October weather forecast
Koyasan, Japan

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Weather in October

October, the same as September, in Koyasan, Japan, is another pleasant autumn month, with temperature in the range of an average low of 13°C (55.4°F) and an average high of 20.5°C (68.9°F).

Temperature

October implies a gentle temperature shift, with average high-temperatures reducing from September's warm 26°C (78.8°F) to a pleasant 20.5°C (68.9°F). Koyasan, in October, experiences an average temperature of 13°C (55.4°F) at night.

Humidity

In Koyasan, the average relative humidity in October is 81%.

Rainfall

In October, in Koyasan, the rain falls for 16.4 days. Throughout October, 146mm (5.75") of precipitation is accumulated. Throughout the year, in Koyasan, Japan, there are 199.5 rainfall days, and 1277mm (50.28") of precipitation is accumulated.

Snowfall

In Koyasan, snow does not fall in May through November.

Daylight

The average length of the day in October in Koyasan is 11h and 20min.
On the first day of October in Koyasan, sunrise is at 05:52 and sunset at 17:42. On the last day of the month, sunrise is at 06:16 and sunset at 17:05 JST.

Sunshine

In Koyasan, the average sunshine in October is 6.4h.

UV index

In Koyasan, the average daily maximum UV index in October is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 4 during October leads to these instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What is the average October temperature in Koyasan?

The high-temperature, in October, in Koyasan, is 20.5°C (68.9°F), while the low-temperature averages to 13°C (55.4°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is computed to be 37°C (98.6°F).

What is the average humidity in October in Koyasan?

In Koyasan, the average relative humidity in October is 81%.

How many days does it rain in October in Koyasan?

In October, the rain falls for 16.4 days. Throughout October, 146mm (5.75") of precipitation is accumulated.

When it does not snow in Koyasan?

In Koyasan, Japan, snow does not fall in May through November.

What is the average length of the day in October in Koyasan?

In Koyasan, Japan, the average day length in October is 11h and 20min.

What time are sunrise and sunset in October in Koyasan?

In October, on the first day of the month, sunrise is at 05:52 and sunset at 17:42. On the last day of the month, in Koyasan, Japan, sunrise is at 06:16 and sunset at 17:05 JST.

How many hours of sunshine does Koyasan have in October?

In Koyasan, Japan, the average sunshine duration in October is 6.4h.

What is the UV index reading in October in Koyasan?

The average daily maximum UV index in October in Koyasan is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Koyasan, Japan

Average temperature in October - Koyasan, Japan
  • Average high temperature in October: 20.5°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 (6.7°C).

  • Average low temperature in October: 13°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 (0.1°C).

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Average pressure in October
Koyasan, Japan

Average pressure in October - Koyasan, Japan
  • Average pressure in October: 1016.5mbar

The month with the highest atmospheric pressure is February (1019.5mbar).
The month with the lowest atmospheric pressure is June (1008.8mbar).

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Average wind speed in October
Koyasan, Japan

Average wind speed in October - Koyasan, Japan
  • Average wind speed in October: 7.1km/h

The windiest month (with the highest average wind speed) is January (9.5km/h).
The calmest months (with the lowest average wind speed) are June and August (6.2km/h).

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Average humidity in October
Koyasan, Japan

Average humidity in October - Koyasan, Japan
  • Average humidity in October: 81%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is May (74%).

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Average rainfall in October
Koyasan, Japan

Average rainfall in October - Koyasan, Japan
  • Average rainfall in October: 146mm

The wettest month (with the highest rainfall) is July (179mm).
The driest month (with the least rainfall) is January (56mm).

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Average rainfall days in October
Koyasan, Japan

Average rainfall days in October - Koyasan, Japan
  • Average rainfall days in October: 16.4 days

The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is February (13.8 days).

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Average snowfall in October
Koyasan, Japan

Average snowfall in October - Koyasan, Japan
  • Average snowfall in October: 0mm

The month with the highest snowfall is January (90mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).

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Average snowfall days in October
Koyasan, Japan

Average snowfall days in October - Koyasan, Japan
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).

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Average daylight in October /
Average sunshine in October
Koyasan, Japan

Average daylight in October / Average sunshine in October - Koyasan, Japan
  • Average daylight in October: 11h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in October: 6h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).

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Average sunshine days in October
Koyasan, Japan

Average sunshine days in October - Koyasan, Japan
  • Average sunshine days in October: 11.1 days

The month with the most sunshine days is May (14.3 days).
The month with the least sunshine days is July (7.9 days).

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Average UV index in October
Koyasan, Japan

Average UV index in October - Koyasan, Japan
  • Average UV index in October: 4

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in October
Koyasan, Japan

Average cloud cover in October - Koyasan, Japan
  • Average cloud cover in October: 39

The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in October
Koyasan, Japan

Average visibility in October - Koyasan, Japan
  • Average visibility in October: 9km

The months with the highest visibility are January, February, March, April, May, August, September, October, November and December (9km).
The months with the lowest visibility are June and July (8km).

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Koyasan, Japan

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