September weather forecastHiji, Japan

September weather forecast for Hiji, Japan: September, the first month of the autumn in Hiji, is also a moderately hot month, with temperature in the range of an average low of 18.4°C (65.1°F) and an average high of 25.6°C (78.1°F). In Hiji, during September, the rain falls for 16.6 days and regularly aggregates up to 66mm (2.6") of precipitation.

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

September

Weather in September

September, the first month of the autumn in Hiji, is also a moderately hot month, with temperature in the range of an average low of 18.4°C (65.1°F) and an average high of 25.6°C (78.1°F).

Temperature

Start of September brings a slight shift in the average high-temperature, dipping a bit from August's 29.9°C (85.8°F) to a still warm 25.6°C (78.1°F). In September, Hiji's temperature tends to fall to an average low of 18.4°C (65.1°F) during the night.

Humidity

The average relative humidity in September is 83%.

Rainfall

In Hiji, during September, the rain falls for 16.6 days and regularly aggregates up to 66mm (2.6") of precipitation. In Hiji, during the entire year, the rain falls for 164.8 days and collects up to 676mm (26.61") of precipitation.

Snowfall

April through November are months without snowfall.

Sea temperature

In September, the average sea temperature is 26°C (78.8°F).
Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as ideal and highly pleasant for extended enjoyment in all water activities.

Daylight

In September, the average length of the day is 12h and 23min.
On the first day of September, sunrise is at 05:48 and sunset at 18:39. On the last day of the month, sunrise is at 06:07 and sunset at 18:00 JST.

Sunshine

In September, the average sunshine is 8.2h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 5 translates into these guidelines:
Undertake precautions - Obligation exists to protect against skin and eye damage. To protect against the Sun's most potent rays, avoid direct exposure around midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Stay aware! UV radiation is magnified when reflecting off sand and water.

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

Frequently asked questions

September temperatures vary between a high-temperature of 25.6°C (78.1°F) and a low-temperature of 18.4°C (65.1°F). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is appraised at 38°C (100.4°F).

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

In Hiji, in September, during 16.6 rainfall days, 66mm (2.6") of precipitation is typically accumulated.

In Hiji, snow does not fall in April through November.

In September, the average sea temperature is 26°C (78.8°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

In September, the average day length is 12h and 23min.

On the first day of September, sunrise is at 05:48 and sunset at 18:39. On the last day of the month, sunrise is at 06:07 and sunset at 18:00 JST.

The average sunshine duration in September is 8.2h.

In Hiji, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health risk 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

29.9°C

25.6°C

20.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.3km/h

7.1km/h

8.2km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

9.1

11.5

17.4

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Hiji, Japan

Average high temperature in September: 25.6°C

The warmest month (with the highest average high temperature) is August (29.9°C).
The month with the lowest average high temperature is January (8°C).

Average low temperature in September: 18.4°C

The month with the highest average low temperature is August (22.3°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).

Average pressure in September
Hiji, Japan

Average pressure in September: 1012.2mbar

The month with the highest atmospheric pressure is January (1021.6mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).

Average wind speed in September
Hiji, Japan

Average wind speed in September: 6.7km/h

The windiest month (with the highest average wind speed) is January (9.9km/h).
The calmest months (with the lowest average wind speed) are June and July (6.2km/h).

Average humidity in September
Hiji, Japan

Average humidity in September: 83%

The month with the highest relative humidity is July (85%).
The months with the lowest relative humidity are March, April and May (74%).

Average rainfall in September
Hiji, Japan

Average rainfall in September: 66mm

The wettest month (with the highest rainfall) is July (117mm).
The driest month (with the least rainfall) is January (24mm).

Average rainfall days in September
Hiji, Japan

Average rainfall days in September: 16.6 days

The month with the highest number of rainy days is July (22.2 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in September
Hiji, Japan

Average snowfall in September: 0mm

The month with the highest snowfall is January (26mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in September
Hiji, Japan

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average sea temperature in September
Hiji, Japan

Average sea temperature in September: 26°C

The best month for swimming (with the highest average sea temperature) is August (26.9°C).
The coldest month (with the lowest average sea temperature) is February (13.5°C).

Average daylight in September /
Average sunshine in September
Hiji, Japan

Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

Average sunshine in September: 8h and 12min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

Average sunshine days in September
Hiji, Japan

Average sunshine days in September: 11.5 days

The month with the most sunshine days is January (17.7 days).
The month with the least sunshine days is July (6.3 days).

Average UV index in September
Hiji, Japan

Average UV index in September: 5

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in September
Hiji, Japan

Average cloud cover in September: 44

The month with the most cloud cover is June (Cloud cover 52).
The months with the least cloud cover are May, August and November (Cloud cover 37).

Average visibility in September
Hiji, Japan

Average visibility in September: 8km

The months with the highest visibility are January, February, March, April, May, August, October, November and December (9km).
The month with the lowest visibility is June (7km).