St. John's
Canada
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
St. John's, Canada

January, like December, is another subzero cold winter month in St. John's, Canada, with average temperature varying between -8.2°C (17.2°F) and -0.8°C (30.6°F). In January, the average high-temperature in St. Weather in January »

The last month of the winter, February, is also a subzero cold month in St. John's, with temperature in the range of an average low of -8.6°C (16.5°F) and an average high of -1.1°C (30°F). With an average high-temperature of -1.1°C (30°F) and an average low-temperature of -8.6°C (16.5°F), February is the coldest month in St. Weather in February »

The first month of the spring, March, is a wintry month in St. John's, with average temperature ranging between min -6.1°C (21°F) and max 1°C (33.8°F). In March, the average high-temperature in St. Weather in March »

April, the same as March, is a wintry spring month in St. John's, with temperature in the range of an average high of 5.6°C (42.1°F) and an average low of -1.9°C (28.6°F). In April, the average high-temperature in St. Weather in April »

May, the last month of the spring, in St. John's, is a fresh month, with average temperature fluctuating between 11.1°C (52°F) and 1.7°C (35.1°F). In St. John's, the average high-temperature increases, from a cold 5.6°C (42.1°F) in April, to a cool 11.1°C (52°F). Weather in May »

June, the first month of the summer, in St. John's, is a mild month, with average temperature ranging between min 5.9°C (42.6°F) and max 15.8°C (60.4°F). In June, the average high-temperature in St. Weather in June »

July in St. John's is a pleasant summer month, with average temperature fluctuating between 20.7°C (69.3°F) and 10.9°C (51.6°F). With an average high-temperature of 20.7°C (69.3°F) and an average low-temperature of 10.9°C (51.6°F), July is the warmest month in St. Weather in July »

The last month of the summer, August, is also an agreeable month in St. John's, with average temperature fluctuating between 11.6°C (52.9°F) and 20.5°C (68.9°F). In St. John's, the average high-temperature is essentially the same as in July - a still pleasant 20.5°C (68.9°F). Weather in August »

The first month of the autumn, September, is still a comfortable month in St. John's, with average temperature varying between 16.5°C (61.7°F) and 8.2°C (46.8°F). In St. John's, the average high-temperature marginally drops, from an agreeable 20.5°C (68.9°F) in August, to an enjoyable 16.5°C (61.7°F). Weather in September »

October, like September, in St. John's is another fresh autumn month, with temperature in the range of an average low of 3.9°C (39°F) and an average high of 10.8°C (51.4°F). In October, the average high-temperature in St. Weather in October »

November, the last month of the autumn, in St. John's, is also a frosty month, with average temperature fluctuating between -0.3°C (31.5°F) and 6.4°C (43.5°F). In November, the average high-temperature in St. Weather in November »

The first month of the winter, December, is still a cold month in St. John's, with temperature in the range of an average low of -4.7°C (23.5°F) and an average high of 1.8°C (35.2°F). In St. Weather in December »

How much does it rain in St. John's?

Throughout the year, there are 162.7 rainfall days, and 1206.5mm (47.5") of precipitation is accumulated.

When does it snow in St. John's?

Months with snowfall are January through June, October through December.

How many days does it snow in St. John's?

In St. John's, during the entire year, snow falls for 79 days, and aggregates up to 3349.4mm (131.9") of snow.

When does it snow the most in St. John's?

The month with the most snowfall is January when snow falls for 18.3 days and typically aggregates up to 887mm (34.9") of snow.

What are the months with the lowest UV index in St. John's?

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in St. John's.

What is the coldest month in St. John's?

With an average high-temperature of -1.1°C (30°F) and an average low-temperature of -8.6°C (16.5°F), February is the coldest month in St. John's.

What is the driest month in St. John's?

The month with the least rainfall in St. John's is February when the rain falls for 8.6 days and typically collects 61.6mm (2.4") of precipitation.

When is the sea coldest in St. John's?

With an average sea temperature of -0.4°C (31.3°F), March is the month with the coldest seawater in St. John's.

When are the longest days in St. John's?

June has the longest days of the year, with an average of 15.9h of daylight.

What are the months with the highest UV index in St. John's?

June and July, with an average maximum UV index of 7, are months with the highest UV index in St. John's, Canada.

What is the warmest month in St. John's?

With an average high-temperature of 20.7°C (69.3°F) and an average low-temperature of 10.9°C (51.6°F), July is the warmest month in St. John's.

When it does not snow in St. John's?

In St. John's snow does not fall in July through September.

What month has the most sunshine in St. John's?

July has the most sunshine of the year in St. John's, with an average of 7h of sunshine.

What is the month with the warmest sea water in St. John's?

The month with the warmest seawater is August, with an average sea temperature of 13.9°C (57°F).

What is the wettest month in St. John's?

The month with the most rainfall in St. John's is October when the rain falls for 18.1 days and typically aggregates up to 153.7mm (6.1") of precipitation.

What is the month with the shortest days in St. John's?

The month with the shortest days in St. John's, Canada, is December, with an average of 8.5h of daylight.

What is the month with the least sunshine in St. John's?

December has the least sunshine of the year, with an average of 2h of sunshine.
Average temperature - St. John
Average rainfall - St. John

The wettest month (with the highest rainfall) is October (153.7mm).
The driest month (with the lowest rainfall) is February (61.6mm).

Average rainfall days - St. John

The month with the highest number of rainy days is October (18.1 days).
The month with the lowest number of rainy days is February (8.6 days).

Average snowfall - St. John
Average snowfall days - St. John

The month with the highest number of snowfall days is January (18.3 days).
Months with the lowest number of snowfall days are July, August and September (0 days).

Average sea temperature - St. John

The best month for swimming (with the highest average sea temperature) is August (13.9°C).
The coldest month (with the lowest average sea temperature) is March (-0.4°C).

Average daylight / Average sunshine - St. John
Average UV index - St. John