15.09
tue
tue
Day
81°F
SE 11 mph
Precip.
1%
1%
Night
66°F
S 17 mph
Precip.
12%
12%
16.09
wed
wed
Day
73°F
S 18 mph
Precip.
2%
2%
Night
66°F
S 14 mph
Precip.
6%
6%
17.09
thu
thu
Day
81°F
S 8 mph
Precip.
1%
1%
Night
66°F
S 13 mph
Precip.
13%
13%
18.09
fri
fri
Day
81°F
S 5 mph
Precip.
4%
4%
Night
72°F
S 6 mph
Precip.
1%
1%
19.09
sat
sat
Day
82°F
W 6 mph
Precip.
3%
3%
Night
77°F
NW 6 mph
Precip.
1%
1%
20.09
sun
sun
Day
82°F
NW 2 mph
Precip.
1%
1%
Night
75°F
S 4 mph
Precip.
1%
1%
21.09
mon
mon
Day
81°F
NW 7 mph
Precip.
1%
1%
Night
75°F
NW 5 mph
Precip.
1%
1%
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 65.9°F. The highest and lowest sea temperatures during the month were 69.3°F and 63.0°F.
Air temperature in Lisbon, °F
Precipitation total in Lisbon, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Lisbon
Lisbon on a weather map
Places in Portugal:
Name
°F
24 Hours Forecast
Lisbon
Local time: 00:54
September 15, tuesday
0300
73°F
S
4 mph
4 mph
0600
70°F
S
4 mph
4 mph
0900
72°F
S
7 mph
7 mph
1200
81°F
SE
11 mph
11 mph
1500
82°F
S
16 mph
16 mph
1800
77°F
S
17 mph
17 mph
2100
68°F
S
17 mph
17 mph
September 16, wednesday
0000
66°F
S
17 mph
17 mph
