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
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a tropical 31.3°C (88.3°F) in August to a warm 26.5°C (79.7°F). Nanai's average low-temperature during September nights is observed to be a refreshing 19°C (66.2°F).Humidity
In September, the average relative humidity is 76%.Rainfall
In September, in Nanai, the rain falls for 15 days. Throughout September, 78mm (3.07") of precipitation is accumulated. In Nanai, during the entire year, the rain falls for 156.8 days and collects up to 657mm (25.87") of precipitation.Snowfall
In Nanai, snow does not fall in April through October and December.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 05:11 and sunset at 18:08. On the last day of September, sunrise is at 05:34 and sunset at 17:25 JST.
Sunshine
In September, the average sunshine is 7.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 5 during September translates into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Nanai in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September in Nanai?
What is the UV index reading in September?
Average temperature in September
Nanai, Japan
- Average high temperature in September: 26.5°C
The warmest month (with the highest average high temperature) is August (31.3°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in September: 19°C
The month with the highest average low temperature is August (23°C).
The coldest month (with the lowest average low temperature) is January (-0.1°C).
Average pressure in September
Nanai, Japan
- Average pressure in September: 1013.9mbar
The month with the highest atmospheric pressure is November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).
Average wind speed in September
Nanai, Japan
- Average wind speed in September: 8.1km/h
The windiest month (with the highest average wind speed) is April (9.8km/h).
The calmest month (with the lowest average wind speed) is November (7.2km/h).
Average humidity in September
Nanai, Japan
- Average humidity in September: 76%
The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is January (61%).
Average rainfall in September
Nanai, Japan
- Average rainfall in September: 78mm
The wettest month (with the highest rainfall) is July (87mm).
The driest month (with the least rainfall) is December (20mm).
Average rainfall days in September
Nanai, Japan
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is July (19.9 days).
The month with the least rainy days is January (7 days).
Average snowfall in September
Nanai, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (33mm).
The months with the least snowfall are April, May, June, July, August, September, October and December (0mm).
Average snowfall days in September
Nanai, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Nanai, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 7h and 3min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The months with the least sunshine are February and November (Average sunshine: 6h and 6min).
Average sunshine days in September
Nanai, Japan
- Average sunshine days in September: 11.6 days
The month with the most sunshine days is January (22.4 days).
The month with the least sunshine days is June (8 days).
Average UV index in September
Nanai, Japan
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Nanai, Japan
- Average cloud cover in September: 44
The month with the most cloud cover is June (Cloud cover 50).
The month with the least cloud cover is January (Cloud cover 28).
Average visibility in September
Nanai, Japan
- Average visibility in September: 9km
The months with the highest visibility are January, February, March and December (10km).
The month with the lowest visibility is July (8km).
