APRIL AT JIGOKUDANI · BABIES · 5TH OF TWELVE
Two calendars change under you
The park goes to summer hours on the 1st and the express bus drops to the green season on the 7th, so the first week of April runs on last winter’s timetable and the rest does not. The first infants arrive.
10.6 °C is the 1991–2020 mean for Nagano city at 418 m. The park is at 850 m and runs two to three degrees colder, so read it as about 7.6 to 8.6 °C. 2 cm of snow falls in an average April in the city.

The April–October timetable. First infants · cherry blossom mid-month.
The ticket, in detail湯THE GUIDED DAY, YEAR-ROUND$140 (≈¥21,800)PER PERSON · TICKET INCLUDEDOne price in all twelve months. What changes is what is at the end of it.
Live dates in AprilWhat the calendar does to April
BABIESEverything on this list is published by the park or by Nagaden and changes on a date. First infants · cherry blossom mid-month.
What the monkeys are doing in April
April is the first of the births and the last of the bathing, and neither is reliable — it is the month both things are ending or beginning. Infants. Births run April to June, with the peak in May, and the pool is largely out of use by now.
Births run April–June, peak May, and April is the first of it.
The park publishes a predicted time for the monkeys coming down from the mountain and asks visitors to check before traveling and again on the day, through its live cameras and social accounts — which is the only thing that answers «will they be there today», and it is free.
A tour cannot put the blossom and the snow in one frame
Read before bookingThe cherry blossom is mid-April in the city, 400 m below the park, and by then there are two centimetres of snow in an average month. They are two different days.
THE TROOP DECIDES Park staff work to attract the monkeys during opening hours, but the monkeys may not show up at all on certain days; appearances are particularly sporadic in autumn. Seven of the 21 tours on this site include the ¥800 (≈$5.1) gate fee in the price and the rest leave it at the gate; not one of them includes a monkey.
LIVE DATES · APRIL · FROM NAGANO · TICKET INCLUDED
April, priced and dated
8:30–17:00 at the gate, up to 13 a day until 6 April, then 7, reportedly on the express bus, and first infants · cherry blossom mid-month. Everything else about the day is the same in every month, and is priced on the pages below.
OR MARCH INSTEAD · MAY INSTEAD · SPRING AS A WHOLE · ALL TWELVE COMPARED