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 sea temperature 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
Weather in April
Temperature
In Otaru, stepping into April brings a temperature increase, moving up from March's wintry 0.7°C (33.3°F) to a chilly 7°C (44.6°F). Throughout April, Otaru encounters an average temperature drop to a wintry 1°C (33.8°F).Humidity
The months with the lowest humidity are April and October, with an average relative humidity of 79%.Rainfall
The month with the least rainfall is April, when the rain falls for 12.7 days and typically collects 43mm (1.69") of precipitation.Snowfall
January through May, October through December are months with snowfall. In Otaru, during April, snow falls for 4.6 days and regularly aggregates up to 47mm (1.85") of snow. Throughout the year, there are 103.4 snowfall days, and 1437mm (56.57") of snow is accumulated.Sea temperature
In April, the average sea temperature is 7.2°C (45°F).Note: If planning to swim in 7.2°C (45°F) under 10°C (50°F), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 13°C (55.4°F) is not much warmer.
Daylight
In April, the average length of the day is 13h and 25min.On the first day of the month, sunrise is at 05:17 and sunset at 18:02. On the last day of April, in Otaru, sunrise is at 04:30 and sunset at 18:36 JST.
Sunshine
In Otaru, the average sunshine in April is 8h.UV index
In Otaru, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 3 in April interprets into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold does it get in Otaru in April?
What are the least humid months in Otaru?
What is the average humidity in April in Otaru?
What is the driest month in Otaru?
How much does it rain in Otaru in April?
How many days does it snow in April in Otaru?
What is the water temperature in April in Otaru?
What is the average length of the day in April in Otaru?
When is the sunrise / sunset in April in Otaru?
How many hours of sunshine does Otaru have in April?
How high is the UV index in April in Otaru?
Average temperature in April
Otaru, Japan
- Average high temperature in April: 7°C
The warmest month (with the highest average high temperature) is August (23°C).
The month with the lowest average high temperature is January (-3.3°C).
- Average low temperature in April: 1°C
The month with the highest average low temperature is August (16.8°C).
The coldest month (with the lowest average low temperature) is February (-8.2°C).
Average pressure in April
Otaru, Japan
- Average pressure in April: 1012.2mbar
The month with the highest atmospheric pressure is November (1016.1mbar).
The month with the lowest atmospheric pressure is July (1008.5mbar).
Average wind speed in April
Otaru, Japan
- Average wind speed in April: 14.9km/h
The windiest month (with the highest average wind speed) is December (19km/h).
The calmest month (with the lowest average wind speed) is July (9.2km/h).
Average humidity in April
Otaru, Japan
- Average humidity in April: 79%
The month with the highest relative humidity is July (88%).
The months with the lowest relative humidity are April and October (79%).
Average rainfall in April
Otaru, Japan
- Average rainfall in April: 43mm
The wettest month (with the highest rainfall) is August (119mm).
The driest month (with the least rainfall) is April (43mm).
Average rainfall days in April
Otaru, Japan
- Average rainfall days in April: 12.7 days
The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in April
Otaru, Japan
- Average snowfall in April: 47mm
The month with the highest snowfall is January (369mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in April
Otaru, Japan
- Average snowfall days in April: 4.6 days
The month with the highest number of snowfall days is January (26 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in April
Otaru, Japan
- Average sea temperature in April: 7.2°C
The best month for swimming (with the highest average sea temperature) is August (21.6°C).
The coldest months (with the lowest average sea temperature) are February and March (5.3°C).
Average daylight in April /
Average sunshine in April
Otaru, Japan
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in April: 8h and 0min
The months with the most sunshine are May and August (Average sunshine: 8h and 24min).
The month with the least sunshine is January (Average sunshine: 1h and 12min).
Average sunshine days in April
Otaru, Japan
- Average sunshine days in April: 12.7 days
The month with the most sunshine days is May (14.8 days).
The month with the least sunshine days is January (3.1 days).
Average UV index in April
Otaru, Japan
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in April
Otaru, Japan
- Average cloud cover in April: 48
The month with the most cloud cover is January (Cloud cover 89).
The month with the least cloud cover is September (Cloud cover 42).
Average visibility in April
Otaru, Japan
- Average visibility in April: 9km
The month with the highest visibility is October (10km).
The month with the lowest visibility is January (7km).
Otaru, Japan
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