World Resorts Portugal Sintra Weather

Sintra weather in December

Weather in Sintra: December

Average day temperature: 60.8°F
Average night temperature: 54.9°F
Sea water temperature: 60.2°F
Number of sunny days: 14 days
Day length: 9.4 - 9.7 hours
Number of rainy days: 3 days
Precipitation totals: 2.1 in.

Air temperature in December, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
11
22
33
44
55
66
77
88
Day temperature   
Night temperature

The highest day temperature during December of 2024 was 68°F. At the same time the lowest night temperature was 45°F. Day and night temperature averages during December were 58.7°F and 52.6°F.

Sea water temperature in Sintra in December, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
55
57
59
61
63
65
67
69

The average sea water temperature in December of 2024 was 61.5°F. The highest and lowest sea temperatures during the month were 63.9°F and 59.9°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
42%
29%
29%

Mostly all days in December are sunny but cloudy days are also possible.

Precipitation total in December, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.4
0.9
1.3
1.7
2.2
2.6
3.0
2.5
1.4
1.3
2.4
2.1
1.4
1.9
2.5
2.5
1.4
1.3
2.4
2.1
1.4
1.9

Precipitation total value in Sintra in December is 2.5 in. Other months of the year show relatively similar values.

Wind speed in December, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
2.2
4.5
6.7
8.9
11.2
13.4
15.6
11.0
10.5
10.8
13.0
12.7
12.5
11.9
11.4
12.1
11.2
11.2
11.0
11.0
10.5
10.8
13.0
12.7
12.5
11.9
11.4
12.1
11.2
11.2

The average wind speed value in December is 11.0 mph It makes December one of the least windy months of the year.

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
2.2
4.3
6.5
8.6
10.8
13.0
15.1
6.1
6.9
9.1
11.9
12.6
10.7
10.3
8.3
6.8
6.2
5.7
5.7
6.1
6.9
9.1
11.9
12.6
10.7
10.3
8.3
6.8
6.2
5.7

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 5.7.

Best time for vacation in Sintra

Sunniest months:
August 27 days
July 25 days
September 23 days
Warmest months:
August 78.6 °F
July 77.8 °F
September 76.9 °F
Warmest sea temp:
September 64.7 °F
October 64.3 °F
August 63.8 °F
Coldest months:
January 58.9 °F
February 59.6 °F
December 60.8 °F
Rainiest months:
March 4 days
November 4 days
January 4 days
Windiest months:
July 12.8 mph
August 12.5 mph
June 12.2 mph

Sintra on a weather map

Leaflet | Tiles © Esri
Places in Portugal:
Name
°F
+57°F
+59°F
+57°F
+57°F
+54°F
+61°F
+57°F
+57°F
+48°F
+57°F
+55°F
+59°F
+61°F
24 Hours Forecast
Sintra
Local time: 07:51
March 17, monday
0900
57°F
N
9 mph
1200
59°F
N
13 mph
1500
57°F
NW
12 mph
1800
57°F
NW
6 mph
2100
55°F
SW
7 mph
March 18, tuesday
0000
54°F
SW
6 mph
0300
54°F
SE
2 mph
0600
50°F
E
1 mph
Units of measurement: °C / °F