September weather forecastKainan, Japan
September
Weather in September
September, the first month of the autumn in Kainan, is still a warm month, with temperature in the range of an average low of 21.6°C (70.9°F) and an average high of 26.2°C (79.2°F).Temperature
September implies a soft temperature shift, with average high-temperatures reducing from August's warm 29.3°C (84.7°F) to a still moderately hot 26.2°C (79.2°F). September nighttime temperatures in Kainan hover close to the daytime peak with an average of 21.6°C (70.9°F).Humidity
In September, the average relative humidity is 77%.Rainfall
In Kainan, in September, during 14.2 rainfall days, 64mm (2.52") of precipitation is typically accumulated. In Kainan, during the entire year, the rain falls for 173.9 days and collects up to 658mm (25.91") of precipitation.Snowfall
April through November are months without snowfall in Kainan.Sea temperature
In September, the average sea temperature is 26.7°C (80.1°F).Note: Engaging in water activities, such as swimming or diving, in temperatures from 25°C (77°F) to 29°C (84.2°F) is very pleasurable for extended periods, without any discomfort.
Daylight
The average length of the day in September in Kainan is 12h and 24min.On the first day of September, sunrise is at 05:32 and sunset at 18:25. On the last day of the month, sunrise is at 05:53 and sunset at 17:45 JST.
Sunshine
In Kainan, Japan, the average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a regular UV index of 5 translates into these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Alert! UV radiation becomes sharper due to reflections from sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kainan, Japan
- Average high temperature in September: 26.2°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 (8.7°C).
- Average low temperature in September: 21.6°C
The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (4.8°C).
Average pressure in September
Kainan, Japan
- Average pressure in September: 1012.5mbar
The months with the highest atmospheric pressure are January and February (1019.7mbar).
The month with the lowest atmospheric pressure is June (1008.7mbar).
Average wind speed in September
Kainan, Japan
- Average wind speed in September: 12.3km/h
The windiest month (with the highest average wind speed) is January (19.1km/h).
The calmest month (with the lowest average wind speed) is June (11km/h).
Average humidity in September
Kainan, Japan
- Average humidity in September: 77%
The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are January, February and March (70%).
Average rainfall in September
Kainan, Japan
- Average rainfall in September: 64mm
The wettest month (with the highest rainfall) is July (111mm).
The driest months (with the least rainfall) are January and February (30mm).
Average rainfall days in September
Kainan, Japan
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is May (10.8 days).
Average snowfall in September
Kainan, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (14mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Kainan, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.8 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
Kainan, Japan
- Average sea temperature in September: 26.7°C
The best month for swimming (with the highest average sea temperature) is August (27.7°C).
The coldest month (with the lowest average sea temperature) is February (15.6°C).
Average daylight in September /
Average sunshine in September
Kainan, Japan
- Average daylight in September: 12h and 24min
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: 9h and 18min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Kainan, Japan
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is May (18.1 days).
The month with the least sunshine days is December (7.5 days).
Average UV index in September
Kainan, Japan
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Kainan, Japan
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Kainan, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
