September weather forecast
Toyokawa, Japan

September

Weather in September

September, the first month of the autumn in Toyokawa, is still a warm month, with an average temperature ranging between min 20.3°C (68.5°F) and max 26.2°C (79.2°F).

Temperature

September is marked by a subtle drop in average high-temperatures, transitioning from a moderately hot 29.8°C (85.6°F) in August to a still warm 26.2°C (79.2°F). The low-temperature averages to a pleasant 20.3°C (68.5°F) during the nights of September.

Humidity

In Toyokawa, the average relative humidity in September is 78%.

Rainfall

In Toyokawa, Japan, in September, it is raining for 17 days, with typically 128mm (5.04") of accumulated precipitation. In Toyokawa, during the entire year, the rain falls for 161.2 days and collects up to 1215mm (47.83") of precipitation.

Snowfall

January, March through December are months without snowfall in Toyokawa.

Daylight

The average length of the day in September in Toyokawa, Japan, is 12h and 24min.
On the first day of September, sunrise is at 05:23 and sunset at 18:17. On the last day of the month, sunrise is at 05:44 and sunset at 17:36 JST.

Sunshine

The average sunshine in September in Toyokawa, Japan, is 8.8h.

UV index

In September, the average daily maximum UV index in Toyokawa is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 5 in September translates into this advice:
Take necessary precautions - Defending against sun damage is advocated. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.

Frequently asked questions

What are September temperatures in Toyokawa?
Toyokawa in September has an average high-temperature of 26.2°C (79.2°F) and an average low-temperature of 20.3°C (68.5°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 37°C (98.6°F).
What is the average humidity in September in Toyokawa?
In Toyokawa, the average relative humidity in September is 78%.
How many days does it rain in September in Toyokawa?
In Toyokawa, Japan, in September, during 17 rainfall days, 128mm (5.04") of precipitation is typically accumulated.
When it does not snow in Toyokawa?
In Toyokawa, snow does not fall in January, March through December.
What is the average length of the day in September in Toyokawa?
The average day length in September is 12h and 24min.
What time are sunrise and sunset in September in Toyokawa?
On the first day of September in Toyokawa, Japan, sunrise is at 05:23 and sunset at 18:17. On the last day of the month, sunrise is at 05:44 and sunset at 17:36 JST.
How many hours of sunshine does Toyokawa have in September?
In Toyokawa, Japan, the average sunshine duration in September is 8.8h.
What is the UV index reading in September in Toyokawa?
In Toyokawa, Japan, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Toyokawa, Japan
Average temperature in September
Toyokawa, Japan
  • Average high temperature in September: 26.2°C

The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (7.7°C).

  • Average low temperature in September: 20.3°C

The month with the highest average low temperature is August (24°C).
The coldest month (with the lowest average low temperature) is January (2°C).

Average pressure in September - Toyokawa, Japan
Average pressure in September
Toyokawa, Japan
  • Average pressure in September: 1013.1mbar

The month with the highest atmospheric pressure is November (1018.8mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).

Average wind speed in September - Toyokawa, Japan
Average wind speed in September
Toyokawa, Japan
  • Average wind speed in September: 11.5km/h

The windiest month (with the highest average wind speed) is January (18.8km/h).
The calmest month (with the lowest average wind speed) is August (10.1km/h).

Average humidity in September - Toyokawa, Japan
Average humidity in September
Toyokawa, Japan
  • Average humidity in September: 78%

The month with the highest relative humidity is July (83%).
The months with the lowest relative humidity are January and February (69%).

Average rainfall in September - Toyokawa, Japan
Average rainfall in September
Toyokawa, Japan
  • Average rainfall in September: 128mm

The wettest month (with the highest rainfall) is July (188mm).
The driest month (with the least rainfall) is January (32mm).

Average rainfall days in September - Toyokawa, Japan
Average rainfall days in September
Toyokawa, Japan
  • Average rainfall days in September: 17 days

The months with the highest number of rainy days are July and August (20.3 days).
The month with the least rainy days is January (6.3 days).

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

The month with the highest snowfall is February (1mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0mm).

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

The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

Average daylight in September / Average sunshine in September - Toyokawa, Japan
Average daylight in September /
Average sunshine in September
Toyokawa, Japan
  • Average daylight in September: 12h and 2min

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 54min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

Average sunshine days in September - Toyokawa, Japan
Average sunshine days in September
Toyokawa, Japan
  • Average sunshine days in September: 9.7 days

The month with the most sunshine days is January (24.6 days).
The month with the least sunshine days is July (9.1 days).

Average UV index in September - Toyokawa, Japan
Average UV index in September
Toyokawa, 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 - Toyokawa, Japan
Average cloud cover in September
Toyokawa, Japan
  • Average cloud cover in September: 36

The month with the most cloud cover is July (Cloud cover 43).
The month with the least cloud cover is January (Cloud cover 29).

Average visibility in September - Toyokawa, Japan
Average visibility in September
Toyokawa, 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).

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