September weather forecast
Tannowa, Japan

September

Weather in September

September, the first month of the autumn in Tannowa, is still a warm month, with an average temperature varying between 21.7°C (71.1°F) and 26.3°C (79.3°F).

Temperature

With the arrival of September, Tannowa notices a mild change in the average high-temperature, sliding from August's warm 29.3°C (84.7°F) to a still moderately hot 26.3°C (79.3°F). Tannowa's nights throughout September are marked by an average low temperature of 21.7°C (71.1°F), a minor drop from the day's high.

Humidity

In Tannowa, the average relative humidity in September is 76%.

Rainfall

In Tannowa, in September, during 15.1 rainfall days, 80mm (3.15") of precipitation is typically accumulated. In Tannowa, during the entire year, the rain falls for 174.8 days and collects up to 674mm (26.54") of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

In Tannowa, the average length of the day in September is 12h and 24min.
On the first day of September, sunrise is at 05:32 and sunset at 18:25. On the last day of the month, sunrise is at 05:53 and sunset at 17:45 JST.

Sunshine

In Tannowa, the average sunshine in September is 9.1h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: During September, 5 as the daily maximum UV index converts into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.

Frequently asked questions

What is the usual temperature for Tannowa in September?
The high-temperature, in September, in Tannowa, records 26.3°C (79.3°F), while the low-temperature is 21.7°C (71.1°F). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 35°C (95°F).
What is the average humidity in September in Tannowa?
In Tannowa, the average relative humidity in September is 76%.
How many days does it rain in September in Tannowa?
In Tannowa, Japan, during September, the rain falls for 15.1 days and regularly aggregates up to 80mm (3.15") of precipitation.
When it does not snow in Tannowa?
In Tannowa, Japan, snow does not fall in April through November.
What is the average length of the day in September in Tannowa?
The average day length in September in Tannowa, Japan, is 12h and 24min.
When are sunrise and sunset in September in Tannowa?
On the first day of September, sunrise is at 05:32 and sunset at 18:25. On the last day of the month, sunrise is at 05:53 and sunset at 17:45 JST.
How many hours of sunshine does Tannowa have in September?
The average sunshine duration in September in Tannowa is 9.1h.
How high is the UV index in September in Tannowa?
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Tannowa, Japan
Average temperature in September
Tannowa, Japan
  • Average high temperature in September: 26.3°C

The warmest month (with the highest average high temperature) is August (29.3°C).
The month with the lowest average high temperature is January (8.7°C).

  • Average low temperature in September: 21.7°C

The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (4.8°C).

Average pressure in September - Tannowa, Japan
Average pressure in September
Tannowa, Japan
  • Average pressure in September: 1012.4mbar

The months with the highest atmospheric pressure are January and February (1019.7mbar).
The month with the lowest atmospheric pressure is June (1008.7mbar).

Average wind speed in September - Tannowa, Japan
Average wind speed in September
Tannowa, Japan
  • Average wind speed in September: 12.5km/h

The windiest month (with the highest average wind speed) is January (19.1km/h).
The calmest month (with the lowest average wind speed) is June (11km/h).

Average humidity in September - Tannowa, Japan
Average humidity in September
Tannowa, Japan
  • Average humidity in September: 76%

The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are January, February and March (70%).

Average rainfall in September - Tannowa, Japan
Average rainfall in September
Tannowa, Japan
  • Average rainfall in September: 80mm

The wettest month (with the highest rainfall) is July (111mm).
The driest months (with the least rainfall) are January and February (30mm).

Average rainfall days in September - Tannowa, Japan
Average rainfall days in September
Tannowa, Japan
  • Average rainfall days in September: 15.1 days

The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is May (10.8 days).

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

The month with the highest snowfall is January (14mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

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

The month with the highest number of snowfall days is January (3.8 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 - Tannowa, Japan
Average daylight in September /
Average sunshine in September
Tannowa, Japan
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).

Average sunshine days in September - Tannowa, Japan
Average sunshine days in September
Tannowa, Japan
  • Average sunshine days in September: 11.9 days

The month with the most sunshine days is May (18.1 days).
The month with the least sunshine days is December (7.5 days).

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

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

Average cloud cover in September - Tannowa, Japan
Average cloud cover in September
Tannowa, Japan
  • Average cloud cover in September: 35

The month with the most cloud cover is January (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 28).

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

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

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