September weather forecast
Prince Rupert, Canada

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Weather in September

September, the first month of the autumn in Prince Rupert, is still a mild month, with an average temperature fluctuating between 13.5°C (56.3°F) and 10.4°C (50.7°F).

Temperature

During September, Prince Rupert observes a subtle ascent to a still moderate 13.5°C (56.3°F) from August's 15.3°C (59.5°F) in the average high-temperature. In September, Prince Rupert's nights cool slightly to a consistent average temperature of 10.4°C (50.7°F).

Humidity

In Prince Rupert, Canada, the average relative humidity in September is 84%.

Rainfall

In Prince Rupert, during September, the rain falls for 19.4 days and regularly aggregates up to 154mm (6.06") of precipitation. Throughout the year, there are 218.8 rainfall days, and 1574mm (61.97") of precipitation is accumulated.

Snowfall

In Prince Rupert, Canada, snow does not fall in May through October.

Sea temperature

In September, the average sea temperature in Prince Rupert is 12°C (53.6°F).
Note: With an efficient thermal swimsuit, one can navigate 12°C (53.6°F) even if it's colder than 10°C (50°F); otherwise, rapid cold shock and breathlessness might set in. Barely wading at 13°C (55.4°F) feels chilly.

Daylight

In September, the average length of the day in Prince Rupert is 12h and 40min.
On the first day of the month, sunrise is at 6:50 am and sunset at 8:31 pm. On the last day of September, sunrise is at 7:43 am and sunset at 7:18 pm PDT.

Sunshine

In September, the average sunshine is 6.6h.

UV index

In Prince Rupert, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 3 in September leads to these recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What is the usual temperature for Prince Rupert in September?

Prince Rupert in September has an average high-temperature of 13.5°C (56.3°F) and an average low-temperature of 10.4°C (50.7°F).

What is the average humidity in September in Prince Rupert?

In Prince Rupert, Canada, the average relative humidity in September is 84%.

How many days does it rain in September in Prince Rupert?

In September, in Prince Rupert, the rain falls for 19.4 days. Throughout September, 154mm (6.06") of precipitation is accumulated.

When it does not snow in Prince Rupert?

In Prince Rupert, Canada, snow does not fall in May through October.

What is the sea water temperature in September in Prince Rupert?

In September, the average sea temperature in Prince Rupert, Canada, is 12°C (53.6°F). Swimming in 12°C (53.6°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 Prince Rupert have in September?

In September, the average day length in Prince Rupert is 12h and 40min.

When is the sunrise / sunset in September in Prince Rupert?

On the first day of September in Prince Rupert, sunrise is at 6:50 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 7:18 pm PDT.

How long on average sun shines in September in Prince Rupert?

The average sunshine duration in September in Prince Rupert is 6.6h.

What is the UV index reading in September in Prince Rupert?

In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Prince Rupert, Canada

Average temperature in September - Prince Rupert, Canada
  • Average high temperature in September: 13.5°C

The warmest month (with the highest average high temperature) is August (15.3°C).
The month with the lowest average high temperature is December (3.6°C).

  • Average low temperature in September: 10.4°C

The month with the highest average low temperature is August (11.8°C).
The coldest month (with the lowest average low temperature) is February (0.8°C).

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Average pressure in September
Prince Rupert, Canada

Average pressure in September - Prince Rupert, Canada
  • Average pressure in September: 1014.1mbar

The month with the highest atmospheric pressure is July (1017.9mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).

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Average wind speed in September
Prince Rupert, Canada

Average wind speed in September - Prince Rupert, Canada
  • Average wind speed in September: 11.8km/h

The windiest month (with the highest average wind speed) is January (17.5km/h).
The calmest month (with the lowest average wind speed) is July (9.4km/h).

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Average humidity in September
Prince Rupert, Canada

Average humidity in September - Prince Rupert, Canada
  • Average humidity in September: 84%

The month with the highest relative humidity is August (86%).
The months with the lowest relative humidity are February and March (78%).

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Average rainfall in September
Prince Rupert, Canada

Average rainfall in September - Prince Rupert, Canada
  • Average rainfall in September: 154mm

The wettest month (with the highest rainfall) is November (190mm).
The driest month (with the least rainfall) is May (67mm).

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Average rainfall days in September
Prince Rupert, Canada

Average rainfall days in September - Prince Rupert, Canada
  • Average rainfall days in September: 19.4 days

The month with the highest number of rainy days is November (20.9 days).
The month with the least rainy days is February (13.8 days).

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Average snowfall in September
Prince Rupert, Canada

Average snowfall in September - Prince Rupert, Canada
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (112mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in September
Prince Rupert, Canada

Average snowfall days in September - Prince Rupert, Canada
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is March (6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average sea temperature in September
Prince Rupert, Canada

Average sea temperature in September - Prince Rupert, Canada
  • Average sea temperature in September: 12°C

The best months for swimming (with the highest average sea temperature) are July and August (13°C).
The coldest months (with the lowest average sea temperature) are January, February, March, April and December (7°C).

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Average daylight in September /
Average sunshine in September
Prince Rupert, Canada

Average daylight in September / Average sunshine in September - Prince Rupert, Canada
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).

  • Average sunshine in September: 6h and 4min

The month with the most sunshine is July (Average sunshine: 8h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in September
Prince Rupert, Canada

Average sunshine days in September - Prince Rupert, Canada
  • Average sunshine days in September: 9.2 days

The month with the most sunshine days is May (12.2 days).
The month with the least sunshine days is November (7.4 days).

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Average UV index in September
Prince Rupert, Canada

Average UV index in September - Prince Rupert, Canada
  • Average UV index in September: 3

The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in September
Prince Rupert, Canada

Average cloud cover in September - Prince Rupert, Canada
  • Average cloud cover in September: 51

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is September (Cloud cover 51).

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Average visibility in September
Prince Rupert, Canada

Average visibility in September - Prince Rupert, Canada
  • Average visibility in September: 9km

The month with the highest visibility is February (10km).
The months with the lowest visibility are January, March, April, May, June, July, August, September, October, November and December (9km).

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Prince Rupert, Canada

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