Current Sea Water Temperature:
+64.0°F
| Maximum Sea Water Temperature in December: | 68.4°F |
| Minimum Sea Water Temperature in December: | 61.0°F |
| Average water temperature in December: | 64.5°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| December 18 | 64.0°F | December 13 | 64.4°F |
| December 17 | 64.2°F | December 12 | 64.6°F |
| December 16 | 64.0°F | December 11 | 65.0°F |
| December 15 | 64.2°F | December 10 | 65.2°F |
| December 14 | 64.4°F | December 09 | 65.2°F |
When is the Warmest Sea for Terceira Island?
According to our data for the last three years for Terceira Island the highest average sea water temperature was in August, September and July.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Terceira Island was 77.0°F. The maximum and minimum values were 75.0°F and 78.8°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Terceira Island was 75.2°F. The maximum and minimum values were 73.0°F and 76.8°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Terceira Island was 73.1°F. The maximum and minimum values were 70.4°F and 75.2°F respectively.
Portugal Resorts:
NAME
F°
| Albufeira |  |
+60 |
| Algarve |  |
+62 |
| Cascais | |
+62 |
| Faro | |
+62 |
| Funchal | |
+56 |
| Lagos |  |
+60 |
| Lisbon | |
+58 |
| Madeira | |
+56 |
| Ponta Delgada |  |
+58 |
| Portimao | |
+60 |
| Porto | |
+56 |
| Porto Santo Island | |
+66 |
| Quarteira | |
+60 |
| Sao Miguel | |
+58 |
| Terceira Island | |
+54 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Terceira Island
Local time: 11:28
18 dec, thursday
| 1200 |  |
54°F | SE 16 mph |
| 1500 | |
54°F | SE 14 mph |
| 1800 | |
54°F | SE 12 mph |
| 2100 | |
54°F | SE 8 mph |
19 dec, friday
| 0000 | |
54°F | SE 5 mph |
| 0300 |  |
54°F | SE 6 mph |
| 0600 | |
52°F | E 7 mph |
| 0900 |  |
54°F | E 9 mph |