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

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

October, like September, in St. John's is another fresh autumn month, with temperature in the range of an average low of 3.9°C (39°F) and an average high of 10.8°C (51.4°F).

Temperature

In October, the average high-temperature in St. John's, Canada, drops, from an enjoyable 16.5°C (61.7°F) in September, to a fresh 10.8°C (51.4°F). In October, in St. John's, the average low-temperature is 3.9°C (39°F).

Rainfall

The month with the most rainfall in St. John's is October when the rain falls for 18.1 days and typically aggregates up to 153.7mm (6.1") of precipitation.

Snowfall

January through June, October through December are months with snowfall in St. John's, Canada. October is the first month it typically snows in St. John's. Throughout October, in the average 1.4 snowfall days, it receives 24mm (0.9") 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

In October, the average sea temperature in St. John's is 8.3°C (46.9°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 St. John's, the average length of the day in October is 10.8h.

Sunshine

In October, the average sunshine in St. John's is 3.9h.

UV index

In October, the average daily maximum UV index in St. John's is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

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

The average high-temperature, in October, is 10.8°C (51.4°F), while the average low-temperature is 3.9°C (39°F).

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

In October, the rain falls for 18.1 days. Throughout October, 153.7mm (6.1") of precipitation is accumulated.

What is the wettest month in St. John's?

The month with the most rainfall is October when the rain falls for 18.1 days and typically aggregates up to 153.7mm (6.1") of precipitation.

When does it start to snow in St. John's?

October is the first month it typically snows in St. John's, Canada. Throughout October, in the average 1.4 snowfall days, it receives 24mm (0.9") of snow.

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

In October, the average sea temperature in St. John's, Canada, is 8.3°C (46.9°F). Swimming in 8.3°C (46.9°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

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

In October, the average length of the day in St. John's, Canada, is 10.8h.

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

In October, the average sunshine in St. John's is 3.9h.

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

The average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in October - St. John
  • Average high temperature in October: 10.8°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 October: 3.9°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 October - St. John
  • Average rainfall in October: 153.7mm

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 October - St. John
  • Average rainfall days in October: 18.1 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 October - St. John
  • Average snowfall in October: 24mm

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

Average snowfall days in October - St. John
  • Average snowfall days in October: 1.4 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 October - St. John
  • Average sea temperature in October: 8.3°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 October / Average sunshine in October - St. John
  • Average daylight in October: 10.8h

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 October: 3.9h

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

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