[January in Ishigaki] Is it Cold? Weather, Clothes & Manta Rays | 2026 Local Guide

"It's a tropical island, so I can swim even in January, right?" "Short sleeves and shorts are fine, aren't they?"
If you are packing with that thought, please stop for a moment.

January in **Ishigaki Island, Okinawa, Japan** is not the "everlasting summer paradise" found in guidebooks. The reality is that the north wind blows hard, and there are many days with gloomy cloudy skies. However, if you know "certain conditions", it is a smart season where you can monopolize the magnificent view that can only be seen at this time while keeping travel expenses low.

In this article, I, a local guide, will tell you the real weather, clothes, and how to spend your time in Ishigaki Island in January without hiding anything.

1. Conclusion: Don't Expect Sun, Go for "Cheapness" & "One Luxury"

Let me be blunt. Expecting "sunny days for the entire schedule" on a trip to Ishigaki Island in January is like winning the lottery.

As of 2026, the climate trend has not changed, and the sunny rate in January is about 30-40%. Even with a one-week stay, the reality is that you are lucky if it is clear for 1-2 days.

However, there is no need to be pessimistic. This period is the season when travel expenses and rental car fees are the cheapest in the year. Spending the saved money on "luxury hotels" and "winter-only rare experiences" is the most satisfying way to spend your time.

This is the optimal solution to conquer Ishigaki Island in January.

2. Local Realities and "Traps to Avoid"

Guidebooks often say "comfortable climate", but the local situation is a little different. Here, I will expose "pitfalls" that you won't understand unless you live locally.

1. Cruel Reality of "Marine Activities"

Diving and snorkeling sites say "held all year round", but honestly, January is cold, cloudy, and dark with rain.
The water temperature is around 22°C (72°F), but the problem is after getting out. When blown by the north wind, the sensible temperature drops to single digits at once. Unless you have a strong will to "enter the sea no matter what!", it could be a shivering tour.

However, there is only one exception.
That is **"Surface Manta Ray Snorkeling"**.
Normally, manta rays are in deep water, but in winter (around December to March), they come up to near the surface in search of plankton. Even without a diving license, being able to see manta rays at a distance that seems reachable by snorkeling is a privilege only at this time. This alone is worth going even if you endure the cold.

2. Mangrove Tour: "Kayak" over "SUP"

Be careful if you want to "take Instagrammable photos with SUP in the mangrove". The seasonal wind (north wind) is very strong in January.
Especially in the case of operators using "inflatable boards" inflated with air, they are blown by the wind and become uncontrollable, and it is not a situation to enjoy the scenery. They will do their best with the point, but unlike summer where it is "where is the best", winter becomes a choice of "where is the most decent".

• SUP: Directly affected by the wind. Beginners are desperate just to stand.
• Kayak: Less affected by wind because it is close to the water surface, and stable.

Local operators use a mix of hard boards and inflatables, and it is difficult to distinguish when booking. Take my advice, stick to kayaks in January.

3. Don't Expect "Tropical Fruits"

Those who are enthusiastic about "eating a heap of mangoes and pineapples at the roadside station!", unfortunately, January is the off-season for vegetables and fruits, and there is almost nothing.
Even if you go to the islanders' kitchen "Yuratik Market", there are only vegetables from other prefectures such as cabbage and tomatoes here and there. If you are looking for fruits, please come in summer.

3. Specific Steps and Equipment for a Comfortable Trip

A specific preparation list to prevent Ishigaki Island in January from becoming "training".

Clothing: Basically "Tokyo's Autumn" + "Windproof"

If it is a "sunny day", you can spend it in short sleeves and shorts, but such days are rare. Basically, it is cloudy or rainy, and winds of nearly 10m/s blow.

• Outerwear: Windbreaker or mountain parka (essential). Material that does not pass wind is important. Wool coats and down jackets are too hot and unsuitable because they get wet in the rain.
• Tops: Long-sleeved T-shirts, thin sweatshirts.
• Bottoms: Long pants.
• Feet: Sneakers recommended. Sandals are just a bonus for sunny days.

Avoid the "Traffic Jam Trap" of Hatsumode

If you straddle the New Year holidays, Hatsumode (first shrine visit) will be one of the following two choices, but there are notes.

• Fusaki Kannon-do: The strongest power spot favored by islanders, but the street parking around it is terrible and very crowded. If you are not confident in driving, it is safer to shift the time or use a taxi.
• Torin-ji Temple: Located in the city center, it is a tasteful temple. This is also crowded, but if you stay in the city center, walking is the correct answer. You can avoid wasting time looking for a parking lot.

4. "One Rank Up Way to Enjoy" Knowing This Info

You who read this far and thought "It seems tough...".
That is why hotel selection determines 100% of the quality of the trip.

Even if it is rainy and windy outside, if the inside of the hotel is fulfilling, it will be the "best holiday". Conversely, if you choose a business hotel just for sleeping, you will have no place to escape in bad weather, and it could be a miserable time just waiting for the rain to stop in a small room.

Why not use the saved travel expenses in January to choose a hotel with "all-inclusive" or "large public bath / indoor pool"?

For example, at Fusaki Beach Resort or ANA InterContinental, activities and spas that can be enjoyed even in the rain are substantial in the vast grounds.
"The weather was bad, but the hotel was the best, so it turned out all right!"
Please stick to the accommodation so that you can think so on the return flight.

Hotel Comparison

[2026 Latest] Which is Best for Families in Ishigaki? ANA vs Fusaki: Best Family Service & "Tragedy" of Wrong Choice

Thorough comparison by a resident dad on recommendations by age, usability of pools, and peace of mind in rooms. The definitive edition of hotel selection without regret.

5. Summary: Quick Checklist

Please screenshot this so you don't panic after arriving at the site.

January in Ishigaki Island is a season where the harshness and beauty of nature coexist as they are. If preparations are perfect, you can spend a quiet and dense island time that is not found in summer crowded with tourists. Have a good trip!