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

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

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).

Temperature

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.

Rainfall

In St. John's, in July, it is raining for 13.6 days, with typically 91.6mm (3.6") of accumulated 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

July through September are months without snowfall in St. John's.

Sea temperature

In St. John's, the average water temperature is 10.9°C (51.6°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

In July, the average length of the day in St. John's is 15.5h.

Sunshine

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

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 value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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.

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.

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

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

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

In July, in St. John's, Canada, the rain falls for 13.6 days. Throughout July, 91.6mm (3.6") of precipitation is accumulated.

Does it snow in St. John's in July?

In July, in St. John's, it doesn't snow. June is the latest month when it typically snows.

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

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

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

In St. John's, Canada, in July, the average water temperature is 10.9°C (51.6°F). Swimming in 10.9°C (51.6°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

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

The average length of the day in July in St. John's, Canada, is 15.5h.

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

July has the most sunshine of the year, with an average of 7h of sunshine.

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

The average sunshine in July in St. John's is 7h.

When is the highest UV index in St. John's?

Months with the highest UV index are June and July, with an average maximum UV index of 7.

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

In St. John's, Canada, the average daily maximum UV index in July is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays.
Average temperature in July - St. John
  • Average high temperature in July: 20.7°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 July: 10.9°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 July - St. John
  • Average rainfall in July: 91.6mm

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 July - St. John
  • Average rainfall days in July: 13.6 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 July - St. John
  • Average snowfall in July: 0mm

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

Average snowfall days in July - St. John
  • Average snowfall days in July: 0 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 July - St. John
  • Average sea temperature in July: 10.9°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 July / Average sunshine in July - St. John
  • Average daylight in July: 15.5h

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 July: 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 July - St. John
  • Average UV index in July: 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).