Measurements:
°C
°F
CURRENT WEATHER
00:17
Sintra
54°F
NW 2 mph
Feels like: 54°F
Precip: 0%
World Resorts Portugal Sintra Weather

14 Day Weather Forecast

12.18
thu
DAY
58°F
N 13 mph
precip
0%
NIGHT
58°F
N 14 mph
precip
100%
12.19
fri
DAY
56°F
S 20 mph
precip
65%
NIGHT
54°F
S 14 mph
precip
0%
12.20
sat
DAY
58°F
E 11 mph
precip
100%
NIGHT
54°F
E 19 mph
precip
100%
12.21
sun
DAY
52°F
SE 13 mph
precip
77%
NIGHT
54°F
E 18 mph
precip
100%
12.22
mon
DAY
54°F
SE 27 mph
precip
100%
NIGHT
54°F
S 23 mph
precip
100%
12.23
tue
DAY
60°F
S 17 mph
precip
82%
NIGHT
54°F
SE 13 mph
precip
100%
12.24
wed
DAY
56°F
SE 16 mph
precip
100%
NIGHT
48°F
SW 9 mph
precip
100%
12.25
thu
DAY
54°F
S 14 mph
precip
0%
NIGHT
54°F
S 17 mph
precip
100%
12.26
fri
DAY
54°F
S 19 mph
precip
0%
NIGHT
52°F
S 21 mph
precip
100%
12.27
sat
DAY
50°F
S 13 mph
precip
61%
NIGHT
42°F
S 9 mph
precip
0%
12.28
sun
DAY
50°F
S 12 mph
precip
0%
NIGHT
44°F
W 6 mph
precip
0%
12.29
mon
DAY
44°F
W 15 mph
precip
0%
NIGHT
42°F
W 9 mph
precip
0%
12.30
tue
DAY
44°F
W 14 mph
precip
0%
NIGHT
44°F
W 11 mph
precip
0%

Sintra Sea Water Temperature in December, °F

Select Year: 2025 2024 2023

The average sea surface temperature in December 2025 for Sintra was 61.7°F. The maximum and minimum values were 61.2°F and 62.0°F respectively.

Sintra on the Weather Map

Best Time to Visit Sintra
The most sunny months:
August 27 days
July 26 days
September 23 days
The most warm months:
August 81.7 °F
July 80.8 °F
September 79.6 °F
Warmest sea temperature:
September 66.2 °F
October 65.7 °F
August 65.4 °F
The most cold months:
January 59.9 °F
February 60.6 °F
December 62.0 °F
The most rainy months:
March 4 days
November 4 days
January 4 days
The most windy months:
July 12 mph
August 12 mph
June 12 mph
more details
Portugal Resorts:
NAME
F°
Albufeira +54
Algarve +56
Cascais +54
Faro +56
Funchal +60
Lagos +54
Lisbon +52
Madeira +60
Ponta Delgada +64
Portimao +52
Porto +52
Porto Santo Island +68
Quarteira +54
Sao Miguel +64
Terceira Island +60
all resorts
24 Hours Weather Forecast
Sintra
Local time: 00:17
18 dec, thursday
0300 52°F
NW
5 mph
0600 52°F
NW
4 mph
0900 52°F
NW
7 mph
1200 58°F
N
13 mph
1500 60°F
N
15 mph
1800 58°F
N
16 mph
2100 58°F
N
16 mph
19 dec, friday
0000 58°F
N
14 mph