Climate averages 1991–2020
St. John's weather
in March.
A cold month with heavy precipitation: the 10th warmest and the joint 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cold month in St. John's: daytime highs average 1.1°C and nights cool to about -4.3°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 105 mm of precipitation on roughly 13 days, which makes March a month with heavy precipitation (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 52 min on an average March day.
The nearest other city in this atlas is Sydney, Canada (590 km away). In March its highs average 1.3°C, about as warm as St. John's, with 108 mm of precipitation.
Among the 86 cities listed in Canada, St. John's ranks 75th of 86 for the warmest March highs and 70th of 86 for the driest March (precipitation, lowest first). The mean March high of those 86 cities is 3.8°C; St. John's is 2.6°C cooler than that mean.
From March to April, average highs rise by 3.6°C to 4.7°C, and monthly precipitation falls from 105 mm to 87 mm.
The annual picture
March 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, selected | 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 | 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
March in nearby cities
- Sydney, Canada in MarchCanada · 590 kmHigh 1.3°C · Low -5.0°C · 108 mm precipitation
- Dartmouth in MarchCanada · 896 kmHigh 3.0°C · Low -4.0°C · 108 mm rain
- Halifax in MarchCanada · 898 kmHigh 2.5°C · Low -3.7°C · 108 mm rain
- Moncton in MarchCanada · 933 kmHigh 1.8°C · Low -6.9°C · 98 mm precipitation
- Saint John in MarchCanada · 1053 kmHigh 1.9°C · Low -4.9°C · 112 mm precipitation
- Saguenay in MarchCanada · 1366 kmHigh -1.4°C · Low -10.9°C · 70 mm precipitation
- Québec in MarchCanada · 1398 kmHigh 0.8°C · Low -8.2°C · 81 mm precipitation
- Sherbrooke in MarchCanada · 1485 kmHigh 2.2°C · Low -7.6°C · 79 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.