September weather forecastSlonim, Belarus
September
Weather in September
As September ushers in the beginning of Autumn in Slonim, a dramatic temperature drop to 18.5°C (65.3°F) makes a battleground of summer warmth and incoming chill. Despite the change in temperature, rainfall continues to be an expected part of monthly weather patterns. Reduced daylight hours and intermittent sunny days begin asserting the impending autumn. Winds pick up their pace, creating a perceptible shift in the overall climate. Yes, autumn is knocking on the door of Slonim city.Temperature
Slonim in September experiences a subtle temperature decline, with average high-temperatures reducing from a moderately hot 24.4°C (75.9°F) in August to a refreshing 18.5°C (65.3°F). During the September nights, an average temperature of 9.3°C (48.7°F) is observed.Humidity
In September, the average relative humidity is 76%.Rainfall
In Slonim, Belarus, in September, it is raining for 10.8 days, with typically 27mm (1.06") of accumulated precipitation. In Slonim, during the entire year, the rain falls for 136.7 days and collects up to 402mm (15.83") of precipitation.Snowfall
In Slonim, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 41min.On the first day of September, sunrise is at 06:29 and sunset at 20:07. On the last day of the month, sunrise is at 07:19 and sunset at 18:57 +03.
Sunshine
In Slonim, the average sunshine in September is 7.4h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, a daily UV index of 3 turns into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. 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
Slonim, Belarus
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is July (24.6°C).
The month with the lowest average high temperature is January (-2.1°C).
- Average low temperature in September: 9.3°C
The month with the highest average low temperature is July (13.8°C).
The coldest month (with the lowest average low temperature) is January (-5.8°C).
Average pressure in September
Slonim, Belarus
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is October (1018.7mbar).
The month with the lowest atmospheric pressure is July (1013mbar).
Average wind speed in September
Slonim, Belarus
- Average wind speed in September: 10.8km/h
The windiest month (with the highest average wind speed) is December (12.7km/h).
The calmest month (with the lowest average wind speed) is August (9.6km/h).
Average humidity in September
Slonim, Belarus
- Average humidity in September: 76%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Slonim, Belarus
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is July (46mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Slonim, Belarus
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in September
Slonim, Belarus
- Average snowfall in September: 0mm
The month with the highest snowfall is January (165mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Slonim, Belarus
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Slonim, Belarus
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 7h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 1h and 24min).
Average sunshine days in September
Slonim, Belarus
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is September (17.3 days).
The month with the least sunshine days is February (8.8 days).
Average UV index in September
Slonim, Belarus
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Slonim, Belarus
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 81).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Slonim, Belarus
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August and September (9km).
The month with the lowest visibility is January (6km).
