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 sea temperature 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
Ishikari, Japan, observes a small decrease in the average high-temperature with the arrival of September, falling from August's moderately hot 23.7°C (74.7°F) to an agreeable 20.2°C (68.4°F). Ishikari observes an average low-temperature of 13.3°C (55.9°F) during September.Humidity
In Ishikari, the average relative humidity in September is 82%.Rainfall
In Ishikari, in September, it is raining for 17.4 days, with typically 83mm (3.27") of accumulated precipitation. In Ishikari, Japan, during the entire year, the rain falls for 169.9 days and collects up to 854mm (33.62") of precipitation.Snowfall
June through September are months without snowfall.Sea temperature
In Ishikari, Japan, the average seawater temperature in September is 20.6°C (69.1°F).Note: The majority of individuals do not enjoy swimming in water that is 20.6°C (69.1°F). Breathing control becomes more challenging as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day is 12h and 31min.On the first day of September, sunrise is at 04:59 and sunset at 18:10. On the last day of the month, sunrise is at 05:31 and sunset at 17:18 JST.
Sunshine
In Ishikari, Japan, the average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September in Ishikari is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What is the average September temperature in Ishikari?
What is the average humidity in September in Ishikari?
How much does it rain in Ishikari in September?
When it does not snow in Ishikari?
Does it snow in Ishikari in September?
What is the sea water temperature in September in Ishikari?
What is the average length of the day in September in Ishikari?
When are sunrise and sunset in September in Ishikari?
How many hours of sunshine does Ishikari have in September?
What is the UV index reading in September in Ishikari?
Average temperature in September
Ishikari, Japan
- Average high temperature in September: 20.2°C
The warmest month (with the highest average high temperature) is August (23.7°C).
The month with the lowest average high temperature is January (-2.8°C).
- Average low temperature in September: 13.3°C
The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is February (-8.5°C).
Average pressure in September
Ishikari, Japan
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is November (1016mbar).
The month with the lowest atmospheric pressure is July (1008.5mbar).
Average wind speed in September
Ishikari, Japan
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is December (16.9km/h).
The calmest months (with the lowest average wind speed) are July and August (10.1km/h).
Average humidity in September
Ishikari, Japan
- Average humidity in September: 82%
The months with the highest relative humidity are January and July (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in September
Ishikari, Japan
- Average rainfall in September: 83mm
The wettest month (with the highest rainfall) is August (123mm).
The driest month (with the least rainfall) is April (45mm).
Average rainfall days in September
Ishikari, Japan
- Average rainfall days in September: 17.4 days
The month with the highest number of rainy days is July (19.9 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in September
Ishikari, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (377mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Ishikari, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (27.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Ishikari, Japan
- Average sea temperature in September: 20.6°C
The best month for swimming (with the highest average sea temperature) is August (21.6°C).
The coldest months (with the lowest average sea temperature) are February and March (5.3°C).
Average daylight in September /
Average sunshine in September
Ishikari, Japan
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 1min
The months with the most sunshine are May and August (Average sunshine: 9h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 0min).
Average sunshine days in September
Ishikari, Japan
- Average sunshine days in September: 8.5 days
The month with the most sunshine days is May (12.1 days).
The month with the least sunshine days is December (2.2 days).
Average UV index in September
Ishikari, Japan
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Ishikari, Japan
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 81).
The month with the least cloud cover is September (Cloud cover 37).
Average visibility in September
Ishikari, Japan
- Average visibility in September: 9km
The month with the highest visibility is October (10km).
The months with the lowest visibility are January, February and December (7km).
Ishikari, Japan
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