September weather forecastTsudanuma, Japan

September

Weather in September

The first month of the autumn, September, is still a warm month in Tsudanuma, Japan, with an average temperature varying between 21.3°C (70.3°F) and 26.9°C (80.4°F).

Temperature

In Tsudanuma, entering September brings a subtle temperature decrement, reducing from August's tropical 30.8°C (87.4°F) to a moderately hot 26.9°C (80.4°F). Nightly temperatures in Tsudanuma, Japan, drop to an average low of 21.3°C (70.3°F) in September.

Humidity

In Tsudanuma, Japan, the average relative humidity in September is 75%.

Rainfall

In Tsudanuma, in September, it is raining for 18.1 days, with typically 122mm (4.8") of accumulated precipitation. In Tsudanuma, during the entire year, the rain falls for 170.4 days and collects up to 932mm (36.69") of precipitation.

Snowfall

In Tsudanuma, snow does not fall in March through December.

Daylight

The average length of the day in September in Tsudanuma is 12h and 25min.
On the first day of the month, sunrise is at 05:12 and sunset at 18:07. On the last day of September, sunrise is at 05:34 and sunset at 17:25 JST.

Sunshine

The average sunshine in September in Tsudanuma is 7.5h.

UV index

In Tsudanuma, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, a daily UV index of 6 turns into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun.

Frequently asked questions

In Tsudanuma, in September, the average high-temperature is 26.9°C (80.4°F), and the average low-temperature is 21.3°C (70.3°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in August is calculated to be 39°C (102.2°F).

In September, the average relative humidity in Tsudanuma is 75%.

In Tsudanuma, in September, during 18.1 rainfall days, 122mm (4.8") of precipitation is typically accumulated.

In Tsudanuma, Japan, snow does not fall in March through December.

The average day length in September is 12h and 25min.

In September, on the first day of the month, sunrise is at 05:12 and sunset at 18:07. On the last day of the month, in Tsudanuma, sunrise is at 05:34 and sunset at 17:25 JST.

In September, the average sunshine duration in Tsudanuma is 7.5h.

The average daily maximum UV index in September in Tsudanuma, Japan, is 6. A UV Index reading of 6 to 7 represents a high health threat 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Tsudanuma, Japan

  • Average high temperature in September: 26.9°C

The warmest month (with the highest average high temperature) is August (30.8°C).
The month with the lowest average high temperature is January (8.8°C).

  • Average low temperature in September: 21.3°C

The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).

Average pressure in September
Tsudanuma, Japan

  • Average pressure in September: 1013.4mbar

The month with the highest atmospheric pressure is November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).

Average wind speed in September
Tsudanuma, Japan

  • Average wind speed in September: 12.6km/h

The windiest month (with the highest average wind speed) is April (15.1km/h).
The calmest month (with the lowest average wind speed) is November (11.8km/h).

Average humidity in September
Tsudanuma, Japan

  • Average humidity in September: 75%

The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is January (61%).

Average rainfall in September
Tsudanuma, Japan

  • Average rainfall in September: 122mm

The wettest month (with the highest rainfall) is October (129mm).
The driest months (with the least rainfall) are January and December (40mm).

Average rainfall days in September
Tsudanuma, Japan

  • Average rainfall days in September: 18.1 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (7.9 days).

Average snowfall in September
Tsudanuma, Japan

  • Average snowfall in September: 0mm

The month with the highest snowfall is February (43mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in September
Tsudanuma, Japan

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.8 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
Tsudanuma, Japan

  • Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 7h and 30min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).

Average sunshine days in September
Tsudanuma, Japan

  • Average sunshine days in September: 9.7 days

The month with the most sunshine days is January (21.3 days).
The month with the least sunshine days is September (9.7 days).

Average UV index in September
Tsudanuma, Japan

  • Average UV index in September: 6

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

Average cloud cover in September
Tsudanuma, Japan

  • Average cloud cover in September: 43

The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is January (Cloud cover 29).

Average visibility in September
Tsudanuma, Japan

  • Average visibility in September: 9km

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