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Saint John weather in December

Weather in Saint John: December

Average day temperature: 33.1°F
Average night temperature: 29.3°F
Sea water temperature: 46.4°F
Number of sunny days: 6 days
Day length: 8.7 - 9.0 hours
Number of rainy days: 3 days
Precipitation totals: 1.9 in.

Air temperature in December, °F

Show year:
2023
2022
2021

The highest day temperature during December of 2023 was 56°F. At the same time the lowest night temperature was 14°F. Day and night temperature averages during December were 36.1°F and 31.8°F.

Sea water temperature in Saint John in December, °F

Show year:
2023
2022
2021

The average sea water temperature in December of 2023 was 45.2°F. The highest and lowest sea temperatures during the month were 47.8°F and 42.3°F.

Sunny, partly cloudy and cloudy days

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

Precipitation total in December, in.

Precipitation total value in Saint John in December is 1.9 in. Other months of the year show relatively similar values.

Wind speed in December, mph

The average wind speed value in December is 8.5 mph It makes December one of the most windy months of the year.

Average sunny hours

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: 3.5.

Best time for vacation in Saint John

Sunniest months:
September 10 days
August 9 days
October 9 days
Warmest months:
July 73.7 °F
August 72.5 °F
June 68.5 °F
Warmest sea temp:
August 59.6 °F
September 58.3 °F
July 57.2 °F
Coldest months:
January 25.3 °F
February 25.8 °F
December 33.1 °F
Rainiest months:
July 4 days
March 3 days
October 3 days
Windiest months:
March 8.8 mph
December 8.5 mph
February 8.3 mph

Saint John on a weather map

Saint John
+41°F
SW 12 mph
Feels like: +34°F
Precip.: 0%
Places in Canada:
Name
°F
+43°F
+46°F
+30°F
+43°F
+30°F
-11°F
+37°F
+41°F
+43°F
+41°F
+41°F
+45°F
+41°F
+39°F
24 Hours Forecast
Saint John
Local time: 10:19
November 21, thursday
1200
43°F
SW
10 mph
1500
43°F
SW
12 mph
1800
43°F
SW
13 mph
2100
43°F
SW
11 mph
November 22, friday
0000
43°F
SW
10 mph
0300
45°F
SW
12 mph
0600
46°F
W
12 mph
0900
46°F
W
12 mph
Units of measurement: °C / °F