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 snowfall in September
- Average snowfall 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
In September, the meteorological conditions change slightly, with the average high-temperature moving from a moderately hot 24.2°C (75.6°F) in August to an agreeable 20.7°C (69.3°F). The low-temperature average for Guelph during September stands at a cool 11°C (51.8°F).Humidity
In Guelph, the average relative humidity in September is 80%.Rainfall
The month with the least rainfall in Guelph, Canada, is September, when the rain falls for 14.5 days and typically collects 41mm (1.61") of precipitation.Snowfall
In Guelph, Canada, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:55 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:03 pm EDT.
Sunshine
In Guelph, Canada, the average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Frequently asked questions
What is the temperature in September in Guelph?
What is the average humidity in September in Guelph?
What is the driest month in Guelph?
How many days does it rain in September in Guelph?
When it does not snow in Guelph?
Does it snow in Guelph in September?
How many hours of daylight does Guelph have in September?
What time are sunrise and sunset in September in Guelph?
How long on average sun shines in September in Guelph?
What is the UV index reading in September in Guelph?
Average temperature in September
Guelph, Canada
- Average high temperature in September: 20.7°C
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-3.8°C).
- Average low temperature in September: 11°C
The month with the highest average low temperature is July (15°C).
The coldest month (with the lowest average low temperature) is January (-9.4°C).
Average pressure in September
Guelph, Canada
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is March (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.2mbar).
Average wind speed in September
Guelph, Canada
- Average wind speed in September: 11.7km/h
The windiest month (with the highest average wind speed) is January (17.6km/h).
The calmest month (with the lowest average wind speed) is July (10.8km/h).
Average humidity in September
Guelph, Canada
- Average humidity in September: 80%
The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in September
Guelph, Canada
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is May (75mm).
The driest month (with the least rainfall) is September (41mm).
Average rainfall days in September
Guelph, Canada
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in September
Guelph, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (162mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Guelph, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Guelph, Canada
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Guelph, Canada
- Average sunshine days in September: 11.5 days
The month with the most sunshine days is September (11.5 days).
The months with the least sunshine days are January and February (7.3 days).
Average UV index in September
Guelph, Canada
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Guelph, Canada
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 73).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in September
Guelph, Canada
- Average visibility in September: 8km
The months with the highest visibility are April, May, June, July, August and October (9km).
The months with the lowest visibility are January, February, March, September, November and December (8km).
Guelph, Canada
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