September weather forecastMarystown, Canada
September
Weather in September
September, the first month of the autumn in Marystown, is still a refreshing month, with an average temperature ranging between max 15.7°C (60.3°F) and min 13.4°C (56.1°F).Temperature
September's commencement is accompanied by an average high-temperature of a moderate 15.7°C (60.3°F), diverging marginally from August's 17.9°C (64.2°F). September nights in Marystown document an average temperature reading of 13.4°C (56.1°F).Humidity
In September, the average relative humidity in Marystown is 81%.Rainfall
In September, the rain falls for 11.6 days. Throughout September, 53mm (2.09") of precipitation is accumulated. Throughout the year, in Marystown, there are 140.2 rainfall days, and 719mm (28.31") of precipitation is accumulated.Snowfall
June through October are months without snowfall.Sea temperature
In Marystown, in September, the average water temperature is 13.7°C (56.7°F).Note: Swimming in 13.7°C (56.7°F) can be lethal. Merely spending a few minutes in 13°C (55.4°F) waters feels harsh, and venturing below 10°C (50°F) might disrupt breathing control and bring about cold shock, contingent on individual resilience.
Daylight
In Marystown, the average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:50 pm. On the last day of September, in Marystown, sunrise is at 7:09 am and sunset at 6:51 pm NDT.
Sunshine
In September, the average sunshine is 6.7h.UV index
In Marystown, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Marystown, Canada
- Average high temperature in September: 15.7°C
The warmest month (with the highest average high temperature) is August (17.9°C).
The month with the lowest average high temperature is February (-0.2°C).
- Average low temperature in September: 13.4°C
The month with the highest average low temperature is August (16.2°C).
The coldest month (with the lowest average low temperature) is February (-3.4°C).
Average pressure in September
Marystown, Canada
- Average pressure in September: 1015.9mbar
The month with the highest atmospheric pressure is September (1015.9mbar).
The month with the lowest atmospheric pressure is February (1009.2mbar).
Average wind speed in September
Marystown, Canada
- Average wind speed in September: 27.8km/h
The windiest month (with the highest average wind speed) is January (37.2km/h).
The calmest month (with the lowest average wind speed) is July (22.3km/h).
Average humidity in September
Marystown, Canada
- Average humidity in September: 81%
The month with the highest relative humidity is July (89%).
The months with the lowest relative humidity are January, November and December (79%).
Average rainfall in September
Marystown, Canada
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is November (69mm).
The driest month (with the least rainfall) is May (50mm).
Average rainfall days in September
Marystown, Canada
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is July (14.7 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in September
Marystown, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is March (50mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Marystown, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Marystown, Canada
- Average sea temperature in September: 13.7°C
The best month for swimming (with the highest average sea temperature) is August (14.9°C).
The coldest month (with the lowest average sea temperature) is March (0.5°C).
Average daylight in September /
Average sunshine in September
Marystown, Canada
- Average daylight in September: 12h and 30min
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: 6h and 42min
The month with the most sunshine is August (Average sunshine: 8h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).
Average sunshine days in September
Marystown, Canada
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is August (15.8 days).
The month with the least sunshine days is December (9.2 days).
Average UV index in September
Marystown, Canada
- Average UV index in September: 4
The month with the highest UV index is August (UV index 5).
The months with the lowest UV index are January, March and December (UV index 1).
Average cloud cover in September
Marystown, Canada
- Average cloud cover in September: 45
The month with the most cloud cover is January (Cloud cover 80).
The months with the least cloud cover are August and September (Cloud cover 45).
Average visibility in September
Marystown, Canada
- Average visibility in September: 10km
The months with the highest visibility are August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, November and December (9km).





