September weather forecastUnoke, Japan

September

Weather in September

September, the first month of the autumn in Unoke, is also a moderately hot month, with temperature in the range of an average high of 24.5°C (76.1°F) and an average low of 18.3°C (64.9°F).

Temperature

September brings a slight decrease in temperature, down from 29.1°C (84.4°F) in August to a still warm 24.5°C (76.1°F). Unoke records an average nighttime low of 18.3°C (64.9°F) in September.

Humidity

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

Rainfall

In Unoke, in September, it is raining for 15.3 days, with typically 79mm (3.11") of accumulated precipitation. In Unoke, during the entire year, the rain falls for 176.3 days and collects up to 820mm (32.28") of precipitation.

Snowfall

In Unoke, snow does not fall in May through November.

Daylight

In Unoke, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 05:24 and sunset at 18:21. On the last day of September, in Unoke, sunrise is at 05:47 and sunset at 17:38 JST.

Sunshine

In September, the average sunshine is 8.8h.

UV index

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 5 in September translates into these instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Enhance your sun protection with tightly woven, yet airy clothing.

Frequently asked questions

The high-temperature, in September, in Unoke, records 24.5°C (76.1°F), while the low-temperature is 18.3°C (64.9°F). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 35°C (95°F).

In September, the average relative humidity is 79%.

In Unoke, during September, the rain falls for 15.3 days and regularly aggregates up to 79mm (3.11") of precipitation.

May through November are months without snowfall.

In Unoke, the average day length in September is 12h and 26min.

On the first day of September, sunrise is at 05:24 and sunset at 18:21. On the last day of the month, sunrise is at 05:47 and sunset at 17:38 JST.

In September, the average sunshine duration is 8.8h.

In Unoke, Japan, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health 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 days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Unoke, Japan

  • Average high temperature in September: 24.5°C

The warmest month (with the highest average high temperature) is August (29.1°C).
The month with the lowest average high temperature is January (3.8°C).

  • Average low temperature in September: 18.3°C

The month with the highest average low temperature is August (22.3°C).
The coldest month (with the lowest average low temperature) is January (-0.6°C).

Average pressure in September
Unoke, Japan

  • Average pressure in September: 1013.6mbar

The month with the highest atmospheric pressure is February (1019.5mbar).
The month with the lowest atmospheric pressure is June (1009mbar).

Average wind speed in September
Unoke, Japan

  • Average wind speed in September: 9.2km/h

The windiest month (with the highest average wind speed) is December (13.3km/h).
The calmest month (with the lowest average wind speed) is June (8km/h).

Average humidity in September
Unoke, Japan

  • Average humidity in September: 79%

The months with the highest relative humidity are January and July (82%).
The month with the lowest relative humidity is May (72%).

Average rainfall in September
Unoke, Japan

  • Average rainfall in September: 79mm

The wettest month (with the highest rainfall) is July (107mm).
The driest month (with the least rainfall) is February (44mm).

Average rainfall days in September
Unoke, Japan

  • Average rainfall days in September: 15.3 days

The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is February (10.9 days).

Average snowfall in September
Unoke, Japan

  • Average snowfall in September: 0mm

The month with the highest snowfall is January (131mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).

Average snowfall days in September
Unoke, Japan

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).

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

  • Average daylight in September: 12h and 24min

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

  • Average sunshine in September: 8h and 48min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

Average sunshine days in September
Unoke, Japan

  • Average sunshine days in September: 12.6 days

The month with the most sunshine days is May (18 days).
The month with the least sunshine days is July (8.9 days).

Average UV index in September
Unoke, 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 1).

Average cloud cover in September
Unoke, Japan

  • Average cloud cover in September: 36

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in September
Unoke, Japan

  • Average visibility in September: 10km

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