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

January 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).

Temperature

In January, the average high-temperature in St. John's is relatively the same as in December - a subzero cold -0.8°C (30.6°F). In St. John's, the average low-temperature is -8.2°C (17.2°F).

Rainfall

In St. John's, during January, the rain falls for 9.3 days and regularly aggregates up to 66mm (2.6") of precipitation. In St. John's, during the entire year, the rain falls for 162.7 days and collects up to 1206.5mm (47.5") of precipitation.

Snowfall

January through June, October through December are months with snowfall in St. John's. January is the month with the most snowfall in St. John's. Snow falls for 18.3 days and accumulates 887mm (34.9") of snow.

Sea temperature

In St. John's, the average water temperature is 0.9°C (33.6°F).
Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

Daylight

In St. John's, Canada, the average length of the day is 9h.

Sunshine

In St. John's, Canada, the average sunshine is 2.1h.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in St. John's. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 1 interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in January in St. John's?

The average high-temperature, in January, in St. John's, Canada, is -0.8°C (30.6°F), while the average low-temperature is -8.2°C (17.2°F).

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

In St. John's, in January, it is raining for 9.3 days, with typically 66mm (2.6") of accumulated precipitation.

How much does it snow in St. John's in January?

In St. John's, Canada, in January, snow falls for 18.3 days, with typically accumulated 887mm (34.9") of snow.

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

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

What is the water temperature in January in St. John's?

In St. John's, Canada, in January, the average water temperature is 0.9°C (33.6°F). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

What is the average length of the day in January in St. John's?

In St. John's, the average length of the day in January is 9h.

How long on average sun shines in January in St. John's?

In January, the average sunshine in St. John's, Canada, is 2.1h.

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, Canada.

What is the UV index reading in January in St. John's?

In St. John's, Canada, the average daily maximum UV index in January is 1. A UV Index of 2, and less, symbolizes a low health threat from unsafe exposure to the Sun's UV rays.
Average temperature in January - St. John
  • Average high temperature in January: -0.8°C

The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is February (-1.1°C).

  • Average low temperature in January: -8.2°C

The month with the highest average low temperature is August (11.6°C).
The coldest month (with the lowest average low temperature) is February (-8.6°C).

Average rainfall in January - St. John
  • Average rainfall in January: 66mm

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 in January - St. John
  • Average rainfall days in January: 9.3 days

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 in January - St. John
  • Average snowfall in January: 887mm

The month with the highest snowfall is January (887mm).
Months with the lowest snowfall are July, August and September (0mm).

Average snowfall days in January - St. John
  • Average snowfall days in January: 18.3 days

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 in January - St. John
  • Average sea temperature in January: 0.9°C

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 in January / Average sunshine in January - St. John
  • Average daylight in January: 9h

The month with the longest days is June (Average daylight: 15.9h).
The month with shortest days is December (Average daylight: 8.5h).

  • Average sunshine in January: 2.1h

The month with most sunshine is July (Average sunshine: 7h).
The month with least sunshine is December (Average sunshine: 2h).

Average UV index in January - St. John
  • Average UV index in January: 1

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).