World Resorts Portugal Cascais Weather

Cascais weather in September

Weather in Cascais: September

Average day temperature: 75.1°F
Average night temperature: 66.9°F
Sea water temperature: 64.8°F
Number of sunny days: 23 days
Day length: 11.8 - 13.0 hours
Number of rainy days: 2 days
Precipitation totals: 1.1 in.

Air temperature in September, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
13
26
39
52
65
78
91
Day temperature   
Night temperature

The highest day temperature during September of 2024 was 76°F. At the same time the lowest night temperature was 59°F. Day and night temperature averages during September were 69.5°F and 64.3°F.

Sea water temperature in Cascais in September, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
55
58
61
64
67
70
73
76

The average sea water temperature in September of 2024 was 61.4°F. The highest and lowest sea temperatures during the month were 64.0°F and 59.0°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
73%
17%
10%

Mostly all days in September are sunny but cloudy days are also possible.

Precipitation total in September, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.4
0.8
1.2
1.7
2.1
2.5
2.9
2.4
2.1
1.7
1.2
1.7
1.5
1.3
1.6
2.4
2.1
1.7
1.2
1.7
1.5
1.3
1.6

Precipitation total value in Cascais in September is 0.7 in. Other months of the year show relatively similar values.

Wind speed in September, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
2.4
4.9
7.3
9.7
12.2
14.6
17.1
12.2
12.2
11.4
14.2
13.9
13.6
13.0
12.5
13.1
12.3
12.4
12.2
12.2
11.4
11.8
14.2
13.9
13.6
13.0
12.5
13.1
12.3
12.4

The average wind speed value in September is 11.8 mph It makes September one of the least windy months of the year.

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
2.2
4.3
6.5
8.7
10.8
13.0
15.2
17.3
5.5
6.0
6.9
11.8
12.6
10.6
10.3
8.4
6.8
6.2
5.7
5.5
6.0
6.9
9.0
11.8
12.6
10.6
10.3
8.4
6.8
6.2
5.7

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 9.0.

Best time for vacation in Cascais

Sunniest months:
August 27 days
July 26 days
September 23 days
Warmest months:
August 76.8 °F
July 75.5 °F
September 75.1 °F
Warmest sea temp:
September 64.8 °F
October 64.4 °F
August 63.9 °F
Coldest months:
January 59.2 °F
February 59.4 °F
December 61.2 °F
Rainiest months:
November 5 days
October 4 days
December 4 days
Windiest months:
July 13.9 mph
August 13.5 mph
June 13.1 mph

Cascais on a weather map

Leaflet | Tiles © Esri
Places in Portugal:
Name
°F
+57°F
+59°F
+57°F
+57°F
+54°F
+61°F
+59°F
+57°F
+48°F
+59°F
+55°F
+59°F
+61°F
24 Hours Forecast
Cascais
Local time: 09:51
March 17, monday
1200
59°F
N
14 mph
1500
59°F
NW
12 mph
1800
55°F
NW
9 mph
2100
55°F
SW
9 mph
March 18, tuesday
0000
55°F
S
7 mph
0300
54°F
SE
7 mph
0600
55°F
SE
7 mph
0900
57°F
E
7 mph
Units of measurement: °C / °F