Newfoundland and Labrador climate
World Climates covers 1 place in Newfoundland and Labrador. St. Johns has a subarctic climate (Köppen Dfc).
Climate of St. Johns at a glance
The year average in St. Johns is 5 °C42 °F. The warmest month is August, with an average high of 17 °C63 °F. The coldest is February, with an average low of −4 °C24 °F. About 1,300 mm51 in of precipitation falls in a year. December is the wettest month and June the driest. By our comfort score, the best months to visit are August.
Frequently asked questions
How many places in Newfoundland and Labrador does this site cover?
World Climates has climate data for one place in Newfoundland and Labrador: St. Johns. Its page has monthly averages for temperature, rainfall, humidity and daylight.
What is the warmest month in St. Johns?
August is the warmest month, with an average high of 17 °C63 °F. February is the coldest, with an average low of −4 °C24 °F.
When does it rain the most in St. Johns?
December is the wettest month, with about 140 mm5.5 in of precipitation. The yearly total is about 1,300 mm51 in.
When is the best time to visit St. Johns?
By our comfort score, the most comfortable months are August. The score is based on long-term averages, not on a forecast.
Climate of every place in Newfoundland and Labrador
| Place | Year | Max high | Min low | Precip. |
|---|---|---|---|---|
| St. Johns | 5 | 17 | −4 | 1,300 |
Year = annual mean temperature; max high = average high of the warmest month; min low = average low of the coldest month; precip. = annual total. Temperatures in °C°F, precipitation in mminches. Sorted by population.
Data: NASA POWER climatology 2001–2025 (MERRA-2 reanalysis, CERES satellite data) — grid-cell averages, not station records. Sources and method.