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
September
Weather in September
Temperature
August's transformation into September witnesses an average high-temperature of an enjoyable 18.6°C (65.5°F), noting a minor change from the preceding month. During September, the nighttime temperatures in Wakkanai align closely with the daytime averages, measuring a still refreshing 16.1°C (61°F).Humidity
In Wakkanai, the average relative humidity in September is 76%.Rainfall
In Wakkanai, Japan, in September, it is raining for 15.7 days, with typically 65mm (2.56") of accumulated precipitation. In Wakkanai, during the entire year, the rain falls for 134.7 days and collects up to 731mm (28.78") of precipitation.Snowfall
June through September are months without snowfall in Wakkanai.Sea temperature
In September, the average sea temperature is 19.3°C (66.7°F).Note: Most individuals do not find swimming at 19.3°C (66.7°F) to be enjoyable. As the water temperature declines below 21°C (69.8°F), maintaining control over one's breathing becomes harder.
Daylight
In Wakkanai, the average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 04:54 and sunset at 18:11. On the last day of September, in Wakkanai, Japan, sunrise is at 05:30 and sunset at 17:16 JST.
Sunshine
In Wakkanai, the average sunshine in September is 8h.UV index
July through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In September, a regular UV index of 5 translates into these guidelines:
Undertake precautions - Obligation exists to protect against skin and eye damage. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Wakkanai in September?
What is the average humidity in September in Wakkanai?
How many days does it rain in September in Wakkanai?
When it does not snow in Wakkanai?
Does it snow in Wakkanai in September?
How cold is the water in September in Wakkanai?
How many hours of daylight does Wakkanai have in September?
What time are sunrise and sunset in September in Wakkanai?
How many hours of sunshine does Wakkanai have in September?
When is the highest UV index in Wakkanai?
What is the UV index reading in September in Wakkanai?
Average temperature in September
Wakkanai, Japan
- Average high temperature in September: 18.6°C
The warmest month (with the highest average high temperature) is August (20.3°C).
The month with the lowest average high temperature is January (-2.9°C).
- Average low temperature in September: 16.1°C
The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is February (-5.7°C).
Average pressure in September
Wakkanai, Japan
- Average pressure in September: 1012.6mbar
The months with the highest atmospheric pressure are October and November (1014.1mbar).
The month with the lowest atmospheric pressure is July (1008.3mbar).
Average wind speed in September
Wakkanai, Japan
- Average wind speed in September: 20.8km/h
The windiest month (with the highest average wind speed) is December (28.3km/h).
The calmest month (with the lowest average wind speed) is July (17.8km/h).
Average humidity in September
Wakkanai, Japan
- Average humidity in September: 76%
The month with the highest relative humidity is July (88%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Wakkanai, Japan
- Average rainfall in September: 65mm
The wettest month (with the highest rainfall) is August (102mm).
The driest month (with the least rainfall) is April (35mm).
Average rainfall days in September
Wakkanai, Japan
- Average rainfall days in September: 15.7 days
The month with the highest number of rainy days is October (18.4 days).
The month with the least rainy days is January (2.1 days).
Average snowfall in September
Wakkanai, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is December (175mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Wakkanai, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (21.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Wakkanai, Japan
- Average sea temperature in September: 19.3°C
The best month for swimming (with the highest average sea temperature) is August (19.7°C).
The coldest month (with the lowest average sea temperature) is February (2.7°C).
Average daylight in September /
Average sunshine in September
Wakkanai, Japan
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 8h and 24min).
The month with the least sunshine is January (Average sunshine: 1h and 6min).
Average sunshine days in September
Wakkanai, Japan
- Average sunshine days in September: 10.8 days
The month with the most sunshine days is May (15.3 days).
The month with the least sunshine days is December (2 days).
Average UV index in September
Wakkanai, Japan
- Average UV index in September: 5
The months with the highest UV index are July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Wakkanai, Japan
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 90).
The month with the least cloud cover is September (Cloud cover 37).
Average visibility in September
Wakkanai, Japan
- Average visibility in September: 10km
The months with the highest visibility are September and October (10km).
The months with the lowest visibility are January and December (7km).
