Measurements:
°C
°F
CURRENT WEATHER
22:18
Terceira Island
56°F
SE 9 mph
Feels like: 52°F
Precip: 0%
World Resorts Portugal Terceira Island Weather

7 Day Weather Forecast

12.15
mon
DAY
58°F
SE 19 mph
precip
87%
NIGHT
56°F
E 8 mph
precip
0%
12.16
tue
DAY
60°F
NE 17 mph
precip
68%
NIGHT
62°F
NE 16 mph
precip
100%
12.17
wed
DAY
64°F
NE 22 mph
precip
61%
NIGHT
58°F
SE 24 mph
precip
100%
12.18
thu
DAY
56°F
SE 17 mph
precip
89%
NIGHT
54°F
SE 7 mph
precip
0%
12.19
fri
DAY
56°F
E 7 mph
precip
83%
NIGHT
56°F
NE 9 mph
precip
23%
12.20
sat
DAY
58°F
N 9 mph
precip
100%
NIGHT
58°F
N 12 mph
precip
100%
12.21
sun
DAY
60°F
N 17 mph
precip
100%
NIGHT
60°F
E 13 mph
precip
70%

Terceira Island Sea Water Temperature in December, °F

Select Year: 2025 2024 2023

The average sea surface temperature in December 2025 for Terceira Island was 17.7°F. The maximum and minimum values were 17.1°F and 18.3°F respectively.

Terceira Island on the Weather Map

Best Time to Visit Terceira Island
The most sunny months:
August 9 days
July 7 days
June 7 days
The most warm months:
August 78.2 °F
September 75.8 °F
July 75.5 °F
Warmest sea temperature:
August 76.6 °F
September 75.4 °F
July 73.0 °F
The most cold months:
February 61.0 °F
March 61.1 °F
January 61.9 °F
The most rainy months:
December 5 days
February 4 days
January 4 days
The most windy months:
December 17 mph
January 16 mph
March 16 mph
more details