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
Weather in September
Temperature
The shift from August to September involves a decrease in the average high-temperature, dropping from a warm 24.6°C (76.3°F) to a refreshing 19°C (66.2°F). The average temperature drops to a frosty 7.8°C (46°F) during the night in the month of September.Humidity
In Boli, the average relative humidity in September is 74%.Rainfall
In Boli, in September, during 12.4 rainfall days, 33mm (1.3") of precipitation is typically accumulated. In Boli, during the entire year, the rain falls for 122.4 days and collects up to 495mm (19.49") of precipitation.Snowfall
Months with snowfall in Boli are January through May, September through December. September is the first month it typically snows in Boli. Throughout September, in the average 0.1 snowfall days, it receives 2mm (0.08") of snow. Throughout the year, in Boli, there are 50.9 snowfall days, and 458mm (18.03") of snow is accumulated.Daylight
In Boli, the average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 04:38 and sunset at 17:56. On the last day of September, in Boli, sunrise is at 05:14 and sunset at 17:00 CST.
Sunshine
In September, the average sunshine in Boli is 8.5h.UV index
The average daily maximum UV index in September in Boli is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 3 during September translates into the following directions:
Ensure safety - Recommendations to avert sunburn are presented. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
What is the average September temperature in Boli?
What is the average humidity in September in Boli?
How much does it rain in Boli in September?
When does it start to snow in Boli?
How many hours of daylight does Boli have in September?
When are sunrise and sunset in September in Boli?
How long on average sun shines in September in Boli?
What is the UV index intensity in September in Boli?
Average temperature in September
Boli, China
- Average high temperature in September: 19°C
The warmest month (with the highest average high temperature) is July (26.3°C).
The month with the lowest average high temperature is January (-14.1°C).
- Average low temperature in September: 7.8°C
The month with the highest average low temperature is July (16.1°C).
The coldest month (with the lowest average low temperature) is January (-22.4°C).
Average pressure in September
Boli, China
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is January (1023.9mbar).
The month with the lowest atmospheric pressure is July (1005.1mbar).
Average wind speed in September
Boli, China
- Average wind speed in September: 10.4km/h
The windiest month (with the highest average wind speed) is April (14.5km/h).
The calmest month (with the lowest average wind speed) is July (8.5km/h).
Average humidity in September
Boli, China
- Average humidity in September: 74%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (54%).
Average rainfall in September
Boli, China
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is August (112mm).
The driest month (with the least rainfall) is January (3mm).
Average rainfall days in September
Boli, China
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is June (21.2 days).
The month with the least rainy days is January (0.8 days).
Average snowfall in September
Boli, China
- Average snowfall in September: 2mm
The month with the highest snowfall is November (122mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Boli, China
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is March (13.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Boli, China
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).
Average sunshine days in September
Boli, China
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (26.4 days).
The month with the least sunshine days is June (7.2 days).
Average UV index in September
Boli, China
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in September
Boli, China
- Average cloud cover in September: 29
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in September
Boli, China
- Average visibility in September: 9km
The month with the highest visibility is October (10km).
The months with the lowest visibility are January and February (7km).
Boli, China
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