Nagano Weather in April
April in Nagano brings moderate temperatures around 14°C (57°F) during the day, dropping to 3°C (37°F) at night, with quite a bit of rainfall expected, averaging around 134 mm (5.3 in) for the month.
Rainfall in Nagano in April
You can typically expect 17 days of rain this month, averaging around 134 mm (5.3 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Nagano in April
Daytime highs in Nagano in April reach 14°C (57°F), with nights around 3°C (37°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With lows around 3°C (37°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Nagano in April
Expect sunny days throughout the month, with an estimated 198 hours of sunshine. Despite the cool temperatures, the sunny skies make it a pleasant time to visit Nagano.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May typically offers the best weather for Nagano.
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 Nagano's climate page.
Nagano Temperature in April
Min Temperature
3°C (37°F)
Max Temperature
14°C (57°F)
Chance of Rain
55%
Precipitation
134 mm (5.3 in)
Rainy days
17 days
Humidity
61%
Sunshine
198 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Nagano typically rise from around 14°C (57°F) at the start of April to approximately 20°C (68°F) by the end. Nights are cold, with lows typically ranging from 2°C (36°F) to 8°C (46°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 Nagano in April
Browse day-by-day weather records for Nagano spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Nagano historical weather extremes in April
According to our 50 years of weather records for Nagano, the following extremes were recorded between 1976 and 2026.
- On April 26, 1983, temperatures climbed to 30°C (86°F), marking the warmest April day on record.
- On April 12, 1996, Nagano saw its coldest April day with temperatures maxing out at 3°C (37°F).
- Nighttime temperatures dropped to -4°C (25°F) on April 1, 1978, marking the coldest April night on record.
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 →
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What to Wear in Nagano in April
Pack for changing conditions in Nagano in April. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Nagano 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 Nagano's climate page.
Temperature Rainfall Sunshine Humidity
See the full Nagano climate overview or explore weather in Japan.
