Measurements:
°C
°F
CURRENT WEATHER
00:26
Terceira Island
72°F
SE 4 mph
Feels like: 72°F
Precip: 30%
World Resorts Portugal Terceira Island Weather

7 Day Weather Forecast

09.09
wed
DAY
80°F
SE 5 mph
precip
6%
NIGHT
72°F
E 2 mph
precip
15%
09.10
thu
DAY
80°F
NW 1 mph
precip
5%
NIGHT
72°F
N 3 mph
precip
14%
09.11
fri
DAY
80°F
N 11 mph
precip
15%
NIGHT
72°F
N 6 mph
precip
18%
09.12
sat
DAY
80°F
NE 2 mph
precip
6%
NIGHT
72°F
NW 2 mph
precip
15%
09.13
sun
DAY
78°F
W 2 mph
precip
18%
NIGHT
70°F
NW 4 mph
precip
16%
09.14
mon
DAY
76°F
SE 7 mph
precip
25%
NIGHT
70°F
SW 10 mph
precip
47%
09.15
tue
DAY
68°F
SW 10 mph
precip
18%
NIGHT
66°F
W 6 mph
precip
22%

Terceira Island Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Terceira Island was 22.6°F. The maximum and minimum values were 21.5°F and 23.4°F respectively.

Terceira Island on the Weather Map

Best Time to Visit Terceira Island
The most sunny months:
August 8 days
September 7 days
June 7 days
The most warm months:
August 78.1 °F
September 75.8 °F
July 75.3 °F
Warmest sea temperature:
August 76.5 °F
September 75.4 °F
July 73.0 °F
The most cold months:
March 60.9 °F
February 60.9 °F
January 61.7 °F
The most rainy months:
December 5 days
February 4 days
January 4 days
The most windy months:
December 17 mph
January 17 mph
February 16 mph
more details