Terceira Island Weather: December
 |
Average Day Temperature: | 63.2°F |
|
Average Night Temperature: | 60.8°F |
|
Sea Water Temperature: | 64.5°F |
|
Number of Sunny Days: | 5 days |
| Sunshine Hours: | 9.5 - 9.7 hours | |
|
Number of Rainy Days: | 5 days |
| Precipitation Totals: | 3.3 in | |
| detailed information | ||
forecast
| Terceira Island |
Temperature
| Terceira Island |
Air Temperature in December, °F
The highest day temperature in December 2025 was 66°F. The lowest night temperature was 52°F. The average values for day and night temperatures during December were 60.7°F и 58.4°F respectivly.
Terceira Island Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for Terceira Island was 64.4°F. The maximum and minimum values were 62.8°F and 66.6°F respectively.
Most of the days in December are gloomy but you can also expect sunny days.
Precipitation Totals in December, in
Precipitation total in December for Terceira Island is 3.3 in. It makes december the most rainy month of the year.
The average wind speed in December is 17.0 mph. It makes December the most windy month of the year for Terceira Island.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Terceira Island in December is 4.1 hours.
Terceira Island on the Weather Map
| Albufeira |  |
+52 |
| Algarve | |
+54 |
| Cascais |  |
+58 |
| Faro | |
+54 |
| Funchal |  |
+54 |
| Lagos | |
+56 |
| Lisbon | |
+58 |
| Madeira | |
+54 |
| Ponta Delgada | |
+62 |
| Portimao |  |
+54 |
| Porto |  |
+52 |
| Porto Santo Island | |
+62 |
| Quarteira | |
+52 |
| Sao Miguel | |
+62 |
| Terceira Island | |
+60 |
| 0900 |  |
60°F | N 14 mph |
| 1200 |  |
62°F | N 17 mph |
| 1500 | |
62°F | N 22 mph |
| 1800 |  |
62°F | N 25 mph |
| 2100 |  |
62°F | N 24 mph |
| 0000 | |
62°F | NE 23 mph |
| 0300 | |
64°F | NE 22 mph |
| 0600 | |
64°F | NE 22 mph |