April weather forecastAnnaka, Japan
April
Weather in April
April is a moderate spring month in Annaka, Japan, with temperature in the range of an average low of 4.2°C (39.6°F) and an average high of 14.3°C (57.7°F).Temperature
An upsurge in temperatures occurs as March gives way to April, with average highs shifting from a chilly 8.8°C (47.8°F) to a mild 14.3°C (57.7°F). During the nights in April, Annaka experiences a consistent average temperature of 4.2°C (39.6°F).Humidity
The months with the lowest humidity are March and April, with an average relative humidity of 70%.Rainfall
In April, the rain falls for 15.1 days. Throughout April, 62mm (2.44") of precipitation is accumulated. Throughout the year, there are 174.1 rainfall days, and 874mm (34.41") of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. April is the last month it regularly snows in Annaka. During 0.3 snowfall days, in April, Annaka aggregates 2mm (0.08") of snow. Throughout the year, there are 14.1 snowfall days, and 172mm (6.77") of snow is accumulated.Daylight
In Annaka, the average length of the day in April is 13h and 7min.On the first day of April, sunrise is at 05:30 and sunset at 18:06. On the last day of the month, sunrise is at 04:52 and sunset at 18:31 JST.
Sunshine
The average sunshine in April is 9.7h.UV index
In Annaka, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: During April, 4 as the daily maximum UV index converts into the following advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Annaka, Japan
- Average high temperature in April: 14.3°C
The warmest month (with the highest average high temperature) is August (28.4°C).
The month with the lowest average high temperature is January (3.4°C).
- Average low temperature in April: 4.2°C
The month with the highest average low temperature is August (19.3°C).
The coldest month (with the lowest average low temperature) is January (-4.4°C).
Average pressure in April
Annaka, Japan
- Average pressure in April: 1014.6mbar
The month with the highest atmospheric pressure is November (1018.8mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).
Average wind speed in April
Annaka, Japan
- Average wind speed in April: 8.7km/h
The windiest month (with the highest average wind speed) is January (10km/h).
The calmest month (with the lowest average wind speed) is July (5.4km/h).
Average humidity in April
Annaka, Japan
- Average humidity in April: 70%
The months with the highest relative humidity are July and September (81%).
The months with the lowest relative humidity are March and April (70%).
Average rainfall in April
Annaka, Japan
- Average rainfall in April: 62mm
The wettest month (with the highest rainfall) is July (149mm).
The driest month (with the least rainfall) is December (19mm).
Average rainfall days in April
Annaka, Japan
- Average rainfall days in April: 15.1 days
The month with the highest number of rainy days is July (24.7 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in April
Annaka, Japan
- Average snowfall in April: 2mm
The month with the highest snowfall is February (72mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in April
Annaka, Japan
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Annaka, Japan
- Average daylight in April: 13h and 6min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in April: 9h and 42min
The month with the most sunshine is May (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in April
Annaka, Japan
- Average sunshine days in April: 11.6 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (4.5 days).
Average UV index in April
Annaka, Japan
- Average UV index in April: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in April
Annaka, Japan
- Average cloud cover in April: 35
The months with the most cloud cover are June and July (Cloud cover 47).
The months with the least cloud cover are November and December (Cloud cover 27).
Average visibility in April
Annaka, Japan
- Average visibility in April: 9km
The months with the highest visibility are January and December (10km).
The months with the lowest visibility are June, July, August, September and October (8km).





