October weather forecastHayama, Japan
October
Weather in October
October, like September, is an agreeable autumn month in Hayama, Japan, with an average temperature varying between 17.9°C (64.2°F) and 21.7°C (71.1°F).Temperature
Start of October brings a slight shift in the average high-temperature, dipping a bit from September's moderately hot 26°C (78.8°F) to an agreeable 21.7°C (71.1°F). During October, Hayama's nighttime temperatures demonstrate a subtle cooling from daytime highs, stabilizing at a refreshing 17.9°C (64.2°F).Humidity
In October, the average relative humidity is 74%.Rainfall
The month with the most rainfall is October, when the rain falls for 15.5 days and typically aggregates up to 119mm (4.69") of precipitation.Snowfall
April through December are months without snowfall in Hayama.Sea temperature
In Hayama, Japan, the average seawater temperature in October is 23.3°C (73.9°F).Note: The cold tolerance of an individual, along with sunshine, wind, and the temperature of the environment, affects the enjoyment of swimming in 23.3°C (73.9°F) waters. (Olympic swimmers participate in waters ranging from 25°C (77°F) to 28°C (82.4°F).)
Daylight
In October, the average length of the day in Hayama is 11h and 18min.On the first day of October in Hayama, sunrise is at 05:36 and sunset at 17:25. On the last day of the month, sunrise is at 06:02 and sunset at 16:48 JST.
Sunshine
In October, the average sunshine in Hayama is 6.8h.UV index
In Hayama, Japan, the average daily maximum UV index in October is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In October, the average maximum UV index of 5 translates into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Warning! Sand and water reflections boost the intensity of UV exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Hayama, Japan
- Average high temperature in October: 21.7°C
The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (9.8°C).
- Average low temperature in October: 17.9°C
The month with the highest average low temperature is August (25.3°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).
Average pressure in October
Hayama, Japan
- Average pressure in October: 1016.3mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in October
Hayama, Japan
- Average wind speed in October: 18.9km/h
The windiest month (with the highest average wind speed) is March (20.8km/h).
The calmest month (with the lowest average wind speed) is June (15.9km/h).
Average humidity in October
Hayama, Japan
- Average humidity in October: 74%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is January (61%).
Average rainfall in October
Hayama, Japan
- Average rainfall in October: 119mm
The wettest month (with the highest rainfall) is October (119mm).
The driest months (with the least rainfall) are February and December (39mm).
Average rainfall days in October
Hayama, Japan
- Average rainfall days in October: 15.5 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in October
Hayama, Japan
- Average snowfall in October: 0mm
The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in October
Hayama, Japan
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in October
Hayama, Japan
- Average sea temperature in October: 23.3°C
The best month for swimming (with the highest average sea temperature) is August (26.2°C).
The coldest months (with the lowest average sea temperature) are February and March (16.2°C).
Average daylight in October /
Average sunshine in October
Hayama, Japan
- Average daylight in October: 11h and 18min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in October: 6h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in October
Hayama, Japan
- Average sunshine days in October: 12.8 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in October
Hayama, Japan
- Average UV index in October: 5
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 3).
Average cloud cover in October
Hayama, Japan
- Average cloud cover in October: 43
The months with the most cloud cover are March, June and October (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in October
Hayama, Japan
- Average visibility in October: 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).





