Climate averages 1991–2020

St. John's weather
in January.

A freezing month with heavy precipitation: the 11th warmest and the 11th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high -0.1°C Daytime mean, January

Average low -5.8°C Night-time mean, January

Precipitation 124 mm 14 days with ≥1 mm

Daylight 9 h Sunrise to sunset, per day

January is a freezing month in St. John's: daytime highs average -0.1°C and nights cool to about -5.8°C. By daytime temperature it is the 11th warmest of the 12 months.

Expect about 124 mm of precipitation on roughly 14 days, which makes January a month with heavy precipitation (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 55 min on an average January day.

The nearest other city in this atlas is Sydney, Canada (590 km away). In January its highs average -0.7°C, 0.7°C cooler than St. John's, with 118 mm of precipitation.

Among the 86 cities listed in Canada, St. John's ranks 15th of 86 for the warmest January highs and 73rd of 86 for the driest January (precipitation, lowest first). The mean January high of those 86 cities is -2.3°C; St. John's is 2.3°C warmer than that mean.

From January to February, average highs fall by 0.4°C to -0.5°C, and monthly precipitation falls from 124 mm to 103 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly precipitation

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

St. John's climate table

1991–2020

Monthly climate averages for St. John's, 1991–2020
Month	Average highHigh / low	Average low	Precipitation mm/month	Wet days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	-0.1°C-5.8°C	-5.8°C	124	14.4	8.99 h
February	-0.5°C-6.4°C	-6.4°C	103	12.9	10.210 h
March	1.1°C-4.3°C	-4.3°C	105	12.8	11.912 h
April	4.7°C-0.6°C	-0.6°C	87	12.2	13.614 h
May	9.1°C2.6°C	2.6°C	72	11.1	15.115 h
June	13.7°C7.0°C	7.0°C	66	10.6	15.916 h
July	18.9°C12.2°C	12.2°C	78	10.5	15.616 h
August	19.6°C13.7°C	13.7°C	80	10.4	14.314 h
September	16.3°C10.7°C	10.7°C	93	10.7	12.613 h
October	11.1°C6.5°C	6.5°C	105	12.5	10.911 h
November	6.8°C2.3°C	2.3°C	110	13.6	9.49 h
December	2.5°C-2.0°C	-2.0°C	127	15.3	8.59 h

Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

January in nearby cities

Distance from St. John's

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for St. John's) is explained once on the St. John's year overview and on the Sources, method and limits page.