September weather forecastMiyoshi, Japan

September

Weather in September

September, the first month of the autumn in Miyoshi, is still a warm month, with temperature in the range of an average low of 17°C (62.6°F) and an average high of 25.1°C (77.2°F).

Temperature

The beginning of September brings a slight decrease in the average high-temperature, transitioning from a warm 29.8°C (85.6°F) in August to a still moderately hot 25.1°C (77.2°F). Nighttime temperature lowers to an average of 17°C (62.6°F) in September.

Humidity

In September, the average relative humidity is 83%.

Rainfall

In Miyoshi, in September, during 16.1 rainfall days, 114mm (4.49") of precipitation is typically accumulated. Throughout the year, there are 183.2 rainfall days, and 1092mm (42.99") of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 24min.
On the first day of September, sunrise is at 05:41 and sunset at 18:35. On the last day of the month, sunrise is at 06:02 and sunset at 17:54 JST.

Sunshine

The average sunshine in September is 8.1h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. When the Sun is at its strongest around midday, find shade and limit exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays.

Updated: Jun 6, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

An average high-temperature, in September, in Miyoshi, is 25.1°C (77.2°F) and the average low-temperature is 17°C (62.6°F). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is estimated at 38°C (100.4°F).

In Miyoshi, the average relative humidity in September is 83%.

In Miyoshi, in September, it is raining for 16.1 days, with typically 114mm (4.49") of accumulated precipitation.

April through October are months without snowfall.

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

On the first day of September in Miyoshi, Japan, sunrise is at 05:41 and sunset at 18:35. On the last day of the month, sunrise is at 06:02 and sunset at 17:54 JST.

The average sunshine duration in September is 8.1h.

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes 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

29.8°C

25.1°C

19.6°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.8km/h

7.5km/h

8.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

11.2

11.7

14.6

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Miyoshi, Japan

Average high temperature in September: 25.1°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 (5.1°C).

Average low temperature in September: 17°C

The month with the highest average low temperature is August (20.8°C).
The coldest month (with the lowest average low temperature) is January (-0.1°C).

Average pressure in September
Miyoshi, Japan

Average pressure in September: 1012.7mbar

The month with the highest atmospheric pressure is January (1020.9mbar).
The months with the lowest atmospheric pressure are June and July (1008.3mbar).

Average wind speed in September
Miyoshi, Japan

Average wind speed in September: 7km/h

The windiest month (with the highest average wind speed) is December (10.6km/h).
The calmest month (with the lowest average wind speed) is June (6.3km/h).

Average humidity in September
Miyoshi, Japan

Average humidity in September: 83%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is May (73%).

Average rainfall in September
Miyoshi, Japan

Average rainfall in September: 114mm

The wettest month (with the highest rainfall) is July (202mm).
The driest month (with the least rainfall) is November (42mm).

Average rainfall days in September
Miyoshi, Japan

Average rainfall days in September: 16.1 days

The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is May (11.6 days).

Average snowfall in September
Miyoshi, Japan

Average snowfall in September: 0mm

The month with the highest snowfall is January (145mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in September
Miyoshi, Japan

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Miyoshi, 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 6min

The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).