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

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

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).

Temperature

In June, the average high-temperature in St. John's slightly increases, from a cool 11.1°C (52°F) in May, to a moderate 15.8°C (60.4°F). In St. John's, the average low-temperature is 5.9°C (42.6°F).

Rainfall

In June, in St. John's, the rain falls for 14.7 days. Throughout June, 97.5mm (3.8") of precipitation is accumulated. Throughout the year, in St. John's, there are 162.7 rainfall days, and 1206.5mm (47.5") of precipitation is accumulated.

Snowfall

January through June, October through December are months with snowfall in St. John's. June is the last month it regularly snows in St. John's. During 0.1 snowfall days, in June, St. John's aggregates 0.4mm (0") 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 June, the average water temperature is 6.4°C (43.5°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

June has the longest days of the year in St. John's, with an average of 15.9h of daylight.

Sunshine

The average sunshine in June in St. John's is 6.6h.

UV index

June and July, with an average maximum UV index of 7, are months with the highest UV index in St. John's. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 7 in June transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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 June in St. John's?

In St. John's, in June, the average high-temperature is 15.8°C (60.4°F), and the average low-temperature is 5.9°C (42.6°F).

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

In St. John's, Canada, during June, the rain falls for 14.7 days and regularly aggregates up to 97.5mm (3.8") of precipitation.

What is the last month it snows in St. John's?

June is the last month it regularly snows in St. John's. During 0.1 snowfall days, in June, St. John's aggregates 0.4mm (0") of snow.

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

In St. John's, Canada, the average seawater temperature in June is 6.4°C (43.5°F). Swimming in 6.4°C (43.5°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

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.

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

In June, the average length of the day in St. John's is 15.9h.

How many hours of sunshine does St. John's have in June?

In St. John's, Canada, the average sunshine in June is 6.6h.

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.

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

The average daily maximum UV index in June is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in June - St. John
  • Average high temperature in June: 15.8°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 June: 5.9°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 June - St. John
  • Average rainfall in June: 97.5mm

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 June - St. John
  • Average rainfall days in June: 14.7 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 June - St. John
  • Average snowfall in June: 0.4mm

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

Average snowfall days in June - St. John
  • Average snowfall days in June: 0.1 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 June - St. John
  • Average sea temperature in June: 6.4°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 June / Average sunshine in June - St. John
  • Average daylight in June: 15.9h

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 June: 6.6h

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

Average UV index in June - St. John
  • Average UV index in June: 7

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).