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 sea temperature 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 onset of September brings a small shift in high-temperatures, falling from a pleasant 22.8°C (73°F) in August to an enjoyable 18.5°C (65.3°F). Summerside's temperature lowers to a mean of 12.6°C (54.7°F) during the nights in September.Humidity
July through October, with an average relative humidity of 77%, are the least humid months in Summerside.Rainfall
In Summerside, in September, it is raining for 12.6 days, with typically 55mm (2.17") of accumulated precipitation. Throughout the year, there are 153.3 rainfall days, and 807mm (31.77") of precipitation is accumulated.Snowfall
In Summerside, snow does not fall in June through September.Sea temperature
In September, the average sea temperature is 15.7°C (60.3°F).Note: For most people, a water temperature of 15.7°C (60.3°F) is not conducive to enjoyable swimming. Breathing control becomes harder as the water temperature dips below 21°C (69.8°F).
Daylight
In Summerside, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:13 am and sunset at 6:56 pm ADT.
Sunshine
The average sunshine in September in Summerside is 7.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What are September temperatures in Summerside?
What is the least humid month in Summerside?
What is the average humidity in September in Summerside?
How many days does it rain in September in Summerside?
When it does not snow in Summerside?
Does it snow in Summerside in September?
What is the sea water temperature in September in Summerside?
How many hours of daylight does Summerside have in September?
When is the sunrise / sunset in September in Summerside?
How long on average sun shines in September in Summerside?
How high is the UV index in September in Summerside?
Average temperature in September
Summerside, Canada
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is August (22.8°C).
The months with the lowest average high temperature are January and February (-3.3°C).
- Average low temperature in September: 12.6°C
The month with the highest average low temperature is August (16°C).
The coldest month (with the lowest average low temperature) is February (-9.3°C).
Average pressure in September
Summerside, Canada
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is September (1016.2mbar).
The month with the lowest atmospheric pressure is January (1012mbar).
Average wind speed in September
Summerside, Canada
- Average wind speed in September: 16.5km/h
The windiest month (with the highest average wind speed) is December (20.2km/h).
The calmest month (with the lowest average wind speed) is July (14.4km/h).
Average humidity in September
Summerside, Canada
- Average humidity in September: 77%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are July, August, September and October (77%).
Average rainfall in September
Summerside, Canada
- Average rainfall in September: 55mm
The wettest month (with the highest rainfall) is December (86mm).
The driest month (with the least rainfall) is July (53mm).
Average rainfall days in September
Summerside, Canada
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (6 days).
Average snowfall in September
Summerside, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (195mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Summerside, 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 sea temperature in September
Summerside, Canada
- Average sea temperature in September: 15.7°C
The best month for swimming (with the highest average sea temperature) is August (18.2°C).
The coldest months (with the lowest average sea temperature) are February and March (-1.1°C).
Average daylight in September /
Average sunshine in September
Summerside, Canada
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 7h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 6min).
The months with the least sunshine are January and December (Average sunshine: 2h and 42min).
Average sunshine days in September
Summerside, Canada
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in September
Summerside, Canada
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are February, March and December (UV index 1).
Average cloud cover in September
Summerside, Canada
- Average cloud cover in September: 41
The month with the most cloud cover is December (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Summerside, Canada
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September, October and November (9km).
The month with the lowest visibility is February (7km).
Summerside, Canada
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