The highest day temperature in January 2026 was 50°F. The lowest night temperature was 7°F. The average values for day and night temperatures during January were 27.9°F и 24.9°F respectivly.

The average sea surface temperature in January 2026 for St. John's was 32.4°F. The maximum and minimum values were 30.2°F and 34.4°F respectively.

Most of the days in January are gloomy but you can also expect sunny days.

Precipitation total in January for St. John's is 2.6 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 15.3 mph. It makes January one of the most windy months of the year for St. John's.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for St. John's in January is 2.1 hours.