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 sea temperature 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
Weather in September
Temperature
September's onset introduces a mild reduction in the average high-temperature, from a moderately hot 29°C (84.2°F) in August to a still warm 24.7°C (76.5°F). Nanao documents a consistent average low-temperature of 20.6°C (69.1°F) at night during September.Humidity
In September, the average relative humidity is 77%.Rainfall
In Nanao, Japan, in September, it is raining for 15.8 days, with typically 129mm (5.08") of accumulated precipitation. In Nanao, during the entire year, the rain falls for 197.7 days and collects up to 1451mm (57.13") of precipitation.Snowfall
In Nanao, snow does not fall in May through November.Sea temperature
In Nanao, in September, the average water temperature is 25.2°C (77.4°F).Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.
Daylight
The average length of the day in September in Nanao is 12h and 26min.On the first day of September, sunrise is at 05:23 and sunset at 18:21. On the last day of the month, sunrise is at 05:46 and sunset at 17:37 JST.
Sunshine
In September, the average sunshine is 8.3h.UV index
In September, the average daily maximum UV index in Nanao is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 5 in September translates into these instructions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. To guard against the harmful effects of the Sun, minimize exposure during midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be on guard! The reflective nature of sand and water boosts UV exposure.
Frequently asked questions
What is the temperature in September in Nanao?
What is the average humidity in September in Nanao?
How many days does it rain in September in Nanao?
When it does not snow in Nanao?
What is the water temperature in September in Nanao?
How many hours of daylight does Nanao have in September?
When are sunrise and sunset in September in Nanao?
How many hours of sunshine does Nanao have in September?
What is the UV index intensity in September in Nanao?
Average temperature in September
Nanao, Japan
- Average high temperature in September: 24.7°C
The warmest month (with the highest average high temperature) is August (29°C).
The month with the lowest average high temperature is January (5.2°C).
- Average low temperature in September: 20.6°C
The month with the highest average low temperature is August (23.8°C).
The coldest months (with the lowest average low temperature) are January and February (1.8°C).
Average pressure in September
Nanao, Japan
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is February (1019.5mbar).
The month with the lowest atmospheric pressure is June (1009mbar).
Average wind speed in September
Nanao, Japan
- Average wind speed in September: 11.7km/h
The windiest month (with the highest average wind speed) is December (17.3km/h).
The calmest month (with the lowest average wind speed) is June (9.6km/h).
Average humidity in September
Nanao, Japan
- Average humidity in September: 77%
The month with the highest relative humidity is July (83%).
The months with the lowest relative humidity are March, April and May (73%).
Average rainfall in September
Nanao, Japan
- Average rainfall in September: 129mm
The wettest month (with the highest rainfall) is July (167mm).
The driest month (with the least rainfall) is May (76mm).
Average rainfall days in September
Nanao, Japan
- Average rainfall days in September: 15.8 days
The month with the highest number of rainy days is December (23.4 days).
The month with the least rainy days is May (12 days).
Average snowfall in September
Nanao, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (390mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Nanao, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Nanao, Japan
- Average sea temperature in September: 25.2°C
The best month for swimming (with the highest average sea temperature) is August (26.8°C).
The coldest month (with the lowest average sea temperature) is March (10.4°C).
Average daylight in September /
Average sunshine in September
Nanao, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Nanao, Japan
- Average sunshine days in September: 13.2 days
The month with the most sunshine days is May (17.7 days).
The month with the least sunshine days is December (3.7 days).
Average UV index in September
Nanao, Japan
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Nanao, Japan
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are May and August (Cloud cover 36).
Average visibility in September
Nanao, Japan
- Average visibility in September: 9km
The month with the highest visibility is October (10km).
The month with the lowest visibility is January (8km).
Nanao, Japan
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