September weather forecastDenman Island, Canada
September
Weather in September
September, the first month of the autumn in Denman Island, is still a comfortable month, with an average temperature ranging between max 16.9°C (62.4°F) and min 10.8°C (51.4°F).Temperature
As September commences, the average high-temperature subtly reduces, transitioning from an agreeable 20.4°C (68.7°F) in August to an enjoyable 16.9°C (62.4°F). Throughout September, an average nighttime temperature of 10.8°C (51.4°F) is experienced.Humidity
In Denman Island, the average relative humidity in September is 79%.Rainfall
In Denman Island, during September, the rain falls for 12.7 days and regularly aggregates up to 72mm (2.83") of precipitation. In Denman Island, Canada, during the entire year, the rain falls for 177.9 days and collects up to 904mm (35.59") of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Denman Island, the average length of the day in September is 12h and 35min.On the first day of September in Denman Island, sunrise is at 6:36 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 6:58 pm PDT.
Sunshine
In September, the average sunshine in Denman Island is 8.8h.UV index
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 the average person.Note: The UV index of 3 during September translates into the following guidance:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Denman Island, Canada
- Average high temperature in September: 16.9°C
The warmest month (with the highest average high temperature) is July (20.6°C).
The month with the lowest average high temperature is December (4.3°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is August (13°C).
The coldest month (with the lowest average low temperature) is February (1.2°C).
Average pressure in September
Denman Island, Canada
- Average pressure in September: 1015.8mbar
The month with the highest atmospheric pressure is July (1017.5mbar).
The month with the lowest atmospheric pressure is March (1014.7mbar).
Average wind speed in September
Denman Island, Canada
- Average wind speed in September: 6.9km/h
The windiest month (with the highest average wind speed) is November (10.2km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in September
Denman Island, Canada
- Average humidity in September: 79%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is July (71%).
Average rainfall in September
Denman Island, Canada
- Average rainfall in September: 72mm
The wettest month (with the highest rainfall) is January (145mm).
The driest month (with the least rainfall) is July (20mm).
Average rainfall days in September
Denman Island, Canada
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is November (19.7 days).
The month with the least rainy days is August (8.3 days).
Average snowfall in September
Denman Island, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (71mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Denman Island, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Denman Island, Canada
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in September: 8h and 48min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Denman Island, Canada
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is August (19.9 days).
The month with the least sunshine days is November (9 days).
Average UV index in September
Denman Island, Canada
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Denman Island, Canada
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Denman Island, Canada
- Average visibility in September: 9km
The months with the highest visibility are May, June, July and August (10km).
The months with the lowest visibility are January, February, March, April, September, October, November and December (9km).
