St. John's Climate by Month
St. John's, Newfoundland and Labrador, Canada
Mild summers and freezing winters, with rain spread through the year.
The climate in St. John's is one of mild summers and freezing winters, with rain spread through the year. Expect highs of 71°F (22°C) in July and 32°F (0°C) in January, with the coldest nights (February) near 18°F (-8°C). About 61 in (1537 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 71°F(22°C)
- Average high, July
- Coldest nights
- 18°F(-8°C)
- Average low, February
- Rain per year
- 61 in(1537 mm)
- No clear rainy season
- Humidity
- 77%
- Sunniest: June
Best and worst months in St. John's
Best for weatherJuly and August are the best time for weather in St. John's: highs near 71°F (22°C) and about 4.2 in (107 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; January is the coldest, with highs of only 32°F (0°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in July.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
St. John's weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 32°F(0°C) | 19°F(-7°C) | 6.0 in(152 mm) | 86% | 1.1 |
| FebFebruary | 32°F(0°C) | 18°F(-8°C) | 5.0 in(128 mm) | 88% | 1.8 |
| MarMarch | 36°F(2°C) | 22°F(-5°C) | 5.1 in(130 mm) | 74% | 2.9 |
| AprApril | 44°F(6°C) | 30°F(-1°C) | 4.9 in(124 mm) | 68% | 4.0 |
| MayMay | 53°F(12°C) | 37°F(3°C) | 4.2 in(107 mm) | 69% | 4.7 |
| JunJune | 62°F(17°C) | 44°F(7°C) | 3.9 in(99 mm) | 72% | 5.1 |
| JulJulyBest | 71°F(22°C) | 53°F(12°C) | 4.3 in(108 mm) | 73% | 5.1 |
| AugAugustBest | 71°F(22°C) | 55°F(13°C) | 4.1 in(105 mm) | 76% | 4.4 |
| SepSeptember | 64°F(18°C) | 48°F(9°C) | 4.6 in(118 mm) | 78% | 3.5 |
| OctOctober | 54°F(12°C) | 40°F(5°C) | 6.1 in(154 mm) | 81% | 2.0 |
| NovNovember | 45°F(7°C) | 33°F(1°C) | 5.7 in(145 mm) | 74% | 1.1 |
| DecDecember | 37°F(3°C) | 25°F(-4°C) | 6.6 in(167 mm) | 86% | 0.8 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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