September weather forecastKasukabe, Japan

September

Weather in September

September, the first month of the autumn in Kasukabe, is also a moderately hot month, with an average temperature varying between 20.6°C (69.1°F) and 27.2°C (81°F).

Temperature

The onset of September brings a small shift in high-temperatures, falling from a tropical 31.9°C (89.4°F) in August to a warm 27.2°C (81°F). An average low-temperature of 20.6°C (69.1°F) marks the month of September.

Heat index

For September, the heat index is calculated to be a hot 30°C (86°F). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.
Remember that heat index calculations are made for conditions in the shade with light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.

Humidity

In Kasukabe, Japan, the average relative humidity in September is 74%.

Rainfall

In Kasukabe, Japan, in September, it is raining for 17.3 days, with typically 107mm (4.21") of accumulated precipitation. In Kasukabe, during the entire year, the rain falls for 167.3 days and collects up to 870mm (34.25") of precipitation.

Snowfall

In Kasukabe, Japan, snow does not fall in April through December.

Daylight

In Kasukabe, Japan, the average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 05:12 and sunset at 18:09. On the last day of September, in Kasukabe, sunrise is at 05:35 and sunset at 17:26 JST.

Sunshine

The average sunshine in September in Kasukabe, Japan, is 7.7h.

UV index

The average daily maximum UV index in September in Kasukabe is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 6 during September translates into these guidelines:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.

Frequently asked questions

During September, Kasukabe experiences an average high-temperature of 27.2°C (81°F) and a low-temperature of 20.6°C (69.1°F). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 30°C (86°F).

The average relative humidity in September is 74%.

In Kasukabe, in September, it is raining for 17.3 days, with typically 107mm (4.21") of accumulated precipitation.

April through December are months without snowfall in Kasukabe.

The average day length in September in Kasukabe is 12h and 25min.

In September, on the first day of the month, sunrise is at 05:12 and sunset at 18:09. On the last day of the month, sunrise is at 05:35 and sunset at 17:26 JST.

In Kasukabe, the average sunshine duration in September is 7.7h.

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

Average temperature in September
Kasukabe, Japan

  • Average high temperature in September: 27.2°C

The warmest month (with the highest average high temperature) is August (31.9°C).
The month with the lowest average high temperature is January (8.4°C).

  • Average low temperature in September: 20.6°C

The month with the highest average low temperature is August (24.6°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).

Average pressure in September
Kasukabe, Japan

  • Average pressure in September: 1013.6mbar

The month with the highest atmospheric pressure is November (1018.2mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).

Average wind speed in September
Kasukabe, Japan

  • Average wind speed in September: 10.1km/h

The windiest month (with the highest average wind speed) is April (12.6km/h).
The calmest month (with the lowest average wind speed) is November (9.5km/h).

Average humidity in September
Kasukabe, Japan

  • Average humidity in September: 74%

The month with the highest relative humidity is July (76%).
The month with the lowest relative humidity is January (59%).

Average rainfall in September
Kasukabe, Japan

  • Average rainfall in September: 107mm

The wettest month (with the highest rainfall) is October (121mm).
The driest month (with the least rainfall) is December (33mm).

Average rainfall days in September
Kasukabe, Japan

  • Average rainfall days in September: 17.3 days

The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is January (7.2 days).

Average snowfall in September
Kasukabe, Japan

  • Average snowfall in September: 0mm

The month with the highest snowfall is February (30mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in September
Kasukabe, Japan

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.4 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
Kasukabe, Japan

  • Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 7h and 42min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).

Average sunshine days in September
Kasukabe, Japan

  • Average sunshine days in September: 10.4 days

The month with the most sunshine days is January (22.1 days).
The months with the least sunshine days are June and July (9.2 days).

Average UV index in September
Kasukabe, Japan

  • Average UV index in September: 6

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).

Average cloud cover in September
Kasukabe, Japan

  • Average cloud cover in September: 42

The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is January (Cloud cover 27).

Average visibility in September
Kasukabe, Japan

  • Average visibility in September: 9km

The months with the highest visibility are January, February, March, November and December (10km).
The months with the lowest visibility are April, May, June, July, August, September and October (9km).