Hello Minim Family,

It's the second week of June, the laundry on the balcony hasn't dried in five days, and the three-year-old has watched the same YouTube video four times. Welcome to tsuyu (梅雨). Below are the routines and Tokyo spots that have actually worked for the families we teach, most of them taking ten minutes or less to set up, none of them depending on a perfect weather forecast.

The short version. Tsuyu lasts roughly four weeks in Tokyo (mid-June to mid-July) and is the time of year when families ask us most often for things to do indoors. Below are three categories: kid-friendly Tokyo spots worth a wet-day visit, ten-minute home routines that don't need a screen, and a few small ways to keep music practice going when the apartment feels smaller than usual. From our 8 years teaching across 12 Tokyo international schools, these are the suggestions that actually stick.

Why tsuyu hits Tokyo families harder than parents expect

The rains themselves aren't the problem. The problem is the shape of the four weeks: warm enough that kids have energy, wet enough that the park is out, humid enough that even an air-conditioned apartment starts to feel claustrophobic by Saturday afternoon. School schedules barely change, but weekend plans evaporate. By week three of tsuyu, the screen-time creep is usually what parents tell us they're most worried about.

Tsuyu is shorter than parents fear and longer than children's patience. Plan in two-day chunks: one outing day, one home-routine day, repeat. That cadence is what keeps the month feeling like an adventure rather than a siege.

Six Tokyo indoor spots worth a wet-day visit

These are the places our students' families come back to, ranked roughly by age suitability. Please double-check hours and admission directly, tsuyu is when websites quietly change their schedules.

1. Tokyo Toy Museum (Yotsuya Sanchome, Shinjuku-ku). A former elementary school converted into a hands-on wooden-toy museum. Ages 0–10. The two-hour visit window suits younger kids who need an exit before meltdown.
2. Kid-O-Kid at Roppongi Hills (Minato-ku). The classic Tokyo rainy-day soft-play room: ball pit, climbing structures, a quieter baby zone. Ages 0–12, capped at three hours.
3. National Museum of Nature and Science (Ueno). Dinosaurs work in any weather. Pair with a 15-minute Ueno Park walk between showers and the day still feels like an outing.
4. KidZania Tokyo (Toyosu, Koto-ku). Pricey but full-day. Ages 3–15. Best for families with two kids in different age brackets, the older one can roam, the younger one stays in the supervised zones.
5. teamLab Borderless at Azabudai Hills (Minato-ku). Older kids and visiting grandparents both love it; under-3s sometimes find the dark rooms overwhelming. Book a weekday slot, weekends are queue-heavy.
6. ABC Cooking Studio Kids (Aoyama). 90-minute kids' cooking classes from age 4. The cost-per-child is high but the wriggly five-year-old comes home with something edible, which counts for a lot in week three of tsuyu.

A rule of thumb our families share with each other: pick spots within a 15-minute covered walk from a major station. Hibiya, Roppongi, Aoyama-itchome, Otemachi, and Ginza all have long underground walkways that make the difference between a fun day out and a soggy disaster.

Ten-minute home routines that don't need a screen

The other half of tsuyu survival is the home day, the day you didn't have the energy to plan an outing for. These are the small set-ups our teaching team uses with our own kids, and that families tell us have travelled well into rainy weekends.

• Tape-line obstacle course. Painters' tape on the floor in zigzags. Hop across without touching the lines. Five minutes of set-up, twenty minutes of play.
• Indoor music corner. A blanket, a small instrument, two or three picture books with songs. We'll come back to this one below.
• Kitchen-science minute. Baking soda, vinegar, a spoon, a tray. Three minutes of fizzing is, weirdly, enough.
• Story-recording game. Hand your child your phone with the voice recorder open and ask them to tell you a story about an animal. Replay it. They'll request another seven before bedtime.
• The drawing prompt. "Draw the rain falling on dad's umbrella." Specific prompts work better than "draw anything".

The point isn't to fill every hour, the point is to make a rainy day feel pleasant. A child who's bored for thirty minutes will invent something on the thirty-first.

Music in the apartment: small ways to keep practice through tsuyu

Tsuyu is the season practice habits quietly break. Schools are still on, but weekend lesson days get rescheduled, and the rhythm slips. A few things that help:

• Five-minute "concert" sessions between siblings or between a child and a parent. Not a real practice, a performance. The framing matters; kids will play three songs as a concert that they wouldn't play as practice.
• A rainy-day playlist the child picks. Three songs the child is currently working on, in any order. Total: 8 minutes. Doable in any apartment, on any rainy day.
• The ukulele in the living room. One of our piano teachers (and parent of two) puts it this way: "On a rainy Saturday, the instrument that's already on the sofa gets played. The one in the case in the closet doesn't." If your child plays a small instrument, leave it out for the four weeks of tsuyu and see what happens.

If your child has been showing interest in a small first instrument and the tsuyu boredom is making the question come up, our older piece on best starter ukulele for kids walks through what to look for in a soprano size, strings, and sound, written by the same teachers who do our group lessons.

What to ask before booking an indoor activity

A short parent-side checklist we share with new Tokyo families. Worth running through before you commit to the train ride.

1. Is there a separate quiet zone for under-3s, or is everything one big play hall?
2. Are strollers allowed inside or do you need to park them at the entrance?
3. What's the per-child time limit? (Some indoor playgrounds cap at 90 minutes.)
4. Are outside snacks allowed, or is there a "lunch break" zone?
5. Is the route from the nearest station covered? (Major in Tokyo in June.)
6. What's the policy if your child melts down 20 minutes in, can you re-enter later the same day?

A small note on rhythm

We tell families this in the first lesson of summer term: rainy days are when habits either deepen or quietly disappear. The choice isn't "perfect routine versus collapse", it's whether the family decides what gentle thing to do on the day, or whether the iPad decides for them. A ten-minute music-and-story routine after dinner is enough.

FAQ

When does tsuyu start in Tokyo in 2026?

The Japan Meteorological Agency typically declares the start of tsuyu in the Kanto region between June 8 and June 14 each year, with the season lasting four to five weeks before the early-July declaration of tsuyu-ake (end of rainy season). For 2026, watch the JMA announcements in the second week of June.

Our child's international school keeps cancelling outdoor activities. What can we ask the school to send home for indoor recess?

Most international schools in Tokyo are open to suggestions from PTAs in tsuyu. A short list that works: indoor scavenger-hunt cards, music-listening sessions with kid-friendly headphones, a "build the longest paper chain" challenge, and small-instrument try-outs. Schools generally welcome a parent who volunteers to run a 30-minute indoor activity once a week, the teachers are tired too.

We just moved to Tokyo. What one indoor thing should we do first?

The Tokyo Toy Museum is our most common first recommendation for families with kids under 8. It's small enough to feel manageable on day one, hands-on enough to absorb children quickly, and the wooden-toy aesthetic gives newly arrived parents a calm gentle introduction to one strand of Japanese childhood culture. Bring socks, shoes off at the door.

If you'd like to add music to a rainy afternoon

If your family is the kind that ends up gathering on the sofa on rainy days anyway, our Family Ukulele sessions are the small monthly group where parents play alongside kids, no experience needed, soprano ukuleles provided, and the room is always warm even when the weather isn't. If your child has been asking for their own first instrument, the Minim Ukulele Set is the soprano kit our teachers use in lessons. And if you'd like a teacher's eye on whether your child is ready for proper lessons, our Ukulele Academy runs 60-minute lessons in your home across central Tokyo.

Love, all of us at Minim.