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 observes an average high-temperature of a still warm 28.6°C (83.5°F), marking an insignificant difference from August's 28.5°C (83.3°F). An average low-temperature of 17.3°C (63.1°F) is expected during September.Heat index
The heat index value for September is estimated at a tropical 34°C (93.2°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.It is essential to grasp that the heat index's numbers are for shade and light wind settings. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. 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
The average relative humidity in September is 84%.Rainfall
In Fong Sali, during September, the rain falls for 25 days and regularly aggregates up to 130mm (5.12") of precipitation. In Fong Sali, 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
In September, the average length of the day is 12h and 16min.On the first day of September, sunrise is at 05:54 and sunset at 18:27. On the last day of the month, sunrise is at 06:02 and sunset at 18:00 +07.
Sunshine
The average sunshine in September is 8h.UV index
The months with the highest UV index in Fong Sali, Laos, are March, April, July and September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 6 during September leads to these instructions:
Fend off overexposure. Sun protection is vital. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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?
How many hours of daylight does Fong Sali have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Fong Sali have in September?
When is the highest UV index?
What is the UV index intensity in September in Fong Sali?
Average temperature in September
Fong Sali, Laos
- 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
Fong Sali, Laos
- 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
Fong Sali, Laos
- 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
Fong Sali, Laos
- 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
Fong Sali, Laos
- 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
Fong Sali, Laos
- 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
Fong Sali, Laos
- 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
Fong Sali, Laos
- 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
Fong Sali, Laos
- 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 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
Fong Sali, Laos
- 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
Fong Sali, Laos
- 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
Fong Sali, Laos
- 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
Fong Sali, Laos
- 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).
