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
September
Weather in September
Temperature
September's average high-temperature stands at a still moderately hot 28.6°C (83.5°F), showing little deviation from August's 28.5°C (83.3°F). The month of September records an average low-temperature of 17.3°C (63.1°F).Heat index
The heat index value for September is appraised at a hot 34°C (93.2°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Humidity
In Nậm Vì, the average relative humidity in September is 84%.Rainfall
In Nậm Vì, in September, during 25 rainfall days, 130mm (5.12") of precipitation is typically accumulated. In Nậm Vì, during the entire year, the rain falls for 220.4 days and collects up to 1213mm (47.76") of precipitation.Snowfall
February through December are months without snowfall.Daylight
The average length of the day in September is 12h and 17min.On the first day of September, sunrise is at 05:52 and sunset at 18:26. On the last day of the month, sunrise is at 06:01 and sunset at 17:58 +07.
Sunshine
In Nậm Vì, the average sunshine in September is 8h.UV index
March, April, July and September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 6 during September morphs into the following directions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the month with the highest UV index?
What is the UV index reading in September?
Average temperature in September
Nậm Vì, Vietnam
- Average high temperature in September: 28.6°C
The warmest month (with the highest average high temperature) is April (31.2°C).
The months with the lowest average high temperature are January and December (22°C).
- Average low temperature in September: 17.3°C
The month with the highest average low temperature is June (19.3°C).
The coldest month (with the lowest average low temperature) is January (7.8°C).
Average pressure in September
Nậm Vì, Vietnam
- Average pressure in September: 1009.5mbar
The month with the highest atmospheric pressure is December (1016.5mbar).
The months with the lowest atmospheric pressure are June and July (1005.7mbar).
Average wind speed in September
Nậm Vì, Vietnam
- Average wind speed in September: 3.2km/h
The windiest month (with the highest average wind speed) is March (5km/h).
The calmest months (with the lowest average wind speed) are August, September and November (3.2km/h).
Average humidity in September
Nậm Vì, Vietnam
- Average humidity in September: 84%
The month with the highest relative humidity is July (89%).
The month with the lowest relative humidity is March (52%).
Average rainfall in September
Nậm Vì, Vietnam
- Average rainfall in September: 130mm
The wettest month (with the highest rainfall) is July (245mm).
The driest month (with the least rainfall) is February (9mm).
Average rainfall days in September
Nậm Vì, Vietnam
- Average rainfall days in September: 25 days
The month with the highest number of rainy days is August (30.3 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Nậm Vì, Vietnam
- Average snowfall in September: 0mm
The month with the highest snowfall is January (5mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Nậm Vì, Vietnam
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Nậm Vì, Vietnam
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is April (Average sunshine: 10h and 42min).
The month with the least sunshine is July (Average sunshine: 6h and 6min).
Average sunshine days in September
Nậm Vì, Vietnam
- Average sunshine days in September: 3.3 days
The month with the most sunshine days is February (20.7 days).
The month with the least sunshine days is August (0.3 days).
Average UV index in September
Nậm Vì, Vietnam
- Average UV index in September: 6
The months with the highest UV index are March, April, July and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Nậm Vì, Vietnam
- Average cloud cover in September: 56
The month with the most cloud cover is July (Cloud cover 71).
The month with the least cloud cover is March (Cloud cover 19).
Average visibility in September
Nậm Vì, Vietnam
- Average visibility in September: 6km
The month with the highest visibility is March (10km).
The months with the lowest visibility are January, July, August, September, November and December (6km).
