St. John's weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: May – August
What is the weather like in St. John's in December?
In December, St. John's is freezing cold: daytime highs average 3 °C, and nights often drop below freezing (−2 °C). The sea averages 2.9 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. Precipitation, often as snow, falls on about 15 days, totalling 125 mm. Snow falls on about 7 days. It is often windy, with gusts of around 33 km/h. All in all, December is not an ideal month for a holiday in St. John's.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 6 | 4 | 5 |
| Day | 7° | 3° | 1° |
| Night | 3° | −2° | −5° |
| Sea | 6° | 3° | 1° |
| Sun | 3 h | 2 h | 3 h |
| Rain days | 14 | 15 | 15 |
More details for December
- Daylight
- 8 h 28 min07:42 – 16:10
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 33 km/haverage daily peakAll months
- Cloud cover
- 81 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 7 days1 cm or more of fresh snowAll months
- Time zone
- UTC−3:30America/St_Johns
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 20 %21 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- Warm jacket
- Hat, scarf & gloves
- Rain jacket or umbrella
- Windproof jacket
St. John's in December: quick answers
Is St. John's hot in December?
No. In December, St. John's is freezing cold: daytime highs average 3 °C and nights drop to about −2 °C.
Can you swim in St. John's in December?
Only if you don't mind cold water: in December the sea averages just 2.9 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in St. John's in December?
It rains often – on about 15 days, adding up to 125 mm.
St. John's month by month
The whole year in St. John'sAll destinations: CanadaWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences