April weather forecastChatan, Japan
April
Weather in April
April, the same as March, in Chatan, Japan, is another pleasant spring month, with temperature in the range of an average low of 20.3°C (68.5°F) and an average high of 22.2°C (72°F).Temperature
Chatan observes an average high-temperature of a still pleasant 22.2°C (72°F) in April, barely different from 20.4°C (68.7°F) in March. Chatan encounters an average temperature dip to a still pleasant 20.3°C (68.5°F) throughout April, subtly lower than its daytime maximum.Humidity
In April, the average relative humidity in Chatan is 77%.Rainfall
In April, the rain falls for 16.3 days. Throughout April, 89mm (3.5") of precipitation is accumulated. Throughout the year, in Chatan, Japan, there are 215.5 rainfall days, and 1300mm (51.18") of precipitation is accumulated.Sea temperature
In Chatan, in April, the average water temperature is 22.4°C (72.3°F).Note: If someone is sensitive to cold, the enjoyment of swimming in 22.4°C (72.3°F) water hinges on factors like sunshine, wind, and the current air temperature. (For context: Olympic swimming competitions are held in water temperatures of 25°C (77°F) to 28°C (82.4°F).)
Daylight
In Chatan, the average length of the day in April is 12h and 47min.On the first day of the month, sunrise is at 06:19 and sunset at 18:45. On the last day of April, sunrise is at 05:51 and sunset at 19:00 JST.
Sunshine
In Chatan, Japan, the average sunshine in April is 6.9h.UV index
In Chatan, Japan, the average daily maximum UV index in April is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 6 in April interprets into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Chatan, Japan
- Average high temperature in April: 22.2°C
The warmest month (with the highest average high temperature) is August (29.5°C).
The month with the lowest average high temperature is January (18.8°C).
- Average low temperature in April: 20.3°C
The month with the highest average low temperature is August (28.2°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).
Average pressure in April
Chatan, Japan
- Average pressure in April: 1015.1mbar
The month with the highest atmospheric pressure is January (1020.9mbar).
The month with the lowest atmospheric pressure is August (1006.6mbar).
Average wind speed in April
Chatan, Japan
- Average wind speed in April: 22.5km/h
The windiest month (with the highest average wind speed) is December (27.6km/h).
The calmest month (with the lowest average wind speed) is May (19.5km/h).
Average humidity in April
Chatan, Japan
- Average humidity in April: 77%
The month with the highest relative humidity is June (86%).
The month with the lowest relative humidity is January (72%).
Average rainfall in April
Chatan, Japan
- Average rainfall in April: 89mm
The wettest month (with the highest rainfall) is June (198mm).
The driest months (with the least rainfall) are January and February (53mm).
Average rainfall days in April
Chatan, Japan
- Average rainfall days in April: 16.3 days
The month with the highest number of rainy days is October (19.7 days).
The month with the least rainy days is July (16.1 days).
Average sea temperature in April
Chatan, Japan
- Average sea temperature in April: 22.4°C
The best month for swimming (with the highest average sea temperature) is August (28.7°C).
The coldest month (with the lowest average sea temperature) is February (20.9°C).
Average daylight in April /
Average sunshine in April
Chatan, Japan
- Average daylight in April: 12h and 48min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in April: 6h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in April
Chatan, Japan
- Average sunshine days in April: 11.5 days
The month with the most sunshine days is July (12.6 days).
The month with the least sunshine days is September (7.1 days).
Average UV index in April
Chatan, Japan
- Average UV index in April: 6
The months with the highest UV index are June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in April
Chatan, Japan
- Average cloud cover in April: 50
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in April
Chatan, 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).





