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
The start of September signals a gentle decrease in the average high-temperature, transitioning from a warm 29.9°C (85.8°F) in August to a still moderately hot 25.8°C (78.4°F). An average nighttime temperature of 19.4°C (66.9°F) is noted during the month of September.Humidity
The average relative humidity in September is 82%.Rainfall
In Nakatsu, during September, the rain falls for 16.5 days and regularly aggregates up to 94mm (3.7") of precipitation. Throughout the year, in Nakatsu, there are 177.1 rainfall days, and 952mm (37.48") of precipitation is accumulated.Snowfall
April through November are months without snowfall.Sea temperature
In September, the average sea temperature in Nakatsu, Japan, is 25.3°C (77.5°F).Note: Water temperatures ranging between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, making swimming, diving, and similar water activities pleasurable for extended periods.
Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 05:49 and sunset at 18:41. On the last day of the month, sunrise is at 06:08 and sunset at 18:01 JST.
Sunshine
In Nakatsu, the average sunshine in September is 8.2h.UV index
In Nakatsu, Japan, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In September, a regular UV index of 5 translates into these guidelines:
Be vigilant - Preventing sunburn is recommended. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Boost your sun resistance with garments that are densely woven yet spacious. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.
Frequently asked questions
What is the average September temperature in Nakatsu?
What is the average humidity in September in Nakatsu?
How much does it rain in Nakatsu in September?
When it does not snow in Nakatsu?
How warm is the water in September in Nakatsu?
How many hours of daylight does Nakatsu have in September?
When are sunrise and sunset in September in Nakatsu?
How many hours of sunshine does Nakatsu have in September?
How high is the UV index in September in Nakatsu?
Average temperature in September
Nakatsu, Japan
- Average high temperature in September: 25.8°C
The warmest month (with the highest average high temperature) is August (29.9°C).
The month with the lowest average high temperature is January (8.1°C).
- Average low temperature in September: 19.4°C
The month with the highest average low temperature is August (22.9°C).
The coldest month (with the lowest average low temperature) is January (2.9°C).
Average pressure in September
Nakatsu, Japan
- Average pressure in September: 1012.3mbar
The month with the highest atmospheric pressure is January (1021.7mbar).
The month with the lowest atmospheric pressure is June (1008.3mbar).
Average wind speed in September
Nakatsu, Japan
- Average wind speed in September: 7.7km/h
The windiest month (with the highest average wind speed) is January (11.8km/h).
The calmest month (with the lowest average wind speed) is June (7.2km/h).
Average humidity in September
Nakatsu, Japan
- Average humidity in September: 82%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is March (73%).
Average rainfall in September
Nakatsu, Japan
- Average rainfall in September: 94mm
The wettest month (with the highest rainfall) is July (178mm).
The driest month (with the least rainfall) is January (39mm).
Average rainfall days in September
Nakatsu, Japan
- Average rainfall days in September: 16.5 days
The month with the highest number of rainy days is July (22.1 days).
The month with the least rainy days is January (11.3 days).
Average snowfall in September
Nakatsu, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (18mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Nakatsu, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Nakatsu, Japan
- Average sea temperature in September: 25.3°C
The best month for swimming (with the highest average sea temperature) is August (26.5°C).
The coldest month (with the lowest average sea temperature) is February (11.8°C).
Average daylight in September /
Average sunshine in September
Nakatsu, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Nakatsu, Japan
- Average sunshine days in September: 10.8 days
The month with the most sunshine days is May (18 days).
The month with the least sunshine days is July (6.5 days).
Average UV index in September
Nakatsu, 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
Nakatsu, Japan
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Nakatsu, Japan
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, August, September, October, November and December (9km).
The months with the lowest visibility are June and July (8km).
Nakatsu, Japan
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