September weather forecastHatari, Japan

September

Weather in September

September, the first month of the autumn in Hatari, is still a warm month, with an average temperature varying between 20.1°C (68.2°F) and 25.5°C (77.9°F).

Temperature

Hatari in September experiences a gentle temperature dip, with average high-temperatures reducing from 29.2°C (84.6°F) in August to a still warm 25.5°C (77.9°F). During September, the temperature is averaged to a low of 20.1°C (68.2°F) at night.

Humidity

In Hatari, the average relative humidity in September is 80%.

Rainfall

In Hatari, in September, it is raining for 15.6 days, with typically 66mm (2.6") of accumulated precipitation. In Hatari, during the entire year, the rain falls for 162.8 days and collects up to 749mm (29.49") of precipitation.

Snowfall

March through November are months without snowfall.

Daylight

In Hatari, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 05:43 and sunset at 18:35. On the last day of September, sunrise is at 06:03 and sunset at 17:55 JST.

Sunshine

In September, the average sunshine is 9.4h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Employ a wide-brim hat for potent defense against up to 50% of UV rays.

Frequently asked questions

The high-temperature during September is 25.5°C (77.9°F) and the low-temperature is 20.1°C (68.2°F). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 35°C (95°F).

In September, the average relative humidity is 80%.

In Hatari, in September, during 15.6 rainfall days, 66mm (2.6") of precipitation is typically accumulated.

In Hatari, snow does not fall in March through November.

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

In September, on the first day of the month, sunrise is at 05:43 and sunset at 18:35. On the last day of the month, sunrise is at 06:03 and sunset at 17:55 JST.

The average sunshine duration in September is 9.4h.

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Hatari, Japan

  • Average high temperature in September: 25.5°C

The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (8°C).

  • Average low temperature in September: 20.1°C

The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is January (2.9°C).

Average pressure in September
Hatari, Japan

  • Average pressure in September: 1012.4mbar

The month with the highest atmospheric pressure is January (1021mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).

Average wind speed in September
Hatari, Japan

  • Average wind speed in September: 8.1km/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 June (6.6km/h).

Average humidity in September
Hatari, Japan

  • Average humidity in September: 80%

The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are January, February and March (72%).

Average rainfall in September
Hatari, Japan

  • Average rainfall in September: 66mm

The wettest month (with the highest rainfall) is June (149mm).
The driest month (with the least rainfall) is January (24mm).

Average rainfall days in September
Hatari, Japan

  • Average rainfall days in September: 15.6 days

The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in September
Hatari, Japan

  • Average snowfall in September: 0mm

The month with the highest snowfall is December (6mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).

Average snowfall days in September
Hatari, Japan

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (1.3 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
Hatari, 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: 9h and 54min).

  • Average sunshine in September: 9h and 24min

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).

Average sunshine days in September
Hatari, Japan

  • Average sunshine days in September: 11.6 days

The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is August (6.4 days).

Average UV index in September
Hatari, 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
Hatari, Japan

  • Average cloud cover in September: 35

The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in September
Hatari, Japan

  • Average visibility in September: 10km

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