April weather forecast
Yokosuka, Japan

April

Weather in April

April in Yokosuka, Japan, is an enjoyable spring month, with an average temperature ranging between max 17°C (62.6°F) and min 12.1°C (53.8°F).

Temperature

Yokosuka's weather in April presents a minor rise in the average high-temperature, moving from a refreshing 13.3°C (55.9°F) in March to a comfortable 17°C (62.6°F). April's average low temperature in Yokosuka, Japan, is a fresh 12.1°C (53.8°F), displaying a subtle drop from its daily peak.

Humidity

In Yokosuka, the average relative humidity in April is 70%.

Rainfall

In Yokosuka, Japan, in April, during 13.6 rainfall days, 73mm (2.87") of precipitation is typically accumulated. Throughout the year, in Yokosuka, there are 150.9 rainfall days, and 867mm (34.13") of precipitation is accumulated.

Snowfall

April through December are months without snowfall in Yokosuka.

Sea temperature

In Yokosuka, the average seawater temperature in April is 17.5°C (63.5°F).
Note: Swimming in 17.5°C (63.5°F) is not an enjoyable experience for most. Breathing becomes progressively more challenging as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

In April, the average length of the day is 13h and 5min.
On the first day of April, sunrise is at 05:27 and sunset at 18:02. On the last day of the month, sunrise is at 04:50 and sunset at 18:26 JST.

Sunshine

The average sunshine in April in Yokosuka is 8.9h.

UV index

In Yokosuka, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 5 during April translates into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.

Frequently asked questions

What is the average April temperature in Yokosuka?
The average high-temperature, in April, in Yokosuka, is 17°C (62.6°F), while the average low-temperature is 12.1°C (53.8°F).
What is the average humidity in April in Yokosuka?
In Yokosuka, Japan, the average relative humidity in April is 70%.
How many days does it rain in April in Yokosuka?
In Yokosuka, Japan, in April, during 13.6 rainfall days, 73mm (2.87") of precipitation is typically accumulated.
When it does not snow in Yokosuka?
In Yokosuka, snow does not fall in April through December.
Does it snow in Yokosuka in April?
In April, it doesn't snow. March is the latest month when it typically snows.
What is the sea water temperature in April in Yokosuka?
In Yokosuka, the average seawater temperature in April is 17.5°C (63.5°F). Swimming in 17.5°C (63.5°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
How many hours of daylight does Yokosuka have in April?
The average day length in April in Yokosuka is 13h and 5min.
What time are sunrise and sunset in April in Yokosuka?
In April, on the first day of the month, sunrise is at 05:27 and sunset at 18:02. On the last day of the month, sunrise is at 04:50 and sunset at 18:26 JST.
How long on average sun shines in April in Yokosuka?
In April, the average sunshine duration in Yokosuka is 8.9h.
What is the UV index reading in April in Yokosuka?
The average daily maximum UV index in April in Yokosuka is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in April - Yokosuka, Japan
Average temperature in April
Yokosuka, Japan
  • Average high temperature in April: 17°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 April: 12.1°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 April - Yokosuka, Japan
Average pressure in April
Yokosuka, Japan
  • Average pressure in April: 1014.2mbar

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 April - Yokosuka, Japan
Average wind speed in April
Yokosuka, Japan
  • Average wind speed in April: 20.1km/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 April - Yokosuka, Japan
Average humidity in April
Yokosuka, Japan
  • Average humidity in April: 70%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is January (61%).

Average rainfall in April - Yokosuka, Japan
Average rainfall in April
Yokosuka, Japan
  • Average rainfall in April: 73mm

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 April - Yokosuka, Japan
Average rainfall days in April
Yokosuka, Japan
  • Average rainfall days in April: 13.6 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 April - Yokosuka, Japan
Average snowfall in April
Yokosuka, Japan
  • Average snowfall in April: 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 April - Yokosuka, Japan
Average snowfall days in April
Yokosuka, Japan
  • Average snowfall days in April: 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 April - Yokosuka, Japan
Average sea temperature in April
Yokosuka, Japan
  • Average sea temperature in April: 17.5°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 April / Average sunshine in April - Yokosuka, Japan
Average daylight in April /
Average sunshine in April
Yokosuka, Japan
  • Average daylight in April: 13h 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 April: 8h and 5min

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 April - Yokosuka, Japan
Average sunshine days in April
Yokosuka, Japan
  • Average sunshine days in April: 13.5 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 April - Yokosuka, Japan
Average UV index in April
Yokosuka, Japan
  • Average UV index in April: 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 April - Yokosuka, Japan
Average cloud cover in April
Yokosuka, Japan
  • Average cloud cover in April: 40

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 April - Yokosuka, Japan
Average visibility in April
Yokosuka, Japan
  • Average visibility in April: 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).

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