World Resorts Portugal Terceira Island Weather

Terceira Island sea water temperature

Current sea water temperature:
+66.9°F
Minimum sea water temperature in June: 71.2°F
Maximum sea water temperature in June: 62.1°F
Average sea water temperature in June: 66.3°F

Sea water temperature for the last 10 days:

June 26 66.9°F June 21 67.1°F
June 25 66.9°F June 20 67.6°F
June 24 66.9°F June 19 67.6°F
June 23 67.3°F June 18 67.5°F
June 22 67.1°F June 17 67.3°F

When is the warmest sea in Terceira Island?

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

Monthly Sea Temperatures in Terceira Island, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 74.3°F. The highest and lowest sea temperatures during the month were 75.9°F and 72.5°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 72.6°F. The highest and lowest sea temperatures during the month were 74.1°F and 70.7°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 70.8°F. The highest and lowest sea temperatures during the month were 72.7°F and 68.4°F.

Best time for vacation in Terceira Island

Sunniest months:
August 9 days
June 7 days
July 7 days
Warmest months:
August 75.4 °F
September 73.3 °F
July 73.0 °F
Warmest sea temp:
August 73.9 °F
September 72.9 °F
July 70.7 °F
Coldest months:
March 59.8 °F
February 59.8 °F
January 60.5 °F
Rainiest months:
December 5 days
February 4 days
January 4 days
Windiest months:
December 17.0 mph
January 16.8 mph
February 16.1 mph

Terceira Island on a weather map

Terceira Island
+64°F
SE 11 mph
Feels like: +64°F
Precip.: 7%
Places in Portugal:
Name
°F
+73°F
+72°F
+70°F
+73°F
+73°F
+73°F
+70°F
+66°F
+75°F
+70°F
+66°F
+73°F
+72°F
+70°F
24 Hours Forecast
Terceira Island
Local time: 11:04
June 26, friday
1200
64°F
SE
11 mph
1500
66°F
SE
12 mph
1800
66°F
SE
11 mph
2100
64°F
E
9 mph
June 27, saturday
0000
64°F
E
9 mph
0300
64°F
NE
8 mph
0600
64°F
E
9 mph
0900
66°F
E
9 mph
Units of measurement: °C / °F