September weather forecastSurrey, Canada
September
Weather in September
September bears witness to the transition from summer to fall, with a modest drop in average high temperatures to 17.1°C (62.8°F). The rainfall noticeably increases to 87mm (3.43"), hinting at the imminent arrival of the wetter season. Despite the advances of autumn, the sea water lingers at a warming 11.3°C (52.3°F). Declining daylight hours also signify the changing of seasons.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 17.1°C (62.8°F). September nights in Surrey cool down to an average low-temperature of 10.4°C (50.7°F).Humidity
In Surrey, the average relative humidity in September is 80%.Rainfall
In September, the rain falls for 14.8 days. Throughout September, 87mm (3.43") of precipitation is accumulated. Throughout the year, there are 199.4 rainfall days, and 1439mm (56.65") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Sea temperature
In Surrey, the average seawater temperature in September is 11.3°C (52.3°F).Note: Dipping in 11.3°C (52.3°F) at temperatures less than 10°C (50°F) without proper gear can lead to pronounced cold shock and breathing difficulties.
Daylight
In September, the average length of the day is 12h and 34min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:10 am and sunset at 6:51 pm PDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 3 in September suggests the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Surrey, Canada
- Average high temperature in September: 17.1°C
The warmest months (with the highest average high temperature) are July and August (20.4°C).
The month with the lowest average high temperature is December (4.1°C).
- Average low temperature in September: 10.4°C
The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is December (0.8°C).
Average pressure in September
Surrey, Canada
- Average pressure in September: 1016.1mbar
The month with the highest atmospheric pressure is January (1018.3mbar).
The month with the lowest atmospheric pressure is March (1015.8mbar).
Average wind speed in September
Surrey, Canada
- Average wind speed in September: 6.5km/h
The windiest months (with the highest average wind speed) are March and November (9.4km/h).
The calmest month (with the lowest average wind speed) is August (5.8km/h).
Average humidity in September
Surrey, Canada
- Average humidity in September: 80%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (75%).
Average rainfall in September
Surrey, Canada
- Average rainfall in September: 87mm
The wettest month (with the highest rainfall) is November (222mm).
The driest month (with the least rainfall) is July (28mm).
Average rainfall days in September
Surrey, Canada
- Average rainfall days in September: 14.8 days
The month with the highest number of rainy days is March (21.1 days).
The month with the least rainy days is August (9.3 days).
Average snowfall in September
Surrey, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (98mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Surrey, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Surrey, Canada
- Average sea temperature in September: 11.3°C
The best month for swimming (with the highest average sea temperature) is August (11.5°C).
The coldest months (with the lowest average sea temperature) are January and February (6.8°C).
Average daylight in September /
Average sunshine in September
Surrey, Canada
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 8h and 30min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Surrey, Canada
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is August (19.1 days).
The month with the least sunshine days is March (7.8 days).
Average UV index in September
Surrey, 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
Surrey, Canada
- Average cloud cover in September: 37
The months with the most cloud cover are January and December (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Surrey, Canada
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).
