September weather forecast
Yanaizu, Japan

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Weather in September

The first month of the autumn, September, is still a warm month in Yanaizu, Japan, with an average temperature fluctuating between 13.9°C (57°F) and 23.3°C (73.9°F).

Temperature

With September's arrival, Yanaizu sees a decrease in average high-temperatures, moving from a moderately hot 28.3°C (82.9°F) in August to a still warm 23.3°C (73.9°F). Yanaizu in September experiences a low-temperature average of 13.9°C (57°F).

Humidity

The average relative humidity in September is 84%.

Rainfall

In Yanaizu, in September, during 16.8 rainfall days, 82mm (3.23") of precipitation is typically accumulated. Throughout the year, there are 202.4 rainfall days, and 1130mm (44.49") of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In Yanaizu, the average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 05:11 and sunset at 18:10. On the last day of the month, sunrise is at 05:35 and sunset at 17:26 JST.

Sunshine

In September, the average sunshine is 7.4h.

UV index

In Yanaizu, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A maximum high daily UV index of 4 during September translates into the following directions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Updated: Jan 31, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the temperature in September in Yanaizu?

In Yanaizu, in September, the average high-temperature is 23.3°C (73.9°F), and the average low-temperature is 13.9°C (57°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is calculated to be 33°C (91.4°F).

What is the average humidity in September in Yanaizu?

In September, the average relative humidity in Yanaizu is 84%.

How many days does it rain in September in Yanaizu?

In Yanaizu, Japan, in September, it is raining for 16.8 days, with typically 82mm (3.23") of accumulated precipitation.

When it does not snow in Yanaizu?

May through October are months without snowfall in Yanaizu.

What is the average length of the day in September in Yanaizu?

The average day length in September is 12h and 26min.

When are sunrise and sunset in September in Yanaizu?

On the first day of September, sunrise is at 05:11 and sunset at 18:10. On the last day of the month, sunrise is at 05:35 and sunset at 17:26 JST.

How long on average sun shines in September in Yanaizu?

In September, the average sunshine duration in Yanaizu, Japan, is 7.4h.

How high is the UV index in September in Yanaizu?

The average daily maximum UV index in September in Yanaizu is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Yanaizu, Japan

Average temperature in September - Yanaizu, Japan
  • Average high temperature in September: 23.3°C

The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (-0.3°C).

  • Average low temperature in September: 13.9°C

The month with the highest average low temperature is August (18.3°C).
The coldest month (with the lowest average low temperature) is February (-6.5°C).

Average pressure in September
Yanaizu, Japan

Average pressure in September - Yanaizu, Japan
  • Average pressure in September: 1014mbar

The month with the highest atmospheric pressure is November (1019mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).

Average wind speed in September
Yanaizu, Japan

Average wind speed in September - Yanaizu, Japan
  • Average wind speed in September: 7km/h

The windiest month (with the highest average wind speed) is January (12.2km/h).
The calmest month (with the lowest average wind speed) is August (6.1km/h).

Average humidity in September
Yanaizu, Japan

Average humidity in September - Yanaizu, Japan
  • Average humidity in September: 84%

The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is May (74%).

Average rainfall in September
Yanaizu, Japan

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

The wettest month (with the highest rainfall) is December (128mm).
The driest month (with the least rainfall) is November (71mm).

Average rainfall days in September
Yanaizu, Japan

Average rainfall days in September - Yanaizu, Japan
  • Average rainfall days in September: 16.8 days

The month with the highest number of rainy days is July (21.6 days).
The month with the least rainy days is January (10.8 days).

Average snowfall in September
Yanaizu, Japan

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

The month with the highest snowfall is January (757mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in September
Yanaizu, Japan

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

The month with the highest number of snowfall days is January (26.4 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
Yanaizu, Japan

Average daylight in September / Average sunshine in September - Yanaizu, Japan
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 7h and 2min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

Average sunshine days in September
Yanaizu, Japan

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

The month with the most sunshine days is May (11.8 days).
The month with the least sunshine days is January (1.7 days).

Average UV index in September
Yanaizu, Japan

Average UV index in September - Yanaizu, 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 and December (UV index 1).

Average cloud cover in September
Yanaizu, Japan

Average cloud cover in September - Yanaizu, Japan
  • Average cloud cover in September: 48

The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is May (Cloud cover 39).

Average visibility in September
Yanaizu, Japan

Average visibility in September - Yanaizu, Japan
  • Average visibility in September: 7km

The months with the highest visibility are April, May, June, October and November (8km).
The months with the lowest visibility are January and February (6km).

Yanaizu, Japan

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