April weather forecast
Kumamoto, Japan

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Weather in April

April in Kumamoto City observes an evident increase in thermal readings, ranging from a swell to 18.3°C (64.9°F) and a dip to 9.8°C (49.6°F), signifying the impending full bloom of spring. The city boasts comfortable balmy days and mildly nippy evenings. Respite comes with a cool sea breeze which adds to the charm of this month. Existence of longer daylight hours makes sightseeing an attractive pursuit during this month. As the city gears up for summer, the mercury readings soar in the coming month of May.

Temperature

With the onset of April, Kumamoto experiences a subtle temperature shift, with the average high-temperature moving from a refreshing 13.5°C (56.3°F) in March to an enjoyable 18.3°C (64.9°F). Kumamoto experiences a steady low-temperature of 9.8°C (49.6°F) throughout April.

Humidity

March and April, with an average relative humidity of 72%, are the least humid months in Kumamoto.

Rainfall

In April, in Kumamoto, the rain falls for 14 days. Throughout April, 62mm (2.44") of precipitation is accumulated. In Kumamoto, during the entire year, the rain falls for 179.9 days and collects up to 1028mm (40.47") of precipitation.

Snowfall

April through November are months without snowfall in Kumamoto, Japan.

Sea temperature

In Kumamoto, in April, the average water temperature is 19°C (66.2°F).
Note: When the surface water temperature is 19°C (66.2°F), most do not enjoy swimming. Breathing control becomes more complex as temperatures drop below 21°C (69.8°F).

Daylight

The average length of the day in April in Kumamoto is 12h and 59min.
On the first day of April, sunrise is at 06:04 and sunset at 18:37. On the last day of the month, sunrise is at 05:30 and sunset at 18:58 JST.

Sunshine

In Kumamoto, the average sunshine in April is 9h.

UV index

In Kumamoto, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 4 during April, leads to the following recommendations:
Exercise prevention - Warding off sunburn is urged. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
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Frequently asked questions

What is the average April temperature in Kumamoto?

An average high-temperature, in April, in Kumamoto, is 18.3°C (64.9°F) and the average low-temperature is 9.8°C (49.6°F).

What are the least humid months in Kumamoto?

The months with the lowest humidity in Kumamoto, Japan, are March and April, with an average relative humidity of 72%.

What is the average humidity in April in Kumamoto?

In April, the average relative humidity in Kumamoto, Japan, is 72%.

How many days does it rain in April in Kumamoto?

In Kumamoto, Japan, during April, the rain falls for 14 days and regularly aggregates up to 62mm (2.44") of precipitation.

When it does not snow in Kumamoto?

In Kumamoto, snow does not fall in April through November.

Does it snow in Kumamoto in April?

In April, in Kumamoto, it doesn't snow. March is the latest month when it typically snows.

How cold is the water in April in Kumamoto?

In Kumamoto, in April, the average water temperature is 19°C (66.2°F). For swimming, a surface water temperature of 19°C (66.2°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).

How many hours of daylight does Kumamoto have in April?

In April, the average day length in Kumamoto is 12h and 59min.

When are sunrise and sunset in April in Kumamoto?

On the first day of April in Kumamoto, Japan, sunrise is at 06:04 and sunset at 18:37. On the last day of the month, sunrise is at 05:30 and sunset at 18:58 JST.

How many hours of sunshine does Kumamoto have in April?

The average sunshine duration in April in Kumamoto is 9h.

What is the UV index reading in April in Kumamoto?

In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Kumamoto, Japan

Average temperature in April - Kumamoto, Japan
  • Average high temperature in April: 18.3°C

The warmest month (with the highest average high temperature) is August (30.4°C).
The month with the lowest average high temperature is January (8.3°C).

  • Average low temperature in April: 9.8°C

The month with the highest average low temperature is August (23.3°C).
The coldest month (with the lowest average low temperature) is January (1.7°C).

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Average pressure in April
Kumamoto, Japan

Average pressure in April - Kumamoto, Japan
  • Average pressure in April: 1015.2mbar

The month with the highest atmospheric pressure is January (1021.8mbar).
The month with the lowest atmospheric pressure is June (1008.2mbar).

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Average wind speed in April
Kumamoto, Japan

Average wind speed in April - Kumamoto, Japan
  • Average wind speed in April: 8.3km/h

The windiest month (with the highest average wind speed) is March (8.7km/h).
The calmest month (with the lowest average wind speed) is June (7km/h).

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Average humidity in April
Kumamoto, Japan

Average humidity in April - Kumamoto, Japan
  • Average humidity in April: 72%

The month with the highest relative humidity is July (83%).
The months with the lowest relative humidity are March and April (72%).

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Average rainfall in April
Kumamoto, Japan

Average rainfall in April - Kumamoto, Japan
  • Average rainfall in April: 62mm

The wettest month (with the highest rainfall) is June (216mm).
The driest month (with the least rainfall) is January (36mm).

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Average rainfall days in April
Kumamoto, Japan

Average rainfall days in April - Kumamoto, Japan
  • Average rainfall days in April: 14 days

The month with the highest number of rainy days is July (23.4 days).
The month with the least rainy days is January (10.5 days).

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Average snowfall in April
Kumamoto, Japan

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

The month with the highest snowfall is January (16mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in April
Kumamoto, Japan

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

The month with the highest number of snowfall days is January (3.3 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
Kumamoto, Japan

Average sea temperature in April - Kumamoto, Japan
  • Average sea temperature in April: 19°C

The best month for swimming (with the highest average sea temperature) is August (28°C).
The coldest months (with the lowest average sea temperature) are February and March (18°C).

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

Average daylight in April / Average sunshine in April - Kumamoto, 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: 9h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

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Average sunshine days in April
Kumamoto, Japan

Average sunshine days in April - Kumamoto, Japan
  • Average sunshine days in April: 14.2 days

The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is July (4.9 days).

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Average UV index in April
Kumamoto, Japan

Average UV index in April - Kumamoto, Japan
  • Average UV index in April: 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).

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Average cloud cover in April
Kumamoto, Japan

Average cloud cover in April - Kumamoto, Japan
  • Average cloud cover in April: 38

The month with the most cloud cover is June (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 31).

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Average visibility in April
Kumamoto, Japan

Average visibility in April - Kumamoto, Japan
  • Average visibility in April: 9km

The month with the highest visibility is November (10km).
The months with the lowest visibility are June and July (8km).

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Kumamoto, Japan

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