Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
With average high temperatures of 9.8°C (49.6°F) and lows of 5.3°C (41.5°F), January is the coldest month.Humidity
The least humid month in Yokosuka is January, with an average relative humidity of 61%.Rainfall
In January, in Yokosuka, the rain falls for 6.5 days. Throughout January, 43mm (1.69") of precipitation is accumulated. In Yokosuka, during the entire year, the rain falls for 150.9 days and collects up to 867mm (34.13") of precipitation.Snowfall
Months with snowfall are January through March. January is the first month it typically snows. Throughout January, in the average 0.1 snowfall days, it receives 6mm (0.24") of snow. In Yokosuka, during the entire year, snow falls for 0.7 days and aggregates up to 17mm (0.67") of snow.Sea temperature
In Yokosuka, in January, the average water temperature is 16.9°C (62.4°F).Note: The majority of people do not enjoy swimming in 16.9°C (62.4°F). The difficulty in controlling breathing escalates as the temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
In January, the average length of the day in Yokosuka, Japan, is 10h and 5min.On the first day of January, sunrise is at 06:49 and sunset at 16:39. On the last day of the month, sunrise is at 06:41 and sunset at 17:07 JST.
Sunshine
The average sunshine in January is 6.4h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 3 during January leads to these instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the coldest time of year in Yokosuka?
What is the usual temperature for Yokosuka in January?
What is the least humid month in Yokosuka?
What is the average humidity in January in Yokosuka?
How many days does it rain in January in Yokosuka?
When does it start snowing in Yokosuka?
How cold is the water in January in Yokosuka?
How many hours of daylight does Yokosuka have in January?
When is the sunrise / sunset in January in Yokosuka?
How long on average sun shines in January in Yokosuka?
What is the month with the lowest UV index in Yokosuka?
What is the UV index reading in January in Yokosuka?
Average temperature in January
Yokosuka, Japan
- Average high temperature in January: 9.8°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 January: 5.3°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 January
Yokosuka, Japan
- Average pressure in January: 1016.1mbar
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 January
Yokosuka, Japan
- Average wind speed in January: 19km/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 January
Yokosuka, Japan
- Average humidity in January: 61%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is January (61%).
Average rainfall in January
Yokosuka, Japan
- Average rainfall in January: 43mm
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 January
Yokosuka, Japan
- Average rainfall days in January: 6.5 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 January
Yokosuka, Japan
- Average snowfall in January: 6mm
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 January
Yokosuka, Japan
- Average snowfall days in January: 0.1 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 January
Yokosuka, Japan
- Average sea temperature in January: 16.9°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 January /
Average sunshine in January
Yokosuka, Japan
- Average daylight in January: 10h and 1min
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 January: 6h and 2min
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 January
Yokosuka, Japan
- Average sunshine days in January: 23.2 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 January
Yokosuka, Japan
- Average UV index in January: 3
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 January
Yokosuka, Japan
- Average cloud cover in January: 30
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 January
Yokosuka, Japan
- Average visibility in January: 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).
Yokosuka, Japan
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