Ishigaki in October & November 2026: Weather, Sea Temperature, What to Wear & Best Things to Do
已更新：6天前
Can you still wear a T-shirt, snorkel with sea turtles and enjoy the beach on Ishigaki in October or November? Often yes. These months can be excellent for sightseeing, with less oppressive heat than midsummer. But comfortable air temperature does not automatically mean calm seas. This independently written guide from Ishigaki-based StarlitSeas Travel compares the two months using Japan Meteorological Agency (JMA) 1991–2020 climate normals, then explains how to choose realistic activities.
The numbers below are historical long-term averages, not a forecast for a particular day in 2026. Actual marine activities and ferry operations depend on daily weather, sea conditions and operator decisions.
Original StarlitSeas photo: Yaeyama coastal sightseeing scenery, not a live weather image
October or November: which is better for your trip?
Choose October if swimming and snorkeling are your highest priorities and you prefer warmer air. Choose November if you like comfortable walks, scenic drives and less summer heat. Both can be great for Kabira Bay, Tamatorizaki lookout, sunset photography and professionally guided water activities when conditions are suitable. In November especially, the northeasterly wind can make exposed coasts rougher.
October vs. November climate at a glance
According to the JMA Ishigaki station 1991–2020 normals: October has a mean temperature of 26.0°C (78.8°F), average daytime high of 28.8°C (83.8°F), average low of 23.9°C (75.0°F), 211.2mm monthly rain and 5.8m/s mean wind. November averages 23.6°C (74.5°F), daytime highs of 26.2°C (79.2°F), lows of 21.5°C (70.7°F), 138.1mm monthly rain and 5.5m/s mean wind. North-northeast is the most common wind direction in both months.
Around the waters south of Ishigaki, historical mean sea-surface temperatures are approximately 27–28°C in October and around 26°C in November. These are broad offshore sea-surface normals, not a promise of the temperature at any specific beach or snorkeling site.
November has a lower monthly average rainfall than October, but that does not mean sunshine every day. Persistent wind and cloud may matter more for a trip than the rainfall total. Always check daily marine forecasts, currents and your guide’s safety assessment.
What is Ishigaki like in early, mid and late October?
Early October: summer feeling, with typhoon precautions
Warm weather still makes light clothes and water activities attractive. However, typhoons can occur in October; do not assume that the risk disappears after September. For ferry excursions and boat trips, check cancellation rules and keep flexibility.
Mid-October: a pleasant balance of sea time and sightseeing
Many travelers appreciate the mix of warm water and easier sightseeing temperatures. Guided turtle snorkeling, a SUP outing, Kabira Bay and a sunset at Uganzaki can make an excellent plan—if weather permits. Exposed north-facing areas may require rescheduling.
Late October: warm days, bring a light jacket at night
Shorts and T-shirts may still be fine by day, but boat rides, windy lookout points and nighttime stargazing feel cooler. Pack a light windproof layer rather than relying on daytime air temperature alone.
How does November change through the month?
Early November: beautiful for road trips and flexible marine tours
Sunny days are often pleasant for a coastal drive or a glass-bottom boat at Kabira Bay. Snorkeling is still possible when guided operators judge the sea safe. A wetsuit can make time in the water more comfortable, particularly for children and people who get cold easily.
Mid-November: plan around northeasterly winds
Conditions can be cloudy or windy despite mild temperatures. Put your preferred marine activity early in the stay, then swap days if necessary. If boats cancel, replace them with Ishigaki Limestone Cave, the local market, cultural visits or a private sightseeing tour.
Late November: breezy evenings and more reason for layers
Daytime temperatures are usually pleasant for walking, while evenings, ferry decks and the period after swimming can feel cool. Keep a jacket and a dry change of clothes ready, and avoid an itinerary that depends on every boat departure operating as scheduled.
Original StarlitSeas photo: regional coastal scenery, not a labeled specific landmark
Six excellent things to do in October and November
1. Kabira Bay: Ishigaki’s signature coastal view
Bright sunlight brings out beautiful turquoise colors, while boats depend on current conditions. Enjoy viewpoints and a permitted glass-bottom boat trip; Kabira Bay itself is not a free-swimming beach.
