Weather in Yonaguni

Stay informed about the current meteorological conditions when planning your journey to Yonaguni. Below are up-to-date reports, charts, and forecasts to help you prepare for your trip and choose the best time for outings.

The climate of Yonaguni island can be described as warm subtropical, bordering on tropical. An eternal summer reigns here: even in the "coldest" months, January and February, the average air temperature holds at a comfortable mark of around +20°C, and frost never occurs. This makes the destination attractive for those seeking mild warmth at any time of the year.

There is no pronounced change of seasons with sharp temperature fluctuations here. Summer is warm, with averages around +28°C...+29°C, while winter is very mild. A distinctive feature of the local weather is the high stability of the temperature regime; however, tourists should be prepared for frequent precipitation. According to statistics, rainy days occur regularly throughout the year — from 16 to 21 days per month, making high humidity a constant companion for travellers.

Overall, Japan in this part offers a very even and predictable climate. When travelling here, one can count on the absence of extreme heat or cold. The main thing is to bring a light raincoat, as overcast weather and rain are habitual and frequent occurrences here, regardless of the month chosen for the trip.

One of the most remarkable features of the climate on Yonaguni island is the amazing stability of the temperature throughout the day. There are practically no sharp contrasts between day and night: according to meteorological data, the difference between maximum and minimum readings is minimal and usually varies within **1–2 degrees**. This ensures constant thermal comfort, allowing you to enjoy evening walks by the sea without the need to bundle up.

The change of seasons happens very smoothly, without sudden spikes. In spring, the air warms up gradually: while in March the thermometer stays at comfortable marks around 21–22°C, by May, truly summer warmth sets in with average values above **26°C**. Such a mild climatic transition is ideal for travellers, as it allows the body to adapt easily without the stress of acclimatisation.

Autumn on the island also delights with long-lasting warmth. September, in its characteristics, differs practically little from summer, and the cooling of the air in October and November happens extremely slowly. Even on the threshold of winter, in November, the average temperature confidently holds at the level of **24°C**, which allows the pleasant season to extend much longer than in most other regions of Japan.

When planning a journey to Yonaguni, it is worth considering that wet weather here is a fairly frequent and regular phenomenon throughout the year. Thanks to the warm subtropical climate, even in winter months the temperature stays above 20°C, so there is no snow here — precipitation falls exclusively in the form of rain.

Judging by statistics, a clearly pronounced dry season is not observed on the island. The number of days with precipitation is consistently high and varies from 16 to 21 per month. This means the probability of getting caught in the rain remains in practically any season. Most often, an umbrella might be needed in February, June, and November, when the highest number of rainy days is recorded.

Despite the high frequency of rains, their intensity, according to average indicators, remains moderate. The "driest" month in terms of precipitation volume is October (about 5 mm), while in September, November, and December the moisture level rises slightly. Usually, rains on the island, belonging to the country of Japan, take the character of warm downpours that refresh the air and do not become a serious obstacle to relaxation.

When packing for Yonaguni, it is worth remembering that a mild subtropical climate reigns here, so heavy winter clothing will not be useful to you. Even in the "coldest" months — January and February — the temperature holds in the region of a comfortable +20°C. The basis of your luggage should consist of light items made from natural breathable fabrics, such as cotton and linen. Since the sun is active here all year round, be sure to put a head covering, sunglasses, and cream with a high level of protection in your suitcase.

Pay special attention to protection from moisture and wind. Judging by statistics, rainy days happen here very often (up to 20 days a month), so a compact umbrella or a high-quality raincoat are items of primary necessity. For evening walks and windy days, especially in the winter period, it is recommended to take a light windbreaker or a fleece jacket. The principle of layering will help you feel comfortable during weather changes or the strengthening of the sea breeze.

To explore the island, which is famous for its nature, you will require comfortable walking shoes with non-slip soles, suitable for long strolls. Do not forget swimwear, as Japan in this region offers excellent opportunities for beach relaxation. It will also be useful to have a waterproof case for technology with you to protect gadgets from high humidity and sudden precipitation during excursions.