September weather forecast
Kitakyushu, Japan

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Weather in September

The beginning of autumn in September transforms the weather of Kitakyushu greatly, with a plunge in average temperatures to 26°C (78.8°F) from August's peak of 29.9°C (85.8°F). Although the rainy season is past, the city still receives decent amounts of rain, contributing to a comfortable level of humidity. Even as the daylight hours start to contract, the conditions remain quite friendly for outdoor activities. Majority of the month is sunny, making the climate ideal for traditional autumn celebrations.

Temperature

As August transitions into September, Kitakyushu sees a gentle drop in the average high-temperature, transitioning from 29.9°C (85.8°F) to a still warm 26°C (78.8°F). Throughout September, Kitakyushu experiences a low-temperature average of 20.5°C (68.9°F).

Humidity

The average relative humidity in September in Kitakyushu is 79%.

Rainfall

In Kitakyushu, in September, during 15.3 rainfall days, 75mm (2.95") of precipitation is typically accumulated. In Kitakyushu, during the entire year, the rain falls for 174.9 days and collects up to 943mm (37.13") of precipitation.

Snowfall

April through November are months without snowfall.

Sea temperature

In Kitakyushu, Japan, the average seawater temperature in September is 25.9°C (78.6°F).
Note: For swimming, diving, or other water activities, the temperature range of 25°C (77°F) to 29°C (84.2°F) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.

Daylight

In Kitakyushu, the average length of the day in September is 12h and 23min.
On the first day of September in Kitakyushu, sunrise is at 05:50 and sunset at 18:42. On the last day of the month, sunrise is at 06:10 and sunset at 18:02 JST.

Sunshine

In Kitakyushu, Japan, the average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index in Kitakyushu is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 5 during September translates into these guidelines:
Act with care - The need to guard against sun damage is communicated. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Alert! The Sun's UV rays are heightened by the reflection of sand and water.
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Frequently asked questions

What are the temperatures in Kitakyushu in September?

The average high-temperature, in September, in Kitakyushu, is 26°C (78.8°F), while the average low-temperature is 20.5°C (68.9°F). The average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 37°C (98.6°F).

What is the average humidity in September in Kitakyushu?

In Kitakyushu, the average relative humidity in September is 79%.

How many days does it rain in September in Kitakyushu?

In Kitakyushu, in September, during 15.3 rainfall days, 75mm (2.95") of precipitation is typically accumulated.

When it does not snow in Kitakyushu?

In Kitakyushu, snow does not fall in April through November.

What is the water temperature in September in Kitakyushu?

In Kitakyushu, in September, the average water temperature is 25.9°C (78.6°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Kitakyushu have in September?

In Kitakyushu, Japan, the average day length in September is 12h and 23min.

When is the sunrise / sunset in September in Kitakyushu?

In September, on the first day of the month, sunrise is at 05:50 and sunset at 18:42. On the last day of the month, sunrise is at 06:10 and sunset at 18:02 JST.

How long on average sun shines in September in Kitakyushu?

The average sunshine duration in September in Kitakyushu is 8.5h.

How high is the UV index in September in Kitakyushu?

In Kitakyushu, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Kitakyushu, Japan

Average temperature in September - Kitakyushu, Japan
  • Average high temperature in September: 26°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 (8.2°C).

  • Average low temperature in September: 20.5°C

The month with the highest average low temperature is August (24.1°C).
The coldest month (with the lowest average low temperature) is January (4.1°C).

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Average pressure in September
Kitakyushu, Japan

Average pressure in September - Kitakyushu, Japan
  • Average pressure in September: 1012.4mbar

The month with the highest atmospheric pressure is January (1021.9mbar).
The month with the lowest atmospheric pressure is June (1008.3mbar).

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Average wind speed in September
Kitakyushu, Japan

Average wind speed in September - Kitakyushu, Japan
  • Average wind speed in September: 10.6km/h

The windiest months (with the highest average wind speed) are January and December (14.7km/h).
The calmest month (with the lowest average wind speed) is June (9.1km/h).

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Average humidity in September
Kitakyushu, Japan

Average humidity in September - Kitakyushu, Japan
  • Average humidity in September: 79%

The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are January, February and March (71%).

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Average rainfall in September
Kitakyushu, Japan

Average rainfall in September - Kitakyushu, Japan
  • Average rainfall in September: 75mm

The wettest month (with the highest rainfall) is July (183mm).
The driest month (with the least rainfall) is January (44mm).

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Average rainfall days in September
Kitakyushu, Japan

Average rainfall days in September - Kitakyushu, Japan
  • Average rainfall days in September: 15.3 days

The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is May (10.3 days).

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Average snowfall in September
Kitakyushu, Japan

Average snowfall in September - Kitakyushu, Japan
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (27mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in September
Kitakyushu, Japan

Average snowfall days in September - Kitakyushu, Japan
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in September
Kitakyushu, Japan

Average sea temperature in September - Kitakyushu, Japan
  • Average sea temperature in September: 25.9°C

The best month for swimming (with the highest average sea temperature) is August (27.4°C).
The coldest month (with the lowest average sea temperature) is March (13.8°C).

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Average daylight in September /
Average sunshine in September
Kitakyushu, Japan

Average daylight in September / Average sunshine in September - Kitakyushu, Japan
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in September
Kitakyushu, Japan

Average sunshine days in September - Kitakyushu, Japan
  • Average sunshine days in September: 11.3 days

The month with the most sunshine days is May (19.5 days).
The month with the least sunshine days is July (8.9 days).

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Average UV index in September
Kitakyushu, Japan

Average UV index in September - Kitakyushu, 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).

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Average cloud cover in September
Kitakyushu, Japan

Average cloud cover in September - Kitakyushu, Japan
  • Average cloud cover in September: 39

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in September
Kitakyushu, Japan

Average visibility in September - Kitakyushu, Japan
  • Average visibility in September: 10km

The months with the highest visibility are February, March, September, October, November and December (10km).
The months with the lowest visibility are January, April, May, June, July and August (9km).

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Kitakyushu, Japan

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