September weather forecastAhacha, Japan

September

Weather in September

The first month of the autumn, September, is also a moderately hot month in Ahacha, Japan, with an average temperature ranging between max 28.7°C (83.7°F) and min 27.3°C (81.1°F).

Temperature

In September, the average high-temperature registers at a still moderately hot 28.7°C (83.7°F), nearly identical to August's 29.4°C (84.9°F). A mean low-temperature of 27.3°C (81.1°F) is a distinguishing feature of September in Ahacha, indicating a slight dip from daytime highs.

Heat index

September's mean heat index is calculated to be a tropical 34°C (93.2°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.

Humidity

In September, the average relative humidity in Ahacha, Japan, is 79%.

Rainfall

In September, in Ahacha, the rain falls for 20 days. Throughout September, 141mm (5.55") of precipitation is accumulated. In Ahacha, during the entire year, the rain falls for 228 days and collects up to 1405mm (55.31") of precipitation.

Daylight

In September, the average length of the day is 12h and 19min.
On the first day of September in Ahacha, sunrise is at 06:09 and sunset at 18:49. On the last day of the month, sunrise is at 06:21 and sunset at 18:16 JST.

Sunshine

In September, the average sunshine is 8.3h.

UV index

June through September, with an average maximum UV index of 7, are months with the highest UV index in Ahacha. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Resist extreme sun exposure. Guarding against solar damage is essential. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.

Frequently asked questions

The high-temperature, in September, in Ahacha, records 28.7°C (83.7°F), while the low-temperature is 27.3°C (81.1°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in September is calculated to be 34°C (93.2°F).

In September, the average relative humidity in Ahacha, Japan, is 79%.

In September, in Ahacha, the rain falls for 20 days. Throughout September, 141mm (5.55") of precipitation is accumulated.

In September, the average day length in Ahacha is 12h and 19min.

In September, on the first day of the month, sunrise is at 06:09 and sunset at 18:49. On the last day of the month, in Ahacha, sunrise is at 06:21 and sunset at 18:16 JST.

The average sunshine duration in September in Ahacha is 8.3h.

June through September, with an average maximum UV index of 7, are months with the highest UV index in Ahacha.

In Ahacha, Japan, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Ahacha, Japan

  • Average high temperature in September: 28.7°C

The warmest month (with the highest average high temperature) is August (29.4°C).
The month with the lowest average high temperature is January (19°C).

  • Average low temperature in September: 27.3°C

The month with the highest average low temperature is August (28.3°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).

Average pressure in September
Ahacha, Japan

  • Average pressure in September: 1009mbar

The month with the highest atmospheric pressure is January (1020.8mbar).
The month with the lowest atmospheric pressure is August (1006.6mbar).

Average wind speed in September
Ahacha, Japan

  • Average wind speed in September: 22.3km/h

The windiest month (with the highest average wind speed) is December (27.9km/h).
The calmest month (with the lowest average wind speed) is May (19.8km/h).

Average humidity in September
Ahacha, Japan

  • Average humidity in September: 79%

The month with the highest relative humidity is June (87%).
The month with the lowest relative humidity is January (72%).

Average rainfall in September
Ahacha, Japan

  • Average rainfall in September: 141mm

The wettest month (with the highest rainfall) is June (207mm).
The driest month (with the least rainfall) is February (58mm).

Average rainfall days in September
Ahacha, Japan

  • Average rainfall days in September: 20 days

The months with the highest number of rainy days are January and June (21.5 days).
The month with the least rainy days is April (16.4 days).

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

  • Average daylight in September: 12h and 18min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in September: 8h and 18min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in September
Ahacha, Japan

  • Average sunshine days in September: 6.9 days

The month with the most sunshine days is April (11.3 days).
The month with the least sunshine days is January (6 days).

Average UV index in September
Ahacha, Japan

  • Average UV index in September: 7

The months with the highest UV index are June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 4).

Average cloud cover in September
Ahacha, Japan

  • Average cloud cover in September: 38

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in September
Ahacha, Japan

  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).