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 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
September
Weather in September
Temperature
September's onset sees an average high-temperature of a still tropical 30.9°C (87.6°F), exhibiting a slight fluctuation from the previous month. Thạch Khôi reports an average low-temperature of 25.4°C (77.7°F) during the nights of September.Heat index
The heat index for September is estimated at a blisteringly hot 40°C (104°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.When assessing, remember that heat index measurements are for light winds and shaded spots. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.
Humidity
In Thạch Khôi, the average relative humidity in September is 78%.Rainfall
In Thạch Khôi, in September, during 22.6 rainfall days, 165mm (6.5") of precipitation is typically accumulated. In Thạch Khôi, during the entire year, the rain falls for 234.9 days and collects up to 1142mm (44.96") of precipitation.Snowfall
September is the only month when snow falls. September has the most snowfall days of the year. Snow falls for 0.1 days.Daylight
The average length of the day in September is 12h and 16min.On the first day of September, sunrise is at 05:38 and sunset at 18:10. On the last day of the month, sunrise is at 05:45 and sunset at 17:43 +07.
Sunshine
In September, the average sunshine is 9.2h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 7 during September translates into the following directions:
Deflect overexposure. Sun protection is a necessity. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How many days does it rain in September?
What is the snowiest month in Thạch Khôi?
When does it start snowing?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Thạch Khôi have in September?
When is the highest UV index?
What is the UV index intensity in September?
Average temperature in September
Thạch Khôi, Vietnam
- Average high temperature in September: 30.9°C
The warmest month (with the highest average high temperature) is June (33.3°C).
The month with the lowest average high temperature is January (19.9°C).
- Average low temperature in September: 25.4°C
The month with the highest average low temperature is June (27.3°C).
The coldest month (with the lowest average low temperature) is January (15.3°C).
Average pressure in September
Thạch Khôi, Vietnam
- Average pressure in September: 1007.9mbar
The month with the highest atmospheric pressure is January (1019.1mbar).
The month with the lowest atmospheric pressure is June (1002.6mbar).
Average wind speed in September
Thạch Khôi, Vietnam
- Average wind speed in September: 10.2km/h
The windiest month (with the highest average wind speed) is June (13.4km/h).
The calmest month (with the lowest average wind speed) is August (10km/h).
Average humidity in September
Thạch Khôi, Vietnam
- Average humidity in September: 78%
The month with the highest relative humidity is April (82%).
The month with the lowest relative humidity is December (71%).
Average rainfall in September
Thạch Khôi, Vietnam
- Average rainfall in September: 165mm
The wettest month (with the highest rainfall) is August (251mm).
The driest month (with the least rainfall) is February (22mm).
Average rainfall days in September
Thạch Khôi, Vietnam
- Average rainfall days in September: 22.6 days
The month with the highest number of rainy days is July (28.5 days).
The month with the least rainy days is December (12.4 days).
Average snowfall days in September
Thạch Khôi, Vietnam
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Thạch Khôi, Vietnam
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Thạch Khôi, Vietnam
- Average sunshine days in September: 5.3 days
The month with the most sunshine days is December (15.1 days).
The month with the least sunshine days is July (1.8 days).
Average UV index in September
Thạch Khôi, Vietnam
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Thạch Khôi, Vietnam
- Average cloud cover in September: 34
The month with the most cloud cover is March (Cloud cover 66).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in September
Thạch Khôi, Vietnam
- Average visibility in September: 10km
The months with the highest visibility are June, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, July and August (9km).
