September weather forecastRock Harbour, Canada
September
Weather in September
The first month of the autumn, September, is still a mild month in Rock Harbour, Canada, with temperature in the range of an average low of 13.4°C (56.1°F) and an average high of 15.7°C (60.3°F).Temperature
Rock Harbour's entry into September measures an average high-temperature of a still refreshing 15.7°C (60.3°F), closely parallel to the preceding month. Throughout September, Rock Harbour reports a steady low-temperature average of 13.4°C (56.1°F), slightly lower than its daytime counterpart.Humidity
In Rock Harbour, the average relative humidity in September is 81%.Rainfall
In September, in Rock Harbour, the rain falls for 11.6 days. Throughout September, 53mm (2.09") of precipitation is accumulated. Throughout the year, in Rock Harbour, there are 140.2 rainfall days, and 719mm (28.31") of precipitation is accumulated.Snowfall
June through October are months without snowfall in Rock Harbour.Daylight
In September, the average length of the day is 12h and 33min.On the first day of September, sunrise is at 6:30 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:51 pm NDT.
Sunshine
In Rock Harbour, Canada, the average sunshine in September is 6.7h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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 daylight in September /
Average sunshine in September
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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).
