September weather forecastAnnaka, Japan
September
Weather in September
September, the first month of the autumn in Annaka, is also a moderately hot month, with temperature in the range of an average low of 14.8°C (58.6°F) and an average high of 23.5°C (74.3°F).Temperature
In September, the average high-temperature marginally drops from 28.4°C (83.1°F) in August to a still warm 23.5°C (74.3°F). September nights are marked by an average temperature drop to a mild 14.8°C (58.6°F).Humidity
The months with the highest humidity are July and September, with an average relative humidity of 81%.Rainfall
In Annaka, in September, during 17.2 rainfall days, 85mm (3.35") of precipitation is typically accumulated. In Annaka, during the entire year, the rain falls for 174.1 days and collects up to 874mm (34.41") of precipitation.Snowfall
May through October are months without snowfall in Annaka, Japan.Daylight
In September, the average length of the day in Annaka is 12h and 25min.On the first day of September in Annaka, sunrise is at 05:16 and sunset at 18:12. On the last day of the month, sunrise is at 05:38 and sunset at 17:29 JST.
Sunshine
The average sunshine in September is 8.1h.UV index
In Annaka, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Be vigilant - Preventing sunburn is recommended. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Annaka, Japan
- Average high temperature in September: 23.5°C
The warmest month (with the highest average high temperature) is August (28.4°C).
The month with the lowest average high temperature is January (3.4°C).
- Average low temperature in September: 14.8°C
The month with the highest average low temperature is August (19.3°C).
The coldest month (with the lowest average low temperature) is January (-4.4°C).
Average pressure in September
Annaka, Japan
- Average pressure in September: 1013.9mbar
The month with the highest atmospheric pressure is November (1018.8mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).
Average wind speed in September
Annaka, Japan
- Average wind speed in September: 6.5km/h
The windiest month (with the highest average wind speed) is January (10km/h).
The calmest month (with the lowest average wind speed) is July (5.4km/h).
Average humidity in September
Annaka, Japan
- Average humidity in September: 81%
The months with the highest relative humidity are July and September (81%).
The months with the lowest relative humidity are March and April (70%).
Average rainfall in September
Annaka, Japan
- Average rainfall in September: 85mm
The wettest month (with the highest rainfall) is July (149mm).
The driest month (with the least rainfall) is December (19mm).
Average rainfall days in September
Annaka, Japan
- Average rainfall days in September: 17.2 days
The month with the highest number of rainy days is July (24.7 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in September
Annaka, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (72mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Annaka, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Annaka, Japan
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is May (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in September
Annaka, Japan
- Average sunshine days in September: 9.3 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (4.5 days).
Average UV index in September
Annaka, Japan
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Annaka, Japan
- Average cloud cover in September: 44
The months with the most cloud cover are June and July (Cloud cover 47).
The months with the least cloud cover are November and December (Cloud cover 27).
Average visibility in September
Annaka, Japan
- Average visibility in September: 8km
The months with the highest visibility are January and December (10km).
The months with the lowest visibility are June, July, August, September and October (8km).