2. Sea turtle snorkeling with a professional guide
Guided snorkeling around the Osaki area is a strong option when weather allows. Wild turtles are not guaranteed, and the operator may change or cancel the site for safety. Wear appropriate flotation and consider a wetsuit in November; never chase or touch turtles.
Original StarlitSeas photo: underwater turtle and snorkeling scenery
3. Tamatorizaki and Hirakubozaki: scenic northern road trip
These lookout points reward visitors with wide coastal views without entering the sea. A rental car or private guide is useful for the spread-out route, but be careful on exposed edges in strong wind and check your return travel time.
4. Uganzaki Cape: sunset photography
This western cape is a classic sunset stop. The sun sets earlier in November than in summer, so do not overload your afternoon. Respect safety barriers and avoid cliff edges in windy conditions.
5. Kayaking and SUP, when wind and tide cooperate
There can be excellent beginner-friendly sessions in both months. The correct decision depends on actual wind direction, strength, swell and tide—not just the calendar. Choose guided activity and accept rescheduling if needed.
Original StarlitSeas photo: SUP paddling activity
6. Stargazing and nature at night
Ishigaki can have beautiful autumn night skies, but clear views depend on moon phase, cloud cover, season and observation direction. Do not expect a guaranteed Milky Way photo on any given night. A light jacket and respect for wildlife are essential.
Original StarlitSeas star photography; not a guarantee of clear skies on your visit
What to pack for October and November
October: breathable T-shirts, shorts, light trousers, UV-protective top, swimwear, grippy shoes, sunscreen, sunglasses, hat and compact rain gear. November: bring the same basics plus a light long-sleeve layer or windbreaker. For snorkeling, confirm whether your operator provides a wetsuit. In both months, have a towel and dry clothing for after marine activities.
Can you enjoy Ishigaki without renting a car?
Yes, especially around downtown Ishigaki, Euglena Mall, the public market and the remote-island ferry terminal. However, Kabira Bay and the northern capes are farther apart and bus services can be limited. Confirm actual timetables and last buses. Families, cruise passengers and travelers without a driving license may find a pre-booked private island guide more flexible.
Three realistic itineraries
A. October ocean-and-scenery day
Morning: guided sea turtle snorkeling if conditions permit. Lunch, then Kabira Bay and Uganzaki. Optional stargazing at night, depending on cloud and moon conditions. This is a full day, so cut a stop if transfers are long.
B. November scenic road-trip day
Start at Tamatorizaki and Hirakubozaki, have a pre-checked lunch stop, then visit Kabira Bay before returning to town. In windy or rainy weather, switch to indoor culture or food rather than forcing cliff viewpoints.
C. Relaxed two-day visit
Day one: easy downtown sightseeing and Kabira Bay. Day two: allow for a guided water activity or a private island tour. Do not schedule your only important boat experience in the last few hours before a departing flight.
Typhoons, northerly wind and canceled ferries
October can still see typhoon disruptions, and the north-northeast monsoon becomes a key consideration in November. Even at 26°C, boats may cancel because waves are too high. Some Iriomote Uehara, Hatoma and Hateruma services can be especially weather-sensitive. Check the ferry operator’s same-day announcements and build a buffer before important onward flights.
Frequently asked questions
Is October still good for snorkeling on Ishigaki?
Yes, often, if the guide confirms safe wind, waves and currents on your specific day.
Can I wear T-shirts in Ishigaki in November?
Frequently during sunny daytime hours. Bring a windproof layer for evenings, boats and bad weather.
Is 26°C seawater cold in November?
It is relatively warm, but lengthy immersion and wind after getting out can feel cold. A wetsuit may improve comfort.
Can typhoons hit Ishigaki in October?
Yes. They remain possible, so monitor reliable forecasts and retain cancellation flexibility.
Is the Milky Way guaranteed in October or November?
No. Moonlight, clouds, viewing direction and season all matter.
Can I visit Taketomi or Iriomote in November?
Yes if actual ferry and weather conditions allow. Keep an alternative plan in case of cancellation.
Continue planning your Ishigaki trip
Updated October 2026. Climate figures refer to 1991–2020 historical normals rather than current forecasts; verify transport, conditions, schedules and marine activity availability with official providers.
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