Climate averages 1991–2020
St. John's weather
in October.
A cool, wet month: the 5th warmest and the joint 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a cool month in St. John's: daytime highs average 11.1°C and nights cool to about 6.5°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 105 mm of rain on roughly 13 days, which makes October a wet month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 54 min on an average October day.
The nearest other city in this atlas is Sydney, Canada (590 km away). In October its highs average 12.6°C, 1.5°C warmer than St. John's, with 131 mm of rain.
Among the 86 cities listed in Canada, St. John's ranks 73rd of 86 for the warmest October highs and 56th of 86 for the driest October (rainfall, lowest first). The mean October high of those 86 cities is 12.7°C; St. John's is 1.6°C cooler than that mean.
From October to November, average highs fall by 4.2°C to 6.8°C, and monthly rainfall rises from 105 mm to 110 mm.
The annual picture
October in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
St. John's climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.1°C-5.8°C | -5.8°C | 124 | 14.4 | 8.99 h |
| February | -0.5°C-6.4°C | -6.4°C | 103 | 12.9 | 10.210 h |
| March | 1.1°C-4.3°C | -4.3°C | 105 | 12.8 | 11.912 h |
| April | 4.7°C-0.6°C | -0.6°C | 87 | 12.2 | 13.614 h |
| May | 9.1°C2.6°C | 2.6°C | 72 | 11.1 | 15.115 h |
| June | 13.7°C7.0°C | 7.0°C | 66 | 10.6 | 15.916 h |
| July | 18.9°C12.2°C | 12.2°C | 78 | 10.5 | 15.616 h |
| August | 19.6°C13.7°C | 13.7°C | 80 | 10.4 | 14.314 h |
| September | 16.3°C10.7°C | 10.7°C | 93 | 10.7 | 12.613 h |
| October, selected | 11.1°C6.5°C | 6.5°C | 105 | 12.5 | 10.911 h |
| November | 6.8°C2.3°C | 2.3°C | 110 | 13.6 | 9.49 h |
| December | 2.5°C-2.0°C | -2.0°C | 127 | 15.3 | 8.59 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Sydney, Canada in OctoberCanada · 590 kmHigh 12.6°C · Low 8.2°C · 131 mm rain
- Dartmouth in OctoberCanada · 896 kmHigh 13.5°C · Low 8.0°C · 124 mm rain
- Halifax in OctoberCanada · 898 kmHigh 13.2°C · Low 8.6°C · 124 mm rain
- Moncton in OctoberCanada · 933 kmHigh 12.6°C · Low 5.5°C · 98 mm rain
- Saint John in OctoberCanada · 1053 kmHigh 12.3°C · Low 6.6°C · 133 mm rain
- Saguenay in OctoberCanada · 1366 kmHigh 9.5°C · Low 2.3°C · 119 mm rain
- Québec in OctoberCanada · 1398 kmHigh 11.3°C · Low 4.1°C · 125 mm rain
- Sherbrooke in OctoberCanada · 1485 kmHigh 12.1°C · Low 4.6°C · 119 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for St. John's) is explained once on the St. John's year overview and on the Sources, method and limits page.