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
October ushers in a slight temperature change, with average high-temperatures reducing from September's warm 25.3°C (77.5°F) to an agreeable 20.3°C (68.5°F). Niihama's nights in October experience an average temperature drop to a mild 15°C (59°F).Humidity
In October, the average relative humidity is 77%.Rainfall
In Niihama, Japan, in October, during 15.1 rainfall days, 103mm (4.06") of precipitation is typically accumulated. In Niihama, during the entire year, the rain falls for 191.4 days and collects up to 1183mm (46.57") of precipitation.Snowfall
In Niihama, snow does not fall in April through November.Sea temperature
In Niihama, in October, the average water temperature is 24.4°C (75.9°F).Note: While a person's sensitivity to cold is personal, factors like sunshine, wind, and the temperature can influence their comfort in 24.4°C (75.9°F) waters. Olympians, for perspective, swim in waters between 25°C (77°F) and 28°C (82.4°F).
Daylight
In October, the average length of the day is 11h and 20min.On the first day of the month, sunrise is at 06:01 and sunset at 17:51. On the last day of October, in Niihama, sunrise is at 06:25 and sunset at 17:15 JST.
Sunshine
In October, the average sunshine in Niihama is 6.1h.UV index
In Niihama, Japan, the average daily maximum UV index in October is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 4 in October interprets into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. When the Sun is at its strongest around midday, find shade and limit exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Notice! The Sun's UV exposure elevates with sand and water reflections.
Frequently asked questions
What is the temperature in October in Niihama?
What is the average humidity in October in Niihama?
How many days does it rain in October in Niihama?
When it does not snow in Niihama?
What is the water temperature in October in Niihama?
What is the average length of the day in October in Niihama?
When is the sunrise / sunset in October in Niihama?
How many hours of sunshine does Niihama have in October?
What is the UV index intensity in October in Niihama?
Average temperature in October
Niihama, Japan
- Average high temperature in October: 20.3°C
The warmest month (with the highest average high temperature) is August (28.6°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in October: 15°C
The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is January (2°C).
Average pressure in October
Niihama, Japan
- Average pressure in October: 1016.7mbar
The month with the highest atmospheric pressure is January (1020.7mbar).
The month with the lowest atmospheric pressure is June (1008.5mbar).
Average wind speed in October
Niihama, Japan
- Average wind speed in October: 9km/h
The windiest month (with the highest average wind speed) is January (11.4km/h).
The calmest month (with the lowest average wind speed) is June (6km/h).
Average humidity in October
Niihama, Japan
- Average humidity in October: 77%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is March (72%).
Average rainfall in October
Niihama, Japan
- Average rainfall in October: 103mm
The wettest month (with the highest rainfall) is July (187mm).
The driest month (with the least rainfall) is January (46mm).
Average rainfall days in October
Niihama, Japan
- Average rainfall days in October: 15.1 days
The month with the highest number of rainy days is July (23.9 days).
The month with the least rainy days is January (11.3 days).
Average snowfall in October
Niihama, Japan
- Average snowfall in October: 0mm
The month with the highest snowfall is February (40mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in October
Niihama, Japan
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is January (6.6 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
Niihama, Japan
- Average sea temperature in October: 24.4°C
The best month for swimming (with the highest average sea temperature) is August (27.5°C).
The coldest months (with the lowest average sea temperature) are February and March (15.8°C).
Average daylight in October /
Average sunshine in October
Niihama, 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in October
Niihama, Japan
- Average sunshine days in October: 13.5 days
The month with the most sunshine days is May (15.1 days).
The month with the least sunshine days is July (3.8 days).
Average UV index in October
Niihama, 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 and December (UV index 2).
Average cloud cover in October
Niihama, Japan
- Average cloud cover in October: 34
The month with the most cloud cover is June (Cloud cover 41).
The months with the least cloud cover are May and August (Cloud cover 31).
Average visibility in October
Niihama, Japan
- Average visibility in October: 10km
The months with the highest visibility are August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June and July (9km).
Niihama, Japan
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