What’s the climate like in St. John's?
The current climate of St. John's features average monthly temperatures ranging from highs of 21°C during the day to lows of 0°C. The average yearly temperature is around 10°C. At night, temperatures in the colder months average around -7°C and in the warmer months around 13°C.
The highest temperature recorded in St. John's in recent years was 30°C in July 2022. The lowest daytime temperature recorded was -14°C in January 2014.
On average, St. John's gets 2085 mm of precipitation each year. Of this, about 139 cm is snowfall. For comparison, London gets 701 mm of precipitation each year.
Curious about the climate in other parts of Canada? Check out the weather and climate in places like Vancouver, Toronto, Niagara Falls, or have a look at other destinations in Canada.
Best time to visit St. John's?
The best time to visit St. John's for pleasant to warm weather is June through August. There might be some rain during this period, but the temperatures are just right for exploring St. John's.
Climate Table of St. John's
The climate table of St. John's shows the average temperatures, precipitation, snow, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp. max (°C) | 1 | 0 | 1 | 6 | 10 | 16 | 21 | 21 | 17 | 12 | 7 | 2 |
| Temp. min (°C) | -6 | -7 | -5 | -1 | 2 | 7 | 13 | 14 | 9 | 6 | 1 | -3 |
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| Precipitation (mm) | 217 | 136 | 138 | 166 | 88 | 95 | 121 | 113 | 238 | 148 | 319 | 306 |
| Snow (cm) | 35 | 26 | 23 | 13 | 1,5 | 0,1 | 0 | 0 | 0 | 0,4 | 7,6 | 31 |
| UV Index | 2 | 4 | 5 | 6 | 6 | 7 | 6 | 6 | 4 | 2 | 3 | 2 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 10°C
- Highest temperature: 21°C in July and August
- Lowest temperature: 0°C in February
- Precipitation*: 2085 mm per year, averaging 174 mm per month
- Snowfall: 139 cm per year
- Driest months: 88 mm in May, 95 mm in June and 113 mm in August
- Wettest months: 319 mm in November, 306 mm in December and 238 mm in September
*Precipitation is measured as a combination of rain, snow, and hail
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Table of Contents
Average Temperature per Month in St. John's
This graph shows the average maximum temperatures per month in St. John's, Canada. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in St. John's
This graph shows how much precipitation St. John's, Canada, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average Snowfall per Month in St. John's
This graph shows how much snow St. John's, Canada, gets on average per month. The amount of snowfall is measured in centimetres and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in St. John's
This graph shows the average UV index per month in St. John's, Canada. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in St. John's
This graph shows the average yearly temperature in St. John's, Canada. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in St. John's
This chart shows the total yearly precipitation in St. John's, Canada, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in St. John's
This chart shows the total yearly snowfall in St. John's, Canada, over the past few years. The total yearly snowfall, measured in centimetres, is the sum of all the snow that fell in the twelve months of that year.
Weather experiences in St. John's
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Average Weather in St. John's by Month
Click on a month below to see detailed weather info for St. John's. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
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