September weather forecastOkazaki, 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.

Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

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).

The average relative humidity in September is 77%.

In September, in Okazaki, the rain falls for 14.8 days. Throughout September, 106mm (4.17") of precipitation is accumulated.

April through November are months without snowfall in Okazaki, Japan.

In Okazaki, Japan, the average day length in September is 12h and 24min.

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.

The average sunshine duration in September in Okazaki is 8.7h.

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.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

31.1°C

26.9°C

21.5°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.9km/h

9.8km/h

11.4km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

10.3

15.5

Average UV index

Average cloud cover

Average visibility

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: 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: 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: 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: 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: 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: 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: 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: 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 54min).

Average sunshine in September: 8h and 42min

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).