World Resorts Portugal Sintra Weather

Sintra sea water temperature

Current sea water temperature:
+57.0°F
Minimum sea water temperature in March: 61.2°F
Maximum sea water temperature in March: 55.2°F
Average sea water temperature in March: 57.8°F

Sea water temperature for the last 10 days:

March 17 57.0°F March 12 56.7°F
March 16 56.7°F March 11 56.5°F
March 15 56.7°F March 10 56.3°F
March 14 56.8°F March 9 56.7°F
March 13 56.7°F March 8 56.7°F

When is the warmest sea in Sintra?

Based on the data about daily sea water temperature for the last three years the warmest sea in Sintra was noticed in September, October and August.

Monthly Sea Temperatures in Sintra, °F

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 62.6°F. The highest and lowest sea temperatures during the month were 66.0°F and 60.3°F.

Sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 62.9°F. The highest and lowest sea temperatures during the month were 65.3°F and 60.3°F.

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 64.7°F. The highest and lowest sea temperatures during the month were 66.7°F and 63.0°F.

Best time for vacation in Sintra

Sunniest months:
August 27 days
July 26 days
September 23 days
Warmest months:
August 78.5 °F
July 77.7 °F
September 76.6 °F
Warmest sea temp:
September 64.6 °F
October 64.2 °F
August 63.9 °F
Coldest months:
January 58.7 °F
February 59.4 °F
December 60.6 °F
Rainiest months:
March 4 days
November 4 days
January 4 days
Windiest months:
July 12.9 mph
August 12.4 mph
June 12.1 mph

Sintra on a weather map

Sintra
+55°F
NW 15 mph
Feels like: +52°F
Precip.: 0%
Places in Portugal:
Name
°F
+59°F
+59°F
+57°F
+57°F
+55°F
+59°F
+54°F
+59°F
+57°F
+54°F
+55°F
+55°F
+59°F
+59°F
24 Hours Forecast
Sintra
Local time: 08:21
March 17, tuesday
0900
55°F
NW
15 mph
1200
61°F
NW
16 mph
1500
61°F
N
21 mph
1800
57°F
N
20 mph
2100
55°F
N
19 mph
March 18, wednesday
0000
55°F
N
19 mph
0300
55°F
N
22 mph
0600
55°F
NW
20 mph
Units of measurement: °C / °F