Weather in St. John's in December 2025
Average weather
Average temperature in St. John's in December
The temperature in December is +4°C on average, with a range between a maximum of +13°C during the day and a minimum of -7°C at night.
The average maximum temperature goes down 5% by the end of the month, compared with the beginning of the month, from +3°C to +2°C.
Is St. John's warm or cold in December?
St. John's is typically cool in December.
Maximum temperatures go down compared to the previous month from +7°C to +3°C. The minimum temperature also goes down from +2°C to -2°C.
Pack a sweater and a jacket as there will be cooler temperatures.
Take a look at how December is compared to other months in St. John's:
Climate in St. John's in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +7°C | +3°C | 0°C | ||||
| Min. temperature | ||||||
| -9°C | -17°C | -27°C | ||||
| Max. temperature | ||||||
| +20°C | +19°C | +15°C | ||||
| Rainfall | ||||||
| 101 mm | 67 mm | 59 mm | ||||
| Wind | ||||||
| 6 m/s | 6 m/s | 6 m/s | ||||
| Humidity | ||||||
| 82% | 82% | 82% | ||||
| Air pressure | ||||||
| 1012 HPa | 1010 HPa | 1008 HPa | ||||
| Sunny days | ||||||
| 0 | 0 | 0 | ||||
| Cloudy days | ||||||
| 10 | 10 | 10 | ||||
| Rainy days | ||||||
| 14 | 6 | 3 | ||||
| Snowy days | ||||||
| 5 | 14 | 18 | ||||
December weather is still as ok as in November. It’s getting colder in December. From +7°C in the day, the average maximum temperature lowers to +3°C. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 101 mm to 67 mm. Humidity levels don’t change as the month goes on, averaging around 82%. The average wind speed doesn’t change much during December, staying around 6 m/s. The amount of sunny days stay about the same, averaging 0 sunny days during the month.
January brings much the same weather, it remains ok.
Wind
The average wind speed is 7 m/s getting up to 14 m/s which is quite strong. The wind will cause branches to move and ground debris to fly around.
The average wind speed in St. John's is gradually increasing during December, going from 4 m/s to 6 m/s over the course of the month.
Rain
Snow
Here’s how December is compared with other months in the amount of snow, total mm:
How was the weather last December in St. John's?
Climate Change over Years
The climate in St. John's in December has not changed much over the last 43 years.
The average temperature was the lowest in 1985 (+7°C) and the highest in 2022 (+11°C). The driest year was 1989 with only 563 mm of rainfall, and the wettest year was 2023 with 7230 mm.
FAQ
Is December a good time to visit St. John's?
Can you sunbathe in St. John's in December?
Is St. John's rainy in December?
Is it sunny in St. John's in December?
Other cities in Canada
Monthly weather in St. John's
Source of the data
For this page, we’ve looked at the typical weather in St. John's, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
