Measurements:
°C
°F
Sintra
60°F
NE 27 mph
Feels like: 54°F
Precip: 100%
World Resorts Portugal Sintra Weather

Sintra Sea Water Temperature

Current Sea Water Temperature:
+57.4°F
Maximum Sea Water Temperature in February: 63.0°F
Minimum Sea Water Temperature in February: 55.0°F
Average water temperature in February: 58.5°F

Sea Water Temperature for the Last 10 Days:

February 04 57.4°F January 30 58.0°F
February 03 57.6°F January 29 58.0°F
February 02 57.6°F January 28 58.2°F
February 01 57.4°F January 27 57.6°F
January 31 57.6°F January 26 57.4°F

When is the Warmest Sea for Sintra?

According to our data for the last three years for Sintra the highest average sea water temperature was in September, October and August.

Average Water Temperature by Month, °F

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Sintra was 64.0°F. The maximum and minimum values were 61.4°F and 67.8°F respectively.

Sea Water Temperature in October

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Sintra was 64.3°F. The maximum and minimum values were 61.4°F and 67.0°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Sintra was 66.3°F. The maximum and minimum values were 64.4°F and 68.6°F respectively.

Best Time to Visit Sintra
The most sunny months:
August 27 days
July 26 days
September 23 days
The most warm months:
August 81.7 °F
July 80.8 °F
September 79.6 °F
Warmest sea temperature:
September 66.2 °F
October 65.7 °F
August 65.4 °F
The most cold months:
January 59.7 °F
February 60.6 °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

Sintra on the Weather Map

Portugal Resorts:
NAME
Albufeira +62
Algarve +62
Cascais +60
Faro +62
Funchal +64
Lagos +62
Lisbon +60
Madeira +64
Ponta Delgada +58
Portimao +62
Porto +52
Porto Santo Island +66
Sao Miguel +58
Setubal +62
Sintra +60
24 Hours Weather Forecast
Sintra
Local time: 20:05
04 feb, wednesday
2100 60°F
NE
27 mph
05 feb, thursday
0000 58°F
NE
27 mph
0300 58°F
NE
30 mph
0600 58°F
NE
19 mph
0900 58°F
E
30 mph
1200 58°F
E
29 mph
1500 58°F
E
27 mph
1800 54°F
E
24 mph