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

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

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).

Temperature

In April, the average high-temperature in St. John's, Canada, slightly increases, from 1°C (33.8°F) in March, to a still cold 5.6°C (42.1°F). In St. John's, the average low-temperature is -1.9°C (28.6°F).

Rainfall

In St. John's, Canada, in April, it is raining for 13.9 days, with typically 96.1mm (3.8") of accumulated precipitation. In St. John's, Canada, during the entire year, the rain falls for 162.7 days and collects up to 1206.5mm (47.5") of precipitation.

Snowfall

Months with snowfall in St. John's are January through June, October through December. In St. John's, during April, snow falls for 7 days and regularly aggregates up to 253mm (10") of snow. In St. John's, during the entire year, snow falls for 79 days, and aggregates up to 3349.4mm (131.9") of snow.

Sea temperature

In St. John's, in April, the average water temperature is 0.2°C (32.4°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

The average length of the day in St. John's is 13.7h.

Sunshine

In St. John's, the average sunshine is 4.7h.

UV index

The average daily maximum UV index in April in St. John's is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

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

In April, in St. John's, the average high-temperature is 5.6°C (42.1°F), and the average low-temperature is -1.9°C (28.6°F).

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

In St. John's, in April, during 13.9 rainfall days, 96.1mm (3.8") of precipitation is typically accumulated.

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

In April, it is snowing for 7 days. Throughout April, 253mm (10") of snow is accumulated.

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

In St. John's, the average seawater temperature in April is 0.2°C (32.4°F). 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.

How many hours of daylight does St. John's have in April?

In St. John's, the average length of the day in April is 13.7h.

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

In St. John's, the average sunshine in April is 4.7h.

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

The average daily maximum UV index in April in St. John's, Canada, is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to the UV radiation.
Average temperature in April - St. John
  • Average high temperature in April: 5.6°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 April: -1.9°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 April - St. John
  • Average rainfall in April: 96.1mm

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 April - St. John
  • Average rainfall days in April: 13.9 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 April - St. John
  • Average snowfall in April: 253mm

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

Average snowfall days in April - St. John
  • Average snowfall days in April: 7 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 April - St. John
  • Average sea temperature in April: 0.2°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 April / Average sunshine in April - St. John
  • Average daylight in April: 13.7h

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 April: 4.7h

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

Average UV index in April - St. John
  • Average UV index in April: 4

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).