Measurements:
°C
°F
CURRENT WEATHER
03:38
Sintra
70°F
N 16 mph
Feels like: 70°F
Precip: 28%
World Resorts Portugal Sintra Weather

7 Day Weather Forecast

09.29
tue
DAY
70°F
N 24 mph
precip
14%
NIGHT
68°F
N 16 mph
precip
94%
09.30
wed
DAY
66°F
S 8 mph
precip
21%
NIGHT
64°F
S 15 mph
precip
15%
10.01
thu
DAY
64°F
S 21 mph
precip
22%
NIGHT
64°F
S 22 mph
precip
11%
10.02
fri
DAY
64°F
S 10 mph
precip
26%
NIGHT
64°F
S 9 mph
precip
29%
10.03
sat
DAY
66°F
E 5 mph
precip
9%
NIGHT
66°F
S 7 mph
precip
28%
10.04
sun
DAY
68°F
NE 9 mph
precip
14%
NIGHT
66°F
S 15 mph
precip
17%
10.05
mon
DAY
64°F
S 20 mph
precip
20%
NIGHT
64°F
S 27 mph
precip
9%

Sintra Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Sintra was 17.8°F. The maximum and minimum values were 16.6°F and 18.9°F respectively.

Sintra on the Weather Map

Best Time to Visit Sintra
The most sunny months:
August 27 days
July 26 days
September 23 days
The most warm months:
August 81.2 °F
July 80.6 °F
September 79.1 °F
Warmest sea temperature:
September 66.2 °F
October 65.7 °F
August 65.6 °F
The most cold months:
January 59.7 °F
February 60.4 °F
December 61.8 °F
The most rainy months:
March 4 days
November 4 days
January 4 days
The most windy months:
July 12 mph
August 12 mph
June 12 mph
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