September weather forecast
Akita, Japan

Weather in September

The first month of the autumn, September, is also a moderately hot month in Akita, Japan, with average temperature fluctuating between 17.9°C (64.2°F) and 23°C (73.4°F).

Temperature

In September, the average high-temperature slightly decreases, from 26.7°C (80.1°F) in August, to a still warm 23°C (73.4°F). In September, the average low-temperature is 17.9°C (64.2°F).

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Akita, during September, the rain falls for 17.3 days and regularly aggregates up to 82mm (3.23") of precipitation. In Akita, during the entire year, the rain falls for 189.8 days and collects up to 1156mm (45.51") of precipitation.

Snowfall

May through October are months without snowfall in Akita, Japan.

Sea temperature

In September, the average sea temperature in Akita, Japan, is 24.2°C (75.6°F).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 24.2°C (75.6°F) water. (FYI: The Olympic swimming competition requires a water temperature between 25°C (77°F) and 28°C (82.4°F).)

Daylight

The average length of the day in Akita is 12.5h.

Sunshine

The average sunshine in Akita is 8.2h.

UV index

The average daily maximum UV index in Akita is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the average humidity in September in Akita?

The average relative humidity in September in Akita, Japan, is 77%.

How many days does it rain in September in Akita?

In Akita, Japan, in September, during 17.3 rainfall days, 82mm (3.23") of precipitation is typically accumulated.

When it does not snow in Akita?

In Akita, Japan, snow does not fall in May through October.

What is the water temperature in September in Akita?

In September, the average sea temperature in Akita is 24.2°C (75.6°F). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 24.2°C (75.6°F) water may be enjoyable.

How many hours of daylight does Akita have in September?

The average length of the day in September in Akita, Japan, is 12.5h.

How long on average sun shines in September in Akita?

In September, the average sunshine is 8.2h.

What is the UV index reading in September in Akita?

The average daily maximum UV index in September in Akita, Japan, is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in September
Akita, Japan

Average temperature in September - Akita, Japan
  • Average high temperature in September: 23°C

The warmest month (with the highest average high temperature) is August (26.7°C).
The month with the lowest average high temperature is January (1.8°C).

  • Average low temperature in September: 17.9°C

The month with the highest average low temperature is August (21.7°C).
The coldest month (with the lowest average low temperature) is February (-1.8°C).

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Average pressure in September
Akita, Japan

Average pressure in September - Akita, Japan
  • Average pressure in September: 1013.7mbar

The month with the highest atmospheric pressure is November (1018.2mbar).
The month with the lowest atmospheric pressure is July (1008.8mbar).

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Average wind speed in September
Akita, Japan

Average wind speed in September - Akita, Japan
  • Average wind speed in September: 13.1km/h

The windiest month (with the highest average wind speed) is December (23.5km/h).
The calmest month (with the lowest average wind speed) is July (11.2km/h).

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Average humidity in September
Akita, Japan

Average humidity in September - Akita, Japan
  • Average humidity in September: 77%

The month with the highest relative humidity is July (85%).
Months with the lowest relative humidity are April and October (74%).

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Average rainfall in September
Akita, Japan

Average rainfall in September - Akita, Japan
  • Average rainfall in September: 82mm

The wettest month (with the highest rainfall) is December (137mm).
The driest month (with the least rainfall) is May (56mm).

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Average rainfall days in September
Akita, Japan

Average rainfall days in September - Akita, Japan
  • Average rainfall days in September: 17.3 days

The month with the highest number of rainy days is November (21.6 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall in September
Akita, Japan

Average snowfall in September - Akita, Japan
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (259mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in September
Akita, Japan

Average snowfall days in September - Akita, Japan
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (20.9 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in September
Akita, Japan

Average sea temperature in September - Akita, Japan
  • Average sea temperature in September: 24.2°C

The best month for swimming (with the highest average sea temperature) is August (25.6°C).
The coldest month (with the lowest average sea temperature) is March (9°C).

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Average daylight in September /
Average sunshine in September
Akita, Japan

Average daylight in September / Average sunshine in September - Akita, Japan
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 8.2h

The month with the most sunshine is August (Average sunshine: 9.7h).
The month with the least sunshine is January (Average sunshine: 1.4h).

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Average sunshine days in September
Akita, Japan

Average sunshine days in September - Akita, Japan
  • Average sunshine days in September: 9.8 days

The month with the most sunshine days is May (14.4 days).
The month with the least sunshine days is January (1.4 days).

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Average UV index in September
Akita, Japan

Average UV index in September - Akita, Japan
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in September
Akita, Japan

Average cloud cover in September - Akita, Japan
  • Average cloud cover in September: 37

The month with the most cloud cover is January (Cloud cover 86).
The month with the least cloud cover is September (Cloud cover 37).

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Average visibility in September
Akita, Japan

Average visibility in September - Akita, Japan
  • Average visibility in September: 10km

Months with the highest visibility are September and October (10km).
The month with the lowest visibility is January (7km).

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