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 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
The onset of April introduces a subtle rise in the average high-temperature, nudging from 13.6°C (56.5°F) in March to a still refreshing 16.8°C (62.2°F). An average nighttime temperature of 13.3°C (55.9°F) marks April in Isumi.Humidity
The average relative humidity in April is 71%.Rainfall
In Isumi, in April, it is raining for 16.1 days, with typically 97mm (3.82") of accumulated precipitation. In Isumi, during the entire year, the rain falls for 178.9 days and collects up to 1201mm (47.28") of precipitation.Snowfall
In Isumi, snow does not fall in March through December.Daylight
In April, the average length of the day in Isumi is 13h and 5min.On the first day of the month, sunrise is at 05:24 and sunset at 17:59. On the last day of April, sunrise is at 04:47 and sunset at 18:23 JST.
Sunshine
In Isumi, the average sunshine in April is 8.3h.UV index
The average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In April, a daily UV index of 5 turns into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Isumi?
What is the average humidity in April in Isumi?
How much does it rain in Isumi in April?
When it does not snow in Isumi?
What is the average length of the day in April in Isumi?
When is the sunrise / sunset in April in Isumi?
How many hours of sunshine does Isumi have in April?
How high is the UV index in April in Isumi?
Average temperature in April
Isumi, Japan
- Average high temperature in April: 16.8°C
The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (10.6°C).
- Average low temperature in April: 13.3°C
The month with the highest average low temperature is August (25.6°C).
The coldest month (with the lowest average low temperature) is January (7°C).
Average pressure in April
Isumi, Japan
- Average pressure in April: 1014.1mbar
The month with the highest atmospheric pressure is November (1017.6mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in April
Isumi, Japan
- Average wind speed in April: 23.9km/h
The windiest month (with the highest average wind speed) is March (25.5km/h).
The calmest month (with the lowest average wind speed) is June (18.7km/h).
Average humidity in April
Isumi, Japan
- Average humidity in April: 71%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is January (63%).
Average rainfall in April
Isumi, Japan
- Average rainfall in April: 97mm
The wettest month (with the highest rainfall) is October (164mm).
The driest month (with the least rainfall) is January (58mm).
Average rainfall days in April
Isumi, Japan
- Average rainfall days in April: 16.1 days
The month with the highest number of rainy days is October (18.5 days).
The month with the least rainy days is January (9.6 days).
Average snowfall days in April
Isumi, Japan
- Average snowfall days in April: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in April /
Average sunshine in April
Isumi, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in April
Isumi, Japan
- Average sunshine days in April: 12.1 days
The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is October (10.2 days).
Average UV index in April
Isumi, Japan
- Average UV index in April: 5
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January and February (UV index 3).
Average cloud cover in April
Isumi, Japan
- Average cloud cover in April: 44
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in April
Isumi, 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).
