St. John's Weather Forecast
St. John's weather: Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
St. John's is a city in Newfoundland and Labrador. St. John's is known for Jellybean Row and Signal Hill. It has a population of about 110.000.
The best time to visit St. John's is July, August and September. The climate is subarctic. January, February and November tend to be the least comfortable months. July is the warmest month with average highs near 69°F, while February is the coldest with lows near 23°F.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
See the St. John's forecast by time range
Climate in St. John's month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 32° | 24° | 5,3 in | ★☆☆☆☆ |
| February | 32° | 23° | 6,3 in | ★☆☆☆☆ |
| March | 38° | 25° | 5,7 in | ★★☆☆☆ |
| April | 40° | 30° | 5,5 in | ★★☆☆☆ |
| May | 49° | 37° | 3,3 in | ★★★☆☆ |
| June | 60° | 47° | 4,8 in | ★★★☆☆ |
| July | 69° | 56° | 4,3 in | ★★★★☆ |
| August | 69° | 57° | 3,4 in | ★★★★☆ |
| September | 62° | 53° | 2,2 in | ★★★★☆ |
| October | 53° | 44° | 4,1 in | ★★★☆☆ |
| November | 44° | 37° | 8,5 in | ★☆☆☆☆ |
| December | 38° | 28° | 5,4 in | ★★☆☆☆ |
Climate type: Subarctic. Source: Open-Meteo archive (ERA5).
Weather map for St. John's
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Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Best time to visit St. John's
Go in July, August and September. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and November - expect the least comfortable mix of heat, cold or rain.
Explore St. John's
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Frequently asked questions
Where is St. John's?
St. John's is a city in Newfoundland and Labrador. Its coordinates are 47.5615, -52.7126. It lies in North America.
When is the best time to visit St. John's?
July, August and September offer the most comfortable conditions in St. John's, which has a subarctic climate. January, February and November are usually the hardest months for outdoor plans.
How many people live in St. John's?
St. John's has a population of approximately 110.000.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-supported) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 23, 2026 UTC. Live blocks refresh every 15 minutes; climate averages monthly.
