20.09
sun
sun
Day
82°F
W 6 mph
Precip.
0%
0%
Night
79°F
SW 4 mph
Precip.
1%
1%
21.09
mon
mon
Day
82°F
W 5 mph
Precip.
1%
1%
Night
77°F
S 6 mph
Precip.
2%
2%
22.09
tue
tue
Day
84°F
NW 3 mph
Precip.
0%
0%
Night
77°F
S 3 mph
Precip.
1%
1%
23.09
wed
wed
Day
88°F
NW 2 mph
Precip.
0%
0%
Night
75°F
S 3 mph
Precip.
2%
2%
24.09
thu
thu
Day
86°F
E 4 mph
Precip.
1%
1%
Night
72°F
S 6 mph
Precip.
8%
8%
25.09
fri
fri
Day
86°F
E 4 mph
Precip.
0%
0%
Night
75°F
S 5 mph
Precip.
1%
1%
26.09
sat
sat
Day
84°F
SE 6 mph
Precip.
0%
0%
Night
72°F
SE 5 mph
Precip.
3%
3%
27.09
sun
sun
Day
75°F
E 7 mph
Precip.
4%
4%
Night
68°F
SE 6 mph
Precip.
16%
16%
28.09
mon
mon
Day
72°F
S 8 mph
Precip.
12%
12%
Night
63°F
S 10 mph
Precip.
20%
20%
29.09
tue
tue
Day
68°F
S 10 mph
Precip.
12%
12%
Night
63°F
S 7 mph
Precip.
22%
22%
30.09
wed
wed
Day
70°F
E 2 mph
Precip.
8%
8%
Night
63°F
SE 4 mph
Precip.
11%
11%
01.10
thu
thu
Day
72°F
NW 2 mph
Precip.
1%
1%
Night
68°F
NW 2 mph
Precip.
3%
3%
02.10
fri
fri
Day
75°F
N 5 mph
Precip.
7%
7%
Night
70°F
NE 2 mph
Precip.
14%
14%
03.10
sat
sat
Day
73°F
N 9 mph
Precip.
8%
8%
Night
70°F
NE 5 mph
Precip.
40%
40%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 68.5°F. The highest and lowest sea temperatures during the month were 70.7°F and 66.6°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 65.1°F. The highest and lowest sea temperatures during the month were 66.6°F and 63.3°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: 20:08
September 20, sunday
2100
79°F
S
9 mph
9 mph
September 21, monday
0000
79°F
SW
4 mph
4 mph
0300
75°F
W
4 mph
4 mph
0600
72°F
W
6 mph
6 mph
0900
72°F
W
7 mph
7 mph
1200
82°F
W
5 mph
5 mph
1500
90°F
NE
6 mph
6 mph
1800
82°F
SE
11 mph
11 mph
