September weather forecast
Okazaki, Japan

September

Weather in September

September, the first month of the autumn in Okazaki, is also a moderately hot month, with an average temperature fluctuating between 26.9°C (80.4°F) and 20.1°C (68.2°F).

Temperature

September ushers in a minor alteration in Okazaki's climate, with the average high-temperature moving from August's tropical 31.1°C (88°F) to a moderately hot 26.9°C (80.4°F). September nights are marked by an average low-temperature of 20.1°C (68.2°F).

Humidity

The average relative humidity in September is 77%.

Rainfall

In Okazaki, in September, it is raining for 14.8 days, with typically 106mm (4.17") of accumulated precipitation. Throughout the year, there are 151 rainfall days, and 995mm (39.17") of precipitation is accumulated.

Snowfall

April through November are months without snowfall in Okazaki.

Daylight

In Okazaki, the average length of the day in September is 12h and 24min.
On the first day of the month, sunrise is at 05:24 and sunset at 18:18. On the last day of September, sunrise is at 05:45 and sunset at 17:37 JST.

Sunshine

The average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September in Okazaki is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 5 in September leads to these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.

Frequently asked questions

What are the temperatures in Okazaki in September?
The average high-temperature, in September, in Okazaki, is 26.9°C (80.4°F), while the average low-temperature is 20.1°C (68.2°F). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is computed to be 40°C (104°F).
What is the average humidity in September in Okazaki?
The average relative humidity in September is 77%.
How many days does it rain in September in Okazaki?
In September, in Okazaki, the rain falls for 14.8 days. Throughout September, 106mm (4.17") of precipitation is accumulated.
When it does not snow in Okazaki?
April through November are months without snowfall in Okazaki, Japan.
What is the average length of the day in September in Okazaki?
In Okazaki, Japan, the average day length in September is 12h and 24min.
When are sunrise and sunset in September in Okazaki?
In September, on the first day of the month, sunrise is at 05:24 and sunset at 18:18. On the last day of the month, sunrise is at 05:45 and sunset at 17:37 JST.
How long on average sun shines in September in Okazaki?
The average sunshine duration in September in Okazaki is 8.7h.
How high is the UV index in September in Okazaki?
The average daily maximum UV index in September in Okazaki is 5. A UV Index reading of 3 to 5 represents 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Okazaki, Japan
Average temperature in September
Okazaki, Japan
  • Average high temperature in September: 26.9°C

The warmest month (with the highest average high temperature) is August (31.1°C).
The month with the lowest average high temperature is January (7.5°C).

  • Average low temperature in September: 20.1°C

The month with the highest average low temperature is August (23.8°C).
The coldest month (with the lowest average low temperature) is January (1°C).

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

The month with the highest atmospheric pressure is November (1019mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).

Average wind speed in September - Okazaki, Japan
Average wind speed in September
Okazaki, Japan
  • Average wind speed in September: 9.3km/h

The windiest month (with the highest average wind speed) is January (13.8km/h).
The calmest month (with the lowest average wind speed) is July (8.6km/h).

Average humidity in September - Okazaki, Japan
Average humidity in September
Okazaki, Japan
  • Average humidity in September: 77%

The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is February (69%).

Average rainfall in September - Okazaki, Japan
Average rainfall in September
Okazaki, Japan
  • Average rainfall in September: 106mm

The wettest month (with the highest rainfall) is July (166mm).
The driest month (with the least rainfall) is January (24mm).

Average rainfall days in September - Okazaki, Japan
Average rainfall days in September
Okazaki, Japan
  • Average rainfall days in September: 14.8 days

The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is January (6.4 days).

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

The months with the highest snowfall are January and February (3mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

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

The months with the highest number of snowfall days are January and February (0.7 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 - Okazaki, Japan
Average daylight in September /
Average sunshine in September
Okazaki, 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 4min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

Average sunshine days in September - Okazaki, Japan
Average sunshine days in September
Okazaki, Japan
  • Average sunshine days in September: 12 days

The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is July (9.1 days).

Average UV index in September - Okazaki, Japan
Average UV index in September
Okazaki, 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 - Okazaki, Japan
Average cloud cover in September
Okazaki, Japan
  • Average cloud cover in September: 37

The month with the most cloud cover is July (Cloud cover 44).
The month with the least cloud cover is November (Cloud cover 30).

Average visibility in September - Okazaki, Japan
Average visibility in September
Okazaki, Japan
  • Average visibility in September: 9km

The months with the highest visibility are January, February and December (10km).
The month with the lowest visibility is July (8km).

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