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 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
The start of September marks an average high-temperature of a still agreeable 20.6°C (69.1°F), hardly distinguishable from the conditions in August. During the nights of September, the average low-temperature holds at an enjoyable 16.1°C (61°F).Humidity
The average relative humidity in September is 81%.Rainfall
April through November are months with the least rain when the rain falls for 1.5 days and typically aggregates up to 2mm (0.08") of rain.Daylight
In Chao, the average length of the day in September is 12h and 4min.On the first day of September, sunrise is at 06:15 and sunset at 18:13. On the last day of the month, sunrise is at 05:59 and sunset at 18:09 -05.
Sunshine
In Chao, the average sunshine in September is 9.6h.UV index
June through November, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 5 translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
What is the average length of the day in September in Chao?
When is the sunrise / sunset in September?
How long on average sun shines in September in Chao?
What are the months with the lowest UV index?
What is the UV index reading in September?
Average temperature in September
Chao, Peru
- Average high temperature in September: 20.6°C
The warmest month (with the highest average high temperature) is February (26.3°C).
The month with the lowest average high temperature is August (20.4°C).
- Average low temperature in September: 16.1°C
The month with the highest average low temperature is March (22.4°C).
The coldest month (with the lowest average low temperature) is August (16°C).
Average pressure in September
Chao, Peru
- Average pressure in September: 1015.2mbar
The month with the highest atmospheric pressure is August (1015.5mbar).
The month with the lowest atmospheric pressure is February (1013mbar).
Average wind speed in September
Chao, Peru
- Average wind speed in September: 14.1km/h
The windiest month (with the highest average wind speed) is July (14.3km/h).
The calmest month (with the lowest average wind speed) is February (10km/h).
Average humidity in September
Chao, Peru
- Average humidity in September: 81%
The months with the highest relative humidity are May, June, November and December (82%).
The month with the lowest relative humidity is February (77%).
Average rainfall in September
Chao, Peru
- Average rainfall in September: 2mm
The wettest month (with the highest rainfall) is March (5mm).
The driest months (with the least rainfall) are April, May, June, July, August, September, October and November (2mm).
Average rainfall days in September
Chao, Peru
- Average rainfall days in September: 1.5 days
The month with the highest number of rainy days is March (6.2 days).
The month with the least rainy days is September (1.5 days).
Average daylight in September /
Average sunshine in September
Chao, Peru
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 36min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is October (Average sunshine: 11h and 24min).
The month with the least sunshine is May (Average sunshine: 8h and 42min).
Average sunshine days in September
Chao, Peru
- Average sunshine days in September: 20 days
The month with the most sunshine days is April (24.5 days).
The month with the least sunshine days is June (17.7 days).
Average UV index in September
Chao, Peru
- Average UV index in September: 5
The months with the highest UV index are January, February, March, April, May and December (UV index 6).
The months with the lowest UV index are June, July, August, September, October and November (UV index 5).
Average cloud cover in September
Chao, Peru
- Average cloud cover in September: 23
The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Chao, Peru
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
