September weather forecastCoquitlam, Canada
September
Weather in September
September brings a mild change in the weather, with a hint of autumn starting to show in Coquitlam. Rainfall becomes more prominent, with a noticeable increase to 96mm (3.78"), as draw to the drier summer spell. It's a month of transition as the warm summer slowly shifts into cooler autumn, and the foliage begins to change colors. The weather remains pleasant for outdoor escapades, providing beautiful backdrops of the cityscape. September paints a fascinating picture of the changing seasons in Coquitlam.Temperature
September's arrival comes with a mild decrease in the average high-temperature, moving subtly from an agreeable 20.8°C (69.4°F) in August to an enjoyable 17.1°C (62.8°F). Throughout the nights in September, Coquitlam experiences an average low-temperature of 9.2°C (48.6°F).Humidity
In September, the average relative humidity is 80%.Rainfall
In Coquitlam, in September, it is raining for 15.1 days, with typically 96mm (3.78") of accumulated precipitation. In Coquitlam, during the entire year, the rain falls for 208.8 days and collects up to 1631mm (64.21") of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:53 pm. On the last day of September, in Coquitlam, sunrise is at 7:10 am and sunset at 6:51 pm PDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
In Coquitlam, Canada, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. 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
Coquitlam, Canada
- Average high temperature in September: 17.1°C
The warmest month (with the highest average high temperature) is August (20.8°C).
The month with the lowest average high temperature is December (3.1°C).
- Average low temperature in September: 9.2°C
The month with the highest average low temperature is August (11.3°C).
The coldest month (with the lowest average low temperature) is December (-0.7°C).
Average pressure in September
Coquitlam, Canada
- Average pressure in September: 1016.1mbar
The month with the highest atmospheric pressure is January (1018.4mbar).
The month with the lowest atmospheric pressure is March (1015.8mbar).
Average wind speed in September
Coquitlam, Canada
- Average wind speed in September: 5.8km/h
The windiest month (with the highest average wind speed) is March (8.1km/h).
The calmest month (with the lowest average wind speed) is August (5.3km/h).
Average humidity in September
Coquitlam, Canada
- Average humidity in September: 80%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is July (74%).
Average rainfall in September
Coquitlam, Canada
- Average rainfall in September: 96mm
The wettest month (with the highest rainfall) is November (252mm).
The driest month (with the least rainfall) is July (37mm).
Average rainfall days in September
Coquitlam, Canada
- Average rainfall days in September: 15.1 days
The months with the highest number of rainy days are March and April (21.3 days).
The month with the least rainy days is August (11.3 days).
Average snowfall in September
Coquitlam, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (100mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Coquitlam, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.8 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
Coquitlam, 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 18min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 36min).
Average sunshine days in September
Coquitlam, Canada
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is August (17.7 days).
The month with the least sunshine days is April (7 days).
Average UV index in September
Coquitlam, Canada
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Coquitlam, Canada
- Average cloud cover in September: 40
The month with the most cloud cover is December (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in September
Coquitlam, Canada
- Average visibility in September: 8km
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January, February, March, April, September, October, November and December (8km).
