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

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

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).

Temperature

In March, the average high-temperature in St. John's, Canada, is essentially the same as in February - a cold 1°C (33.8°F). In St. John's, Canada, the average low-temperature is -6.1°C (21°F).

Rainfall

In St. John's, in March, during 11 rainfall days, 84.8mm (3.3") of precipitation is typically accumulated. Throughout the year, in St. John's, there are 162.7 rainfall days, and 1206.5mm (47.5") of precipitation is accumulated.

Snowfall

Months with snowfall in St. John's are January through June, October through December. In St. John's, snow falls for 13.3 days, with typically accumulated 573mm (22.6") of snow. Throughout the year, in St. John's, there are 79 snowfall days, and 3349.4mm (131.9") of snow is accumulated.

Sea temperature

March is the month with the coldest seawater in St. John's, with an average sea temperature of -0.4°C (31.3°F).
Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

Daylight

In St. John's, the average length of the day in March is 11.9h.

Sunshine

In St. John's, the average sunshine is 3.5h.

UV index

The average daily maximum UV index in March in St. John's is 3. A UV Index reading of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for average individuals.
Note: In March, the average maximum UV index of 3 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

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

In St. John's, in March, the average high-temperature is 1°C (33.8°F), and the average low-temperature is -6.1°C (21°F).

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

In St. John's, Canada, in March, during 11 rainfall days, 84.8mm (3.3") of precipitation is typically accumulated.

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

In St. John's, in March, during 13.3 snowfall days, 573mm (22.6") of snow is typically accumulated.

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, Canada.

How cold is the water in March in St. John's?

In March, the average sea temperature in St. John's, Canada, is -0.4°C (31.3°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 March in St. John's?

The average length of the day in March in St. John's, Canada, is 11.9h.

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

In St. John's, the average sunshine in March is 3.5h.

How high is the UV index in March in St. John's?

In March, the average daily maximum UV index in St. John's is 3. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.
Average temperature in March - St. John
  • Average high temperature in March: 1°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 March: -6.1°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 March - St. John
  • Average rainfall in March: 84.8mm

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 March - St. John
  • Average rainfall days in March: 11 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 March - St. John
  • Average snowfall in March: 573mm

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

Average snowfall days in March - St. John
  • Average snowfall days in March: 13.3 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 March - St. John
  • Average sea temperature in March: -0.4°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 March / Average sunshine in March - St. John
  • Average daylight in March: 11.9h

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 March: 3.5h

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

Average UV index in March - St. John
  • Average UV index in March: 3

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).