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St. John's weather in December

Weather in St. John's: December

Average day temperature: 35.5°F
Average night temperature: 34.0°F
Sea water temperature: 38.6°F
Number of sunny days: 2 days
Day length: 8.4 - 8.7 hours
Number of rainy days: 3 days
Precipitation totals: 1.8 in.
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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
9
18
27
36
45
54
63
Day temperature   
Night temperature

The highest day temperature during December of 2024 was 52°F. At the same time the lowest night temperature was 22°F. Daily and nightly averages during December were 35.7°F and 33.9°F.

Sea water temperature in St. John's in December, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
30
33
36
39
42
45
48

The average sea water temperature in December of 2024 was 39.4°F. The highest and lowest sea temperatures during the month were 42.3°F and 35.2°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
6%
23%
71%

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

Precipitation total in December, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.5
1.0
1.5
2.0
2.4
2.9
3.4
2.4
1.5
1.6
2.4
1.3
2.0
1.8
1.5
2.8
2.3
2.5
1.8
2.4
1.5
1.6
2.4
1.3
2.0
1.8
1.5
2.8
2.3
2.5

Precipitation total value in St. John's in December is 1.8 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
2.8
5.6
8.5
11.3
14.1
16.9
19.7
14.9
12.8
12.3
10.9
10.1
10.7
11.7
13.9
15.3
16.5
15.0
15.0
14.9
12.8
12.3
10.9
10.1
10.7
11.7
13.9
15.3
16.5
15.0

The average wind speed value in December is 15.0 mph It makes December one of the most windy months of the year.

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.2
2.3
3.5
4.7
5.8
7.0
8.2
2.5
4.5
5.1
6.4
6.8
5.9
5.4
3.8
3.3
2.4
2.1
2.3
2.5
4.5
5.1
6.4
6.8
5.9
5.4
3.8
3.3
2.4
2.1

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: 2.3.

Best time for vacation in St. John's

Sunniest months:
August 8 days
October 7 days
September 7 days
Warmest months:
August 66.0 °F
July 64.1 °F
September 60.4 °F
Warmest sea temp:
August 59.5 °F
September 57.2 °F
July 53.0 °F
Coldest months:
February 27.8 °F
January 30.2 °F
March 31.7 °F
Rainiest months:
November 5 days
May 4 days
June 4 days
Windiest months:
February 16.5 mph
March 15.3 mph
January 15.0 mph

St. John's on a weather map

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Places in Canada:
Name
°F
Vancouver
+45°F
Victoria
+46°F
Winnipeg
+39°F
Halifax
+45°F
Yellowknife
+16°F
Quebec
+37°F
Montreal
+36°F
Nanaimo
+48°F
Niagara Falls
+41°F
Prince Edward Island
+41°F
Ottawa
+36°F
Saint John
+45°F
St. John's
+48°F
Sydney
+50°F
Toronto
+39°F
all places
24 Hours Forecast
St. John's
Local time: 16:29
April 01, tuesday
1800
48°F
NE
24 mph
2100
48°F
NE
24 mph
April 02, wednesday
0000
41°F
NE
21 mph
0300
37°F
E
19 mph
0600
32°F
E
21 mph
0900
32°F
E
21 mph
1200
32°F
E
24 mph
1500
32°F
E
27 mph
Units of measurement: °C / °F