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
September
Weather in September
Temperature
A mild shift in the average high-temperature occurs in September, reducing from a pleasant 21.4°C (70.5°F) in August to a refreshing 16.8°C (62.2°F). An average low-temperature of 7.6°C (45.7°F) is noted during the month of September.Humidity
In September, the average relative humidity is 80%.Rainfall
In September, the rain falls for 12.5 days. Throughout September, 53mm (2.09") of precipitation is accumulated. Throughout the year, there are 152.6 rainfall days, and 754mm (29.69") of precipitation is accumulated.Snowfall
In Saint-Jean-Port-Joli, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 33min.On the first day of September, sunrise is at 6:01 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:22 pm EDT.
Sunshine
In September, the average sunshine is 8.2h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 3 in September translates into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Saint-Jean-Port-Joli in September?
What is the average humidity in September in Saint-Jean-Port-Joli?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Saint-Jean-Port-Joli have in September?
What is the UV index reading in September?
Average temperature in September
Saint-Jean-Port-Joli, Canada
- Average high temperature in September: 16.8°C
The warmest month (with the highest average high temperature) is July (22.1°C).
The month with the lowest average high temperature is January (-8.5°C).
- Average low temperature in September: 7.6°C
The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is January (-16.8°C).
Average pressure in September
Saint-Jean-Port-Joli, Canada
- Average pressure in September: 1016.4mbar
The month with the highest atmospheric pressure is March (1016.9mbar).
The month with the lowest atmospheric pressure is June (1011.9mbar).
Average wind speed in September
Saint-Jean-Port-Joli, Canada
- Average wind speed in September: 10km/h
The windiest months (with the highest average wind speed) are January, February and March (11.5km/h).
The calmest months (with the lowest average wind speed) are June, July, August and September (10km/h).
Average humidity in September
Saint-Jean-Port-Joli, Canada
- Average humidity in September: 80%
The months with the highest relative humidity are January, February and March (92%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
Saint-Jean-Port-Joli, Canada
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is October (79mm).
The driest month (with the least rainfall) is February (51mm).
Average rainfall days in September
Saint-Jean-Port-Joli, Canada
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is April (16.6 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in September
Saint-Jean-Port-Joli, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is March (314mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Saint-Jean-Port-Joli, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Saint-Jean-Port-Joli, Canada
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in September
Saint-Jean-Port-Joli, Canada
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is April (8 days).
Average UV index in September
Saint-Jean-Port-Joli, Canada
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in September
Saint-Jean-Port-Joli, Canada
- Average cloud cover in September: 39
The months with the most cloud cover are January and February (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in September
Saint-Jean-Port-Joli, Canada
- Average visibility in September: 8km
The months with the highest visibility are May and June (9km).
The months with the lowest visibility are January and February (6km).
