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
Weather in September
Temperature
Karatsu's September weather features a light decline in high-temperatures, reducing from 29.3°C (84.7°F) in August to a still warm 25.6°C (78.1°F). Registering an almost steady temperature, Karatsu's nights in September see an average low of 21.5°C (70.7°F).Humidity
The average relative humidity in September is 80%.Rainfall
In Karatsu, in September, it is raining for 14.5 days, with typically 32mm (1.26") of accumulated precipitation. Throughout the year, there are 149.2 rainfall days, and 456mm (17.95") of precipitation is accumulated.Snowfall
In Karatsu, snow does not fall in March through November.Daylight
In September, the average length of the day in Karatsu is 12h and 23min.On the first day of the month, sunrise is at 05:54 and sunset at 18:45. On the last day of September, sunrise is at 06:13 and sunset at 18:06 JST.
Sunshine
The average sunshine in September in Karatsu is 7.7h.UV index
In Karatsu, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What are September temperatures in Karatsu?
What is the average humidity in September in Karatsu?
How many days does it rain in September in Karatsu?
When it does not snow in Karatsu?
How many hours of daylight does Karatsu have in September?
When are sunrise and sunset in September in Karatsu?
How long on average sun shines in September in Karatsu?
What is the UV index reading in September in Karatsu?
Average temperature in September
Karatsu, Japan
- Average high temperature in September: 25.6°C
The warmest month (with the highest average high temperature) is August (29.3°C).
The month with the lowest average high temperature is January (8.8°C).
- Average low temperature in September: 21.5°C
The month with the highest average low temperature is August (24.6°C).
The coldest month (with the lowest average low temperature) is January (4.9°C).
Average pressure in September
Karatsu, Japan
- Average pressure in September: 1012.1mbar
The month with the highest atmospheric pressure is January (1022.2mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).
Average wind speed in September
Karatsu, Japan
- Average wind speed in September: 13.5km/h
The windiest month (with the highest average wind speed) is January (16.4km/h).
The calmest month (with the lowest average wind speed) is June (10.7km/h).
Average humidity in September
Karatsu, Japan
- Average humidity in September: 80%
The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are January, February and March (71%).
Average rainfall in September
Karatsu, Japan
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is July (105mm).
The driest month (with the least rainfall) is January (18mm).
Average rainfall days in September
Karatsu, Japan
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is May (9.4 days).
Average snowfall in September
Karatsu, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Karatsu, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Karatsu, 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: 7h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in September
Karatsu, Japan
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is May (19.4 days).
The month with the least sunshine days is July (7.9 days).
Average UV index in September
Karatsu, 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
Karatsu, Japan
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Karatsu, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, August, September, October, November and December (10km).
The months with the lowest visibility are May, June and July (9km).
Karatsu, Japan
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