World Resorts Portugal Terceira Island Weather

Terceira Island sea water temperature

Current sea water temperature:
+61.3°F
Minimum sea water temperature in January: 64.6°F
Maximum sea water temperature in January: 58.1°F
Average sea water temperature in January: 61.4°F

Sea water temperature for the last 10 days:

January 12 61.3°F January 7 61.2°F
January 11 61.0°F January 6 61.3°F
January 10 61.2°F January 5 61.3°F
January 9 61.3°F January 4 61.2°F
January 8 61.2°F January 3 61.5°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
July 7 days
June 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:
February 59.9 °F
March 60.0 °F
January 60.7 °F
Rainiest months:
December 5 days
February 4 days
January 4 days
Windiest months:
December 17.0 mph
January 16.7 mph
March 15.9 mph

Terceira Island on a weather map

Terceira Island
+55°F
SE 17 mph
Feels like: +50°F
Precip.: 70%
Places in Portugal:
Name
°F
+57°F
+59°F
+57°F
+59°F
+59°F
+57°F
+52°F
+57°F
+59°F
+54°F
+57°F
+59°F
+52°F
24 Hours Forecast
Terceira Island
Local time: 23:51
January 13, tuesday
0000
55°F
SE
17 mph
0300
55°F
SE
13 mph
0600
54°F
SE
11 mph
0900
54°F
SE
8 mph
1200
55°F
E
4 mph
1500
57°F
E
9 mph
1800
57°F
NE
9 mph
2100
55°F
E
9 mph
Units of measurement: °C / °F