September weather forecastYobuno, Japan

September

Weather in September

The first month of the autumn, September, is also a moderately hot month in Yobuno, Japan, with an average temperature fluctuating between 26°C (78.8°F) and 20.5°C (68.9°F).

Temperature

Yobuno records a mild change in average high-temperature during September, easing from 29.9°C (85.8°F) in August to a still moderately hot 26°C (78.8°F). September nights in Yobuno, Japan, cool down to an average low-temperature of 20.5°C (68.9°F).

Humidity

In Yobuno, the average relative humidity in September is 79%.

Rainfall

In Yobuno, in September, during 15.3 rainfall days, 75mm (2.95") of precipitation is typically accumulated. Throughout the year, there are 174.9 rainfall days, and 943mm (37.13") of precipitation is accumulated.

Snowfall

In Yobuno, snow does not fall in April through November.

Daylight

In Yobuno, the average length of the day in September is 12h and 23min.
On the first day of September, sunrise is at 05:50 and sunset at 18:42. On the last day of the month, sunrise is at 06:10 and sunset at 18:02 JST.

Sunshine

The average sunshine in September is 8.5h.

UV index

In Yobuno, Japan, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: In September, the maximum UV index of 5 translates into these guidelines:
Heed the precautions - It is counselled to guard against solar damage. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.

Frequently asked questions

The average high-temperature, in September, in Yobuno, is 26°C (78.8°F), while the average low-temperature is 20.5°C (68.9°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in August is calculated to be 37°C (98.6°F).

In Yobuno, Japan, the average relative humidity in September is 79%.

In Yobuno, Japan, during September, the rain falls for 15.3 days and regularly aggregates up to 75mm (2.95") of precipitation.

In Yobuno, snow does not fall in April through November.

In September, the average day length in Yobuno, Japan, is 12h and 23min.

In September, on the first day of the month, sunrise is at 05:50 and sunset at 18:42. On the last day of the month, in Yobuno, sunrise is at 06:10 and sunset at 18:02 JST.

In Yobuno, the average sunshine duration in September is 8.5h.

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Yobuno, Japan

  • Average high temperature in September: 26°C

The warmest month (with the highest average high temperature) is August (29.9°C).
The month with the lowest average high temperature is January (8.2°C).

  • Average low temperature in September: 20.5°C

The month with the highest average low temperature is August (24.1°C).
The coldest month (with the lowest average low temperature) is January (4.1°C).

Average pressure in September
Yobuno, Japan

  • Average pressure in September: 1012.4mbar

The month with the highest atmospheric pressure is January (1021.9mbar).
The month with the lowest atmospheric pressure is June (1008.3mbar).

Average wind speed in September
Yobuno, Japan

  • Average wind speed in September: 10.6km/h

The windiest months (with the highest average wind speed) are January and December (14.7km/h).
The calmest month (with the lowest average wind speed) is June (9.1km/h).

Average humidity in September
Yobuno, Japan

  • Average humidity in September: 79%

The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are January, February and March (71%).

Average rainfall in September
Yobuno, Japan

  • Average rainfall in September: 75mm

The wettest month (with the highest rainfall) is July (183mm).
The driest month (with the least rainfall) is January (44mm).

Average rainfall days in September
Yobuno, Japan

  • Average rainfall days in September: 15.3 days

The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is May (10.3 days).

Average snowfall in September
Yobuno, Japan

  • Average snowfall in September: 0mm

The month with the highest snowfall is January (27mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in September
Yobuno, Japan

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

  • Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 8h and 30min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in September
Yobuno, Japan

  • Average sunshine days in September: 11.3 days

The month with the most sunshine days is May (19.5 days).
The month with the least sunshine days is July (8.9 days).

Average UV index in September
Yobuno, Japan

  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in September
Yobuno, Japan

  • Average cloud cover in September: 39

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in September
Yobuno, Japan

  • Average visibility in September: 10km

The months with the highest visibility are February, March, September, October, November and December (10km).
The months with the lowest visibility are January, April, May, June, July and August (9km).