September weather forecastSanrizuka, Japan

September

Weather in September

The first month of the autumn, September, is also a moderately hot month in Sanrizuka, Japan, with an average temperature ranging between min 21.8°C (71.2°F) and max 26.4°C (79.5°F).

Temperature

September signifies a minor drop in average high-temperature, transitioning from a hot 30.1°C (86.2°F) in August to a moderately hot 26.4°C (79.5°F). September nights in Sanrizuka document an average temperature reading of 21.8°C (71.2°F).

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Sanrizuka, Japan, during September, the rain falls for 18.5 days and regularly aggregates up to 123mm (4.84") of precipitation. In Sanrizuka, during the entire year, the rain falls for 188.7 days and collects up to 1052mm (41.42") of precipitation.

Snowfall

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

Daylight

In Sanrizuka, Japan, the average length of the day in September is 12h and 25min.
On the first day of September in Sanrizuka, sunrise is at 05:10 and sunset at 18:06. On the last day of the month, sunrise is at 05:32 and sunset at 17:24 JST.

Sunshine

The average sunshine in September is 7.6h.

UV index

In Sanrizuka, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, the maximum UV index of 6 suggests these recommendations:
Deflect overexposure. Sun protection is a necessity. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.

Frequently asked questions

An average high-temperature, in September, in Sanrizuka, is 26.4°C (79.5°F) and the average low-temperature is 21.8°C (71.2°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is appraised at 37°C (98.6°F).

In September, the average relative humidity in Sanrizuka, Japan, is 77%.

In September, in Sanrizuka, the rain falls for 18.5 days. Throughout September, 123mm (4.84") of precipitation is accumulated.

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

In Sanrizuka, Japan, the average day length in September is 12h and 25min.

On the first day of September, sunrise is at 05:10 and sunset at 18:06. On the last day of the month, sunrise is at 05:32 and sunset at 17:24 JST.

In September, the average sunshine duration in Sanrizuka is 7.6h.

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to 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 days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Sanrizuka, Japan

  • Average high temperature in September: 26.4°C

The warmest month (with the highest average high temperature) is August (30.1°C).
The month with the lowest average high temperature is January (8.9°C).

  • Average low temperature in September: 21.8°C

The month with the highest average low temperature is August (24.6°C).
The coldest month (with the lowest average low temperature) is January (3.8°C).

Average pressure in September
Sanrizuka, Japan

  • Average pressure in September: 1013.4mbar

The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).

Average wind speed in September
Sanrizuka, Japan

  • Average wind speed in September: 13.8km/h

The windiest month (with the highest average wind speed) is March (16.8km/h).
The calmest month (with the lowest average wind speed) is June (12.8km/h).

Average humidity in September
Sanrizuka, Japan

  • Average humidity in September: 77%

The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is January (61%).

Average rainfall in September
Sanrizuka, Japan

  • Average rainfall in September: 123mm

The wettest month (with the highest rainfall) is October (144mm).
The driest month (with the least rainfall) is January (45mm).

Average rainfall days in September
Sanrizuka, Japan

  • Average rainfall days in September: 18.5 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is January (9 days).

Average snowfall in September
Sanrizuka, Japan

  • Average snowfall in September: 0mm

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

Average snowfall days in September
Sanrizuka, Japan

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.8 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
Sanrizuka, 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 36min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).

Average sunshine days in September
Sanrizuka, Japan

  • Average sunshine days in September: 8.4 days

The month with the most sunshine days is January (18.7 days).
The month with the least sunshine days is June (8.3 days).

Average UV index in September
Sanrizuka, Japan

  • Average UV index in September: 6

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 3).

Average cloud cover in September
Sanrizuka, Japan

  • Average cloud cover in September: 41

The month with the most cloud cover is June (Cloud cover 47).
The month with the least cloud cover is January (Cloud cover 31).

Average visibility in September
Sanrizuka, Japan

  • Average visibility in September: 10km

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