September weather forecastHaiki, Japan
September weather for Haiki, Japan: September, the first month of the autumn in Haiki, is also a moderately hot month, with an average temperature varying between 21.8°C (71.2°F) and 26.4°C (79.5°F). In Haiki, during September, the rain falls for 14.3 days and regularly aggregates up to 67mm (2.64") of precipitation.
September
Weather in September
September, the first month of the autumn in Haiki, is also a moderately hot month, with an average temperature varying between 21.8°C (71.2°F) and 26.4°C (79.5°F).Temperature
September is characterized by a mild reduction in the average high-temperature, from 29.6°C (85.3°F) in August to a still warm 26.4°C (79.5°F). An average low-temperature of 21.8°C (71.2°F) is witnessed throughout the month of September in Haiki, a mere drop from the daytime peak.Humidity
The average relative humidity in September in Haiki is 79%.Rainfall
In Haiki, during September, the rain falls for 14.3 days and regularly aggregates up to 67mm (2.64") of precipitation. In Haiki, Japan, during the entire year, the rain falls for 169 days and collects up to 900mm (35.43") of precipitation.Snowfall
March through November are months without snowfall in Haiki.Daylight
In Haiki, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 05:55 and sunset at 18:46. On the last day of the month, sunrise is at 06:14 and sunset at 18:07 JST.
Sunshine
In September, the average sunshine is 8.2h.UV index
The average daily maximum UV index in September in Haiki is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, a daily UV index of 6 turns into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Haiki, Japan
- Average high temperature in September: 26.4°C
The warmest month (with the highest average high temperature) is August (29.6°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in September: 21.8°C
The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (5.4°C).
Average pressure in September
Haiki, Japan
- Average pressure in September: 1011.9mbar
The month with the highest atmospheric pressure is January (1022.2mbar).
The month with the lowest atmospheric pressure is June (1008mbar).
Average wind speed in September
Haiki, Japan
- Average wind speed in September: 13.6km/h
The windiest months (with the highest average wind speed) are January and December (16.7km/h).
The calmest month (with the lowest average wind speed) is June (10.6km/h).
Average humidity in September
Haiki, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Haiki, Japan
- Average rainfall in September: 67mm
The wettest month (with the highest rainfall) is July (192mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in September
Haiki, Japan
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is May (9.5 days).
Average snowfall in September
Haiki, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (6mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Haiki, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.6 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
Haiki, Japan
- Average daylight in September: 12h and 24min
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 12min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are January and December (Average sunshine: 4h and 30min).
Average sunshine days in September
Haiki, Japan
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is May (20.2 days).
The months with the least sunshine days are July and December (9.5 days).
Average UV index in September
Haiki, Japan
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Haiki, Japan
- Average cloud cover in September: 38
The months with the most cloud cover are January and December (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 33).
Average visibility in September
Haiki, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, September, October, November and December (10km).
The months with the lowest visibility are May, June, July and August (9km).
