April weather forecast
Sasebo, Japan

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Weather in April

April brings along a substantial enhancement in weather conditions in Sasebo city. Residents can start to enjoy warmer days as the harshness of winter starts to fade. The temperatures continue rising and the city experiences more sunny days than the previous months. However, rain falls are not uncommon due to the moist nature of the spring season. The lengthier daylight hours make it the perfect time for outdoor activities in Sasebo.

Temperature

The shift into April is marked by a modest rise in the average high-temperature, moving from March's 13.5°C (56.3°F) to a still refreshing 17.3°C (63.1°F). Sasebo's average low-temperature in April is measured at a cool 11.9°C (53.4°F).

Humidity

In Sasebo, the average relative humidity in April is 74%.

Rainfall

In Sasebo, during April, the rain falls for 12.2 days and regularly aggregates up to 59mm (2.32") of precipitation. Throughout the year, in Sasebo, there are 169 rainfall days, and 900mm (35.43") of precipitation is accumulated.

Snowfall

In Sasebo, snow does not fall in March through November.

Sea temperature

In Sasebo, the average seawater temperature in April is 15.9°C (60.6°F).
Note: For most, swimming in 15.9°C (60.6°F) is not a pleasant experience. As the temperature falls from 21°C (69.8°F) to 15°C (59°F), controlling one's breathing becomes more difficult.

Daylight

In Sasebo, Japan, the average length of the day in April is 13h and 1min.
On the first day of April, sunrise is at 06:08 and sunset at 18:41. On the last day of the month, sunrise is at 05:33 and sunset at 19:02 JST.

Sunshine

In Sasebo, the average sunshine in April is 8.4h.

UV index

The average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high UV index of 4 in April translates into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

What is the temperature in April in Sasebo?

In April, in Sasebo, the average high-temperature is 17.3°C (63.1°F), and the average low-temperature is 11.9°C (53.4°F).

What is the average humidity in April in Sasebo?

In Sasebo, the average relative humidity in April is 74%.

How many days does it rain in April in Sasebo?

In Sasebo, Japan, in April, it is raining for 12.2 days, with typically 59mm (2.32") of accumulated precipitation.

When it does not snow in Sasebo?

March through November are months without snowfall in Sasebo, Japan.

What is the sea water temperature in April in Sasebo?

In April, the average sea temperature in Sasebo is 15.9°C (60.6°F). For swimming, a surface water temperature of 15.9°C (60.6°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

What is the average length of the day in April in Sasebo?

The average day length in April in Sasebo, Japan, is 13h and 1min.

When are sunrise and sunset in April in Sasebo?

In April, on the first day of the month, sunrise is at 06:08 and sunset at 18:41. On the last day of the month, in Sasebo, Japan, sunrise is at 05:33 and sunset at 19:02 JST.

How many hours of sunshine does Sasebo have in April?

The average sunshine duration in April in Sasebo, Japan, is 8.4h.

What is the UV index reading in April in Sasebo?

In April, the average daily maximum UV index in Sasebo is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in April
Sasebo, Japan

Average temperature in April - Sasebo, Japan
  • Average high temperature in April: 17.3°C

The warmest month (with the highest average high temperature) is August (29.6°C).
The month with the lowest average high temperature is January (9.3°C).

  • Average low temperature in April: 11.9°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 (5.4°C).

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Average pressure in April
Sasebo, Japan

Average pressure in April - Sasebo, Japan
  • Average pressure in April: 1015.3mbar

The month with the highest atmospheric pressure is January (1022.2mbar).
The month with the lowest atmospheric pressure is June (1008mbar).

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Average wind speed in April
Sasebo, Japan

Average wind speed in April - Sasebo, Japan
  • Average wind speed in April: 14.4km/h

The windiest months (with the highest average wind speed) are January and December (16.7km/h).
The calmest month (with the lowest average wind speed) is June (10.6km/h).

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Average humidity in April
Sasebo, Japan

Average humidity in April - Sasebo, Japan
  • Average humidity in April: 74%

The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is March (71%).

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Average rainfall in April
Sasebo, Japan

Average rainfall in April - Sasebo, Japan
  • Average rainfall in April: 59mm

The wettest month (with the highest rainfall) is July (192mm).
The driest month (with the least rainfall) is January (38mm).

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Average rainfall days in April
Sasebo, Japan

Average rainfall days in April - Sasebo, Japan
  • Average rainfall days in April: 12.2 days

The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is May (9.5 days).

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Average snowfall in April
Sasebo, Japan

Average snowfall in April - Sasebo, Japan
  • Average snowfall in April: 0mm

The month with the highest snowfall is January (6mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in April
Sasebo, Japan

Average snowfall days in April - Sasebo, Japan
  • Average snowfall days in April: 0 days

The month with the highest number of snowfall days is January (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in April
Sasebo, Japan

Average sea temperature in April - Sasebo, Japan
  • Average sea temperature in April: 15.9°C

The best month for swimming (with the highest average sea temperature) is August (27.7°C).
The coldest month (with the lowest average sea temperature) is March (14.7°C).

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Average daylight in April /
Average sunshine in April
Sasebo, Japan

Average daylight in April / Average sunshine in April - Sasebo, Japan
  • Average daylight in April: 13h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in April: 8h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are January and December (Average sunshine: 4h and 30min).

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Average sunshine days in April
Sasebo, Japan

Average sunshine days in April - Sasebo, Japan
  • Average sunshine days in April: 16 days

The month with the most sunshine days is May (20.2 days).
The months with the least sunshine days are July and December (9.5 days).

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Average UV index in April
Sasebo, Japan

Average UV index in April - Sasebo, Japan
  • Average UV index in April: 4

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in April
Sasebo, Japan

Average cloud cover in April - Sasebo, Japan
  • Average cloud cover in April: 39

The months with the most cloud cover are January and December (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 33).

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Average visibility in April
Sasebo, Japan

Average visibility in April - Sasebo, Japan
  • Average visibility in April: 10km

The months with the highest visibility are January, February, March, April, September, October, November and December (10km).
The months with the lowest visibility are May, June, July and August (9km).

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Sasebo, Japan

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