setubal +66
24 Hours Weather Forecast
Local time: 13:06
20 may, monday
1500 64°F
12 mph
1800 64°F
14 mph
2100 60°F
12 mph
21 may, tuesday
0000 60°F
13 mph
0300 60°F
12 mph
0600 60°F
11 mph
0900 64°F
10 mph
1200 66°F
9 mph