Mount Haku Weather in April
April in Mount Haku brings moderate temperatures around 14°C (57°F) during the day, dropping to 3°C (37°F) at night, and as part of the rainy season, heavy rainfall is common.
Rainfall in Mount Haku in April
Mount Haku is in the rainy season in April, with rain on around 18 days and an average of 202 mm (8 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.
Temperature in Mount Haku in April
Daytime temperatures in Mount Haku reach 14°C (57°F) in April, dropping to 3°C (37°F) at night. The difference between afternoon and evening temperatures is usually noticeable. At 3°C (37°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Mount Haku in April
The area enjoys a moderate level of sunlight, with around 174 hours. It's a good balance between sunny and rainy days.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May and August typically offer the best weather for Mount Haku.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Mount Haku's climate page.
Mount Haku Temperature in April
Min Temperature
3°C (37°F)
Max Temperature
14°C (57°F)
Chance of Rain
60%
Precipitation
202 mm (8 in)
Rainy days
18 days
Humidity
68% *
Sunshine
174 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Mount Haku typically rise from around 14°C (57°F) at the start of April to approximately 19°C (66°F) by the end. Nights are cold, with lows typically ranging from 4°C (39°F) to 10°C (50°F).
Average temperatures in April
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in April
Historical weather for Mount Haku in April
Browse day-by-day weather records for Mount Haku spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mount Haku historical weather extremes in April
Based on weather observations in Mount Haku between 1976 and 2026, these are the recorded extremes during April.
- On April 28, 2005, temperatures climbed to 30°C (86°F), marking the warmest April day on record.
- The coldest April day was on April 1, 1998, with a maximum of 5°C (41°F).
- The lowest overnight temperature recorded in April was -2°C (28°F) (April 5, 2011).
- The wettest day in April Mount Haku was on April 29, 2021 with 68 mm (2.7 in) of precipitation.
Best Places in Japan in April
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in April →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Mount Haku in April
The weather can be unpredictable in April, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Mount Haku in April
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Mount Haku's climate page.
Temperature Rainfall Sunshine Humidity
See the full Mount Haku climate overview or explore weather in Japan.
