Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
April
Weather in April
Temperature
As Koyasu welcomes April, the average high-temperature sees a modest rise, transitioning from a refreshing 13.3°C (55.9°F) in March to a comfortable 17°C (62.6°F). Koyasu maintains a near steady average temperature of 12.1°C (53.8°F) during the nights of April, demonstrating little drop from daytime highs.Humidity
The average relative humidity in April is 70%.Rainfall
In Koyasu, in April, it is raining for 13.6 days, with typically 73mm (2.87") of accumulated precipitation. In Koyasu, during the entire year, the rain falls for 151.7 days and collects up to 886mm (34.88") of precipitation.Snowfall
April through December are months without snowfall.Daylight
In April, the average length of the day is 13h and 5min.On the first day of the month, sunrise is at 05:29 and sunset at 18:04. On the last day of April, sunrise is at 04:52 and sunset at 18:28 JST.
Sunshine
In Koyasu, the average sunshine in April is 8.9h.UV index
In April, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 5 in April leads to these guidelines:
Be vigilant - Preventing sunburn is recommended. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April in Koyasu?
What is the average humidity in April in Koyasu?
How much does it rain in Koyasu in April?
When it does not snow in Koyasu?
Does it snow in Koyasu in April?
How many hours of daylight does Koyasu have in April?
What time are sunrise and sunset in April in Koyasu?
How long on average sun shines in April in Koyasu?
How high is the UV index in April in Koyasu?
Average temperature in April
Koyasu, 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
Koyasu, 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
Koyasu, 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
Koyasu, 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
Koyasu, Japan
- Average rainfall in April: 73mm
The wettest month (with the highest rainfall) is September (125mm).
The driest months (with the least rainfall) are February and December (39mm).
Average rainfall days in April
Koyasu, 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
Koyasu, 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
Koyasu, 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 daylight in April /
Average sunshine in April
Koyasu, 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
Koyasu, 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 September (11.2 days).
Average UV index in April
Koyasu, 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
Koyasu, 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
Koyasu, 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).
