September weather forecastSumsk, Russia
September
Weather in September
September, the first month of the autumn in Sumsk, is still a mild month, with an average temperature ranging between min 7.8°C (46°F) and max 15.1°C (59.2°F).Temperature
A shift in Sumsk's weather is observed as August turns into September, with the average high temperature reducing from a pleasant 20.7°C (69.3°F) to a refreshing 15.1°C (59.2°F). In Sumsk, September nights witness a steady temperature drop to a frosty 7.8°C (46°F).Humidity
In Sumsk, the average relative humidity in September is 84%.Rainfall
In September, in Sumsk, the rain falls for 14.7 days. Throughout September, 37mm (1.46") of precipitation is accumulated. In Sumsk, Russia, during the entire year, the rain falls for 143.6 days and collects up to 528mm (20.79") of precipitation.Snowfall
June through September are months without snowfall in Sumsk.Daylight
In Sumsk, the average length of the day in September is 12h and 50min.On the first day of September in Sumsk, sunrise is at 06:01 and sunset at 20:05. On the last day of the month, sunrise is at 07:07 and sunset at 18:39 MSK.
Sunshine
The average sunshine in September in Sumsk, Russia, is 5.4h.UV index
In September, the average daily maximum UV index in Sumsk is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 2 in September leads to these recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sumsk, Russia
- Average high temperature in September: 15.1°C
The warmest month (with the highest average high temperature) is July (22.4°C).
The month with the lowest average high temperature is January (-4.6°C).
- Average low temperature in September: 7.8°C
The month with the highest average low temperature is July (12.5°C).
The coldest month (with the lowest average low temperature) is January (-8.9°C).
Average pressure in September
Sumsk, Russia
- Average pressure in September: 1014.2mbar
The month with the highest atmospheric pressure is May (1015.2mbar).
The month with the lowest atmospheric pressure is December (1010.4mbar).
Average wind speed in September
Sumsk, Russia
- Average wind speed in September: 11.2km/h
The windiest month (with the highest average wind speed) is December (13.7km/h).
The calmest month (with the lowest average wind speed) is August (10.4km/h).
Average humidity in September
Sumsk, Russia
- Average humidity in September: 84%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Sumsk, Russia
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is July (61mm).
The driest month (with the least rainfall) is November (35mm).
Average rainfall days in September
Sumsk, Russia
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in September
Sumsk, Russia
- Average snowfall in September: 0mm
The month with the highest snowfall is February (289mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Sumsk, Russia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (23.8 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sumsk, Russia
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in September: 5h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Average sunshine days in September
Sumsk, Russia
- Average sunshine days in September: 12.1 days
The month with the most sunshine days is May (15.3 days).
The month with the least sunshine days is February (5.3 days).
Average UV index in September
Sumsk, Russia
- Average UV index in September: 2
The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in September
Sumsk, Russia
- Average cloud cover in September: 60
The month with the most cloud cover is December (Cloud cover 88).
The month with the least cloud cover is May (Cloud cover 43).
Average visibility in September
Sumsk, Russia
- Average visibility in September: 8km
The months with the highest visibility are May, June and July (9km).
The month with the lowest visibility is February (5km).
