September weather forecastHonjo, Japan

September

Weather in September

September, the first month of the autumn in Honjo, is also a moderately hot month, with an average temperature varying between 16.7°C (62.1°F) and 24.6°C (76.3°F).

Temperature

Honjo's September weather comes with a decrease in average high-temperatures, moving from a moderately hot 29.8°C (85.6°F) in August to a still warm 24.6°C (76.3°F). Honjo observes an average low-temperature of 16.7°C (62.1°F) during September.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Honjo, Japan, in September, it is raining for 18.3 days, with typically 87mm (3.43") of accumulated precipitation. Throughout the year, in Honjo, there are 187.8 rainfall days, and 896mm (35.28") of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of September, sunrise is at 05:14 and sunset at 18:11. On the last day of the month, sunrise is at 05:37 and sunset at 17:28 JST.

Sunshine

In Honjo, the average sunshine in September is 8.3h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 5 during September translates into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.

Frequently asked questions

The high-temperature, in September, in Honjo, records 24.6°C (76.3°F), while the low-temperature is 16.7°C (62.1°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in August is estimated at 36°C (96.8°F).

The average relative humidity in September is 77%.

In Honjo, Japan, during September, the rain falls for 18.3 days and regularly aggregates up to 87mm (3.43") of precipitation.

In Honjo, snow does not fall in April through October.

In Honjo, the average day length in September is 12h and 25min.

On the first day of September in Honjo, Japan, sunrise is at 05:14 and sunset at 18:11. On the last day of the month, sunrise is at 05:37 and sunset at 17:28 JST.

The average sunshine duration in September in Honjo, Japan, is 8.3h.

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health risk from 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
Honjo, Japan

  • Average high temperature in September: 24.6°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°C).

  • Average low temperature in September: 16.7°C

The month with the highest average low temperature is August (21.2°C).
The coldest month (with the lowest average low temperature) is January (-2°C).

Average pressure in September
Honjo, Japan

  • Average pressure in September: 1013.9mbar

The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).

Average wind speed in September
Honjo, Japan

  • Average wind speed in September: 6.4km/h

The windiest month (with the highest average wind speed) is January (10.2km/h).
The calmest month (with the lowest average wind speed) is July (5.7km/h).

Average humidity in September
Honjo, Japan

  • Average humidity in September: 77%

The month with the highest relative humidity is July (78%).
The month with the lowest relative humidity is January (64%).

Average rainfall in September
Honjo, Japan

  • Average rainfall in September: 87mm

The wettest month (with the highest rainfall) is July (149mm).
The driest month (with the least rainfall) is February (23mm).

Average rainfall days in September
Honjo, Japan

  • Average rainfall days in September: 18.3 days

The month with the highest number of rainy days is July (26.7 days).
The month with the least rainy days is February (8.3 days).

Average snowfall in September
Honjo, Japan

  • Average snowfall in September: 0mm

The month with the highest snowfall is February (47mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in September
Honjo, Japan

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (5.2 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
Honjo, 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 42min).

  • Average sunshine in September: 8h and 18min

The month with the most sunshine is May (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

Average sunshine days in September
Honjo, Japan

  • Average sunshine days in September: 8.6 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (2.5 days).

Average UV index in September
Honjo, 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, February and December (UV index 2).

Average cloud cover in September
Honjo, Japan

  • Average cloud cover in September: 40

The month with the most cloud cover is June (Cloud cover 45).
The months with the least cloud cover are January, November and December (Cloud cover 25).

Average visibility in September
Honjo, 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).