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
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a warm 25°C (77°F) to an agreeable 21.8°C (71.2°F). During the nights in September, Welland experiences a consistent average temperature of 14.2°C (57.6°F).Humidity
September is the least humid month, with an average relative humidity of 75%.Rainfall
September is the month with the least rainfall in Welland. Rain falls for 14.8 days and accumulates 53mm (2.09") of precipitation.Snowfall
In Welland, snow does not fall in June through September.Daylight
The average length of the day in September in Welland is 12h and 29min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:13 am and sunset at 6:59 pm EDT.
Sunshine
In Welland, the average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September in Welland is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 4 during September translates into the following guidance:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What are September temperatures in Welland?
What is the least humid month in Welland?
What is the average humidity in September in Welland?
What is the driest month in Welland?
How much does it rain in Welland in September?
When it does not snow in Welland?
Does it snow in Welland in September?
How many hours of daylight does Welland have in September?
What time are sunrise and sunset in September in Welland?
How many hours of sunshine does Welland have in September?
What is the UV index intensity in September in Welland?
Average temperature in September
Welland, Canada
- Average high temperature in September: 21.8°C
The warmest month (with the highest average high temperature) is July (25.7°C).
The month with the lowest average high temperature is January (-1.5°C).
- Average low temperature in September: 14.2°C
The month with the highest average low temperature is July (17.5°C).
The coldest month (with the lowest average low temperature) is January (-6.7°C).
Average pressure in September
Welland, Canada
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).
Average wind speed in September
Welland, Canada
- Average wind speed in September: 12.9km/h
The windiest month (with the highest average wind speed) is January (19.6km/h).
The calmest month (with the lowest average wind speed) is July (11.6km/h).
Average humidity in September
Welland, Canada
- Average humidity in September: 75%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is September (75%).
Average rainfall in September
Welland, Canada
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is July (86mm).
The driest month (with the least rainfall) is September (53mm).
Average rainfall days in September
Welland, Canada
- Average rainfall days in September: 14.8 days
The month with the highest number of rainy days is July (18.7 days).
The months with the least rainy days are January and February (8.1 days).
Average snowfall in September
Welland, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (179mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Welland, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Welland, Canada
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Welland, Canada
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is September (12.6 days).
The month with the least sunshine days is January (8.3 days).
Average UV index in September
Welland, Canada
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Welland, Canada
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Welland, Canada
- Average visibility in September: 10km
The month with the highest visibility is September (10km).
The months with the lowest visibility are January and February (8km).
Welland, Canada
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