Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The warmest period in Canada tends to be September, when average temperatures fluctuate between a high of 28.7°C (83.7°F) and a low of 27.7°C (81.9°F).Heat index
The average heat index in September is appraised at a hot 33°C (91.4°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.Bear in mind that the heat index values are determined for shaded areas and light breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Humidity
In September, the average relative humidity is 77%.Rainfall
In Canada, during September, the rain falls for 18.3 days and regularly aggregates up to 50mm (1.97") of precipitation. Throughout the year, there are 198.3 rainfall days, and 386mm (15.2") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 14min.On the first day of September in Canada, sunrise is at 05:57 and sunset at 18:24. On the last day of the month, sunrise is at 06:00 and sunset at 18:00 AST.
Sunshine
In Canada, the average sunshine in September is 10.1h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index in Canada. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Canada. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 7 in September suggests the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month in Canada?
How hot does it get in Canada in September?
What is the average humidity in September in Canada?
How many days does it rain in September in Canada?
How many hours of daylight does Canada have in September?
What time are sunrise and sunset in September in Canada?
How long on average sun shines in September in Canada?
What is the month with the highest UV index in Canada?
What are the months with the lowest UV index in Canada?
What is the UV index intensity in September in Canada?
Average temperature in September
Canada, Saint Kitts and Nevis
- Average high temperature in September: 28.7°C
The warmest month (with the highest average high temperature) is September (28.7°C).
The month with the lowest average high temperature is March (25.8°C).
- Average low temperature in September: 27.7°C
The month with the highest average low temperature is October (27.8°C).
The coldest month (with the lowest average low temperature) is March (24.9°C).
Average pressure in September
Canada, Saint Kitts and Nevis
- Average pressure in September: 1013.2mbar
The months with the highest atmospheric pressure are January and June (1016.2mbar).
The months with the lowest atmospheric pressure are October and November (1012.5mbar).
Average wind speed in September
Canada, Saint Kitts and Nevis
- Average wind speed in September: 20.4km/h
The windiest month (with the highest average wind speed) is July (26.3km/h).
The calmest month (with the lowest average wind speed) is October (19.6km/h).
Average humidity in September
Canada, Saint Kitts and Nevis
- Average humidity in September: 77%
The months with the highest relative humidity are May, June, July and August (78%).
The months with the lowest relative humidity are January, February, March and December (75%).
Average rainfall in September
Canada, Saint Kitts and Nevis
- Average rainfall in September: 50mm
The wettest month (with the highest rainfall) is October (51mm).
The driest month (with the least rainfall) is February (15mm).
Average rainfall days in September
Canada, Saint Kitts and Nevis
- Average rainfall days in September: 18.3 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (12.6 days).
Average daylight in September /
Average sunshine in September
Canada, Saint Kitts and Nevis
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Canada, Saint Kitts and Nevis
- Average sunshine days in September: 8.4 days
The month with the most sunshine days is June (11.2 days).
The month with the least sunshine days is May (7.6 days).
Average UV index in September
Canada, Saint Kitts and Nevis
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Canada, Saint Kitts and Nevis
- Average cloud cover in September: 37
The months with the most cloud cover are May, June and July (Cloud cover 40).
The month with the least cloud cover is February (Cloud cover 32).
Average visibility in September
Canada, Saint Kitts and Nevis
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Canada, Saint Kitts and Nevis
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