September weather forecastNapo, China
September
Weather in September
September, the first month of the autumn in Napo, is still a warm month, with an average temperature ranging between max 27.1°C (80.8°F) and min 18.2°C (64.8°F).Temperature
As Napo steps into September, the average high-temperature is measured at a still warm 27.1°C (80.8°F), displaying minor differences from August's 28.4°C (83.1°F). Throughout the month of September, Napo observes an average nighttime temperature of 18.2°C (64.8°F).Heat index
In September, the average heat index is evaluated at a tropical 30°C (86°F). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.The heat index's values are generally associated with conditions in shade and light breezes. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Humidity
In September, the average relative humidity in Napo is 84%.Rainfall
In Napo, China, in September, it is raining for 22.9 days, with typically 98mm (3.86") of accumulated precipitation. Throughout the year, in Napo, there are 228.8 rainfall days, and 1035mm (40.75") of precipitation is accumulated.Snowfall
April 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 06:38 and sunset at 19:14. On the last day of the month, sunrise is at 06:48 and sunset at 18:45 CST.
Sunshine
The average sunshine in September in Napo is 7.6h.UV index
The average daily maximum UV index in September in Napo is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 5 in September translates into this advice:
Put precautions into practice - Guidance to elude sunburn is provided. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Napo, China
- Average high temperature in September: 27.1°C
The warmest month (with the highest average high temperature) is August (28.4°C).
The month with the lowest average high temperature is January (15.4°C).
- Average low temperature in September: 18.2°C
The months with the highest average low temperature are June and July (20.3°C).
The coldest month (with the lowest average low temperature) is January (7.9°C).
Average pressure in September
Napo, China
- Average pressure in September: 1010mbar
The month with the highest atmospheric pressure is December (1020.2mbar).
The month with the lowest atmospheric pressure is June (1003.9mbar).
Average wind speed in September
Napo, China
- Average wind speed in September: 5.3km/h
The windiest month (with the highest average wind speed) is March (8km/h).
The calmest month (with the lowest average wind speed) is September (5.3km/h).
Average humidity in September
Napo, China
- Average humidity in September: 84%
The months with the highest relative humidity are June and July (86%).
The month with the lowest relative humidity is March (72%).
Average rainfall in September
Napo, China
- Average rainfall in September: 98mm
The wettest month (with the highest rainfall) is August (205mm).
The driest month (with the least rainfall) is February (12mm).
Average rainfall days in September
Napo, China
- Average rainfall days in September: 22.9 days
The month with the highest number of rainy days is July (28.7 days).
The month with the least rainy days is February (9.9 days).
Average snowfall in September
Napo, China
- Average snowfall in September: 0mm
The month with the highest snowfall is January (14mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Napo, China
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).
Average daylight in September /
Average sunshine in September
Napo, China
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 42min).
- Average sunshine in September: 7h and 36min
The month with the most sunshine is April (Average sunshine: 9h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Napo, China
- Average sunshine days in September: 5.1 days
The month with the most sunshine days is December (16 days).
The month with the least sunshine days is July (1.4 days).
Average UV index in September
Napo, China
- Average UV index in September: 5
The months with the highest UV index are April, May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Napo, China
- Average cloud cover in September: 57
The month with the most cloud cover is July (Cloud cover 64).
The month with the least cloud cover is March (Cloud cover 46).
Average visibility in September
Napo, China
- Average visibility in September: 7km
The month with the highest visibility is March (9km).
The months with the lowest visibility are January, June, July, August, September, October and November (7km).
