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| Corridor | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Singapore · Malacca legs Genting Dream & Disney Adventure home turf | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| South China Sea (HK–Vietnam) Southbound Hong Kong sailings | 0 | 0 | 0 | 0.1 | 0.1 | 0.6 | 1.1 | 1.4 | 1.3 | 1.1 | 0.6 | 0.1 |
| Taiwan · Keelung waters Keelung departures | 0 | 0 | 0 | 0 | 0.2 | 0.4 | 0.9 | 1.2 | 1.0 | 0.4 | 0.2 | 0 |
| Okinawa · SW Japan legs HK/Taiwan → Naha & Kagoshima | 0 | 0 | 0 | 0.1 | 0.5 | 0.7 | 1.4 | 2.1 | 1.9 | 1.0 | 0.2 | 0 |
Numbers = average storms per year at tropical-storm strength or above entering each corridor (JMA RSMC-Tokyo best track 1995-2024). Near zero Low Mid High
📊 Three conclusions from the data
- Singapore runs are typhoon-free year-round — two storms touched the Malacca corridor in thirty years. Nervous about weather, or travelling with kids and grandparents? Depart Singapore and the season simply stops mattering.
- July–September is peak — the Okinawa corridor averages 2.1 storms in August, so a summer sailing has a genuine chance of rerouting.
- December–May is the calm window for Hong Kong and Taiwan routes — all four corridors sit near zero.
🌀 So a typhoon actually comes — then what?
Rarely cancelled, usually rerouted. Ships generally travel faster than typhoons move, and captains detour early — the common outcomes are a skipped port, reordered calls, or an extra sea day.
What does a skipped port refund? Typically that port’s fees and any ship-booked excursions; the cruise fare itself usually isn’t refunded. Policies differ by line — read the official itinerary-change terms before booking.
The ship itself stays comfortable. Rerouting exists precisely to avoid the rough zone — what you’ll most likely experience is “Okinawa became an extra pool day”, not heavy seas.
🎯 So how should I choose?
- · Summer is your only window? → depart from Singapore, or take an Okinawa route accepting that rerouting is part of cruising
- · Flexible dates? → sail after late October: the peak has passed and fares soften too
- · Travelling with parents, want zero surprises? → December–May, all corridors calm; see cruising with parents
- · Check whether your travel insurance covers “itinerary changes” — a typhoon reroute usually doesn’t count as a “cancellation”, and the wording decides the payout
Method: data from the Japan Meteorological Agency RSMC-Tokyo best-track archive (1995-2024), tropical-storm strength and above, one count per storm entering a corridor. Corridors are approximate sea boxes around the routes, not individual sailings’ tracks. This page is a risk reference, not a forecast — follow official weather services and your cruise line before sailing.