Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average sea temperature in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
The start of October comes with a small reduction in the average high-temperature, subtly receding from a warm 25.8°C (78.4°F) in September to an agreeable 21.5°C (70.7°F). Kosai logs an average low-temperature of 16.7°C (62.1°F) during the nights of October, subtly lower than its daytime highs.Humidity
The average relative humidity in October is 74%.Rainfall
In Kosai, in October, it is raining for 14.9 days, with typically 106mm (4.17") of accumulated precipitation. Throughout the year, there are 163.7 rainfall days, and 1017mm (40.04") of precipitation is accumulated.Snowfall
In Kosai, snow does not fall in March through November.Sea temperature
In Kosai, in October, the average water temperature is 23.4°C (74.1°F).Note: Considering one's resistance to cold, elements like sunshine, wind, and the prevailing temperature matter when taking a swim in 23.4°C (74.1°F) waters. (For comparison, the Olympic swimming standard is set between 25°C (77°F) and 28°C (82.4°F).)
Daylight
The average length of the day in October is 11h and 19min.On the first day of the month, sunrise is at 05:44 and sunset at 17:34. On the last day of October, sunrise is at 06:09 and sunset at 16:57 JST.
Sunshine
In Kosai, the average sunshine in October is 6.7h.UV index
In October, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 5 in October leads to these guidelines:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! Reflections from sand and water can intensify the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures?
What is the average humidity in October?
How many days does it rain in October?
When it does not snow?
What is the sea temperature in October?
What is the average length of the day in October?
When are sunrise and sunset in October?
How long on average sun shines in October?
How high is the UV index in October in Kosai?
Average temperature in October
Kosai, Japan
- Average high temperature in October: 21.5°C
The warmest month (with the highest average high temperature) is August (29.1°C).
The month with the lowest average high temperature is January (8.4°C).
- Average low temperature in October: 16.7°C
The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (3.5°C).
Average pressure in October
Kosai, Japan
- Average pressure in October: 1016.4mbar
The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in October
Kosai, Japan
- Average wind speed in October: 16.7km/h
The windiest month (with the highest average wind speed) is January (24.2km/h).
The calmest months (with the lowest average wind speed) are July and August (12.8km/h).
Average humidity in October
Kosai, Japan
- Average humidity in October: 74%
The month with the highest relative humidity is July (83%).
The months with the lowest relative humidity are January and February (67%).
Average rainfall in October
Kosai, Japan
- Average rainfall in October: 106mm
The wettest month (with the highest rainfall) is July (190mm).
The driest month (with the least rainfall) is January (27mm).
Average rainfall days in October
Kosai, Japan
- Average rainfall days in October: 14.9 days
The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in October
Kosai, Japan
- Average snowfall in October: 0mm
The month with the highest snowfall is February (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in October
Kosai, Japan
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in October
Kosai, Japan
- Average sea temperature in October: 23.4°C
The best month for swimming (with the highest average sea temperature) is August (26.8°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).
Average daylight in October /
Average sunshine in October
Kosai, 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 4min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).
Average sunshine days in October
Kosai, Japan
- Average sunshine days in October: 14.5 days
The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is July (8.7 days).
Average UV index in October
Kosai, Japan
- Average UV index in October: 5
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in October
Kosai, Japan
- Average cloud cover in October: 39
The month with the most cloud cover is June (Cloud cover 43).
The month with the least cloud cover is January (Cloud cover 28).
Average visibility in October
Kosai, Japan
- Average visibility in October: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
Kosai, Japan
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