Measurements:
°C
°F
CURRENT WEATHER
23:52
Lisbon
72°F
SE 9 mph
Feels like: 72°F
Precip: 27%
World Resorts Portugal Lisbon Weather

7 Day Weather Forecast

09.08
tue
DAY
82°F
S 11 mph
precip
10%
NIGHT
72°F
SE 9 mph
precip
27%
09.09
wed
DAY
78°F
SE 15 mph
precip
1%
NIGHT
66°F
S 11 mph
precip
19%
09.10
thu
DAY
84°F
S 6 mph
precip
1%
NIGHT
70°F
S 9 mph
precip
4%
09.11
fri
DAY
86°F
NW 1 mph
precip
0%
NIGHT
72°F
S 7 mph
precip
7%
09.12
sat
DAY
90°F
W 1 mph
precip
0%
NIGHT
84°F
S 6 mph
precip
0%
09.13
sun
DAY
94°F
W 4 mph
precip
0%
NIGHT
90°F
NW 4 mph
precip
0%
09.14
mon
DAY
92°F
N 6 mph
precip
0%
NIGHT
84°F
SE 2 mph
precip
1%

Lisbon Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Lisbon was 18.8°F. The maximum and minimum values were 17.2°F and 20.7°F respectively.

Lisbon on the Weather Map

Best Time to Visit Lisbon
The most sunny months:
August 28 days
July 26 days
September 23 days
The most warm months:
August 85.2 °F
July 84.2 °F
September 81.7 °F
Warmest sea temperature:
August 69.2 °F
July 68.9 °F
September 68.5 °F
The most cold months:
January 59.4 °F
February 60.8 °F
December 61.6 °F
The most rainy months:
March 4 days
November 4 days
April 4 days
The most windy months:
July 10 mph
June 10 mph
August 10 mph
more details