Weather in Kikaijima

To ensure your journey is perfect, it is important to check the weather forecast in advance. When planning to visit Kikaijima, review the temperature and precipitation data presented below — this will help you plan your trip effectively and pack your suitcase accordingly.

The climate of Kikaijima can be characterized as humid subtropical, ensuring a warm and comfortable atmosphere year-round. Winters here are exceptionally mild: even in January, the average temperature stays around +16°C, so there is no need to worry about snow or frost. Summer brings heat and high humidity, with temperatures peaking in August when the air consistently warms up to +28–29°C.

Rainfall on the island is a frequent occurrence, though its nature changes depending on the season. June stands out as the month with the highest volume of precipitation (up to 15 mm), which is linked to the start of the rainy season. However, September leads in the frequency of inclement weather: during this period, it can rain for up to 19 days a month. During the rest of the time, precipitation is also regular, and even in "dry" November, there can be up to 12 rainy days, so an umbrella or raincoat is definitely worth taking along.

Overall, the weather is distinguished by enviable stability and a lack of sharp temperature spikes. Thanks to the influence of the ocean, there is no extreme scorching heat or bitter cold, making the island an attractive destination for lovers of a mild climate. Travelers should expect high humidity and variable cloudiness, but the warm air and absence of severe cold compensate for these features at any time of the year.

The climate of Kikaijima island is distinguished by enviable mildness and stability, making it comfortable here at almost any time of the year. Winter in this corner of the country passes unnoticed: January and February, traditionally considered the coldest months, demonstrate an average temperature of around +16°C...+17°C. Even during the night, the thermometer rarely drops below +15°C, making the winter period feel more like a prolonged warm spring, ideal for walks without heavy outerwear.

Summer brings real warmth to the island, but without extreme scorching heat. The hottest month is August, with an average temperature of +28.5°C and highs reaching +29.5°C. July and September are only slightly cooler than the leader, maintaining figures in the range of +27°C...+28°C. Summer weather is characterized by high humidity, but the sea breeze helps make the high temperatures more bearable, creating pleasant conditions for a beach holiday.

A characteristic feature of the local temperature regime is the minimal amplitude of fluctuations between day and night readings. According to statistics, the difference between the minimum and maximum within a 24-hour period is often just 1–2 degrees. This means that the evenings here remain as warm as the days. Autumn cooling happens very gradually: even in October, the air warms up to a comfortable +25°C, and only by November does the average temperature decrease to +21.6°C.

The climate on Kikaijima island is characterized by high humidity and regular precipitation throughout the year. Since air temperatures do not drop to low values even in winter, snow is uncharacteristic for this region — the main form of precipitation is rain. Travelers should take into account that there is practically no completely "dry" season here, and an umbrella may be useful in any month.

The wettest period is considered to be the beginning of summer. The peak for moisture quantity occurs in June, when the highest precipitation figures and about 18 rainy days are recorded. This time often coincides with the seasonal rains characteristic of this part of Japan. The second period with frequent precipitation is September: this month sees the maximum number of rainy days in the year (up to 19), although the intensity of the rains may be lower than in June.

Relatively more stable weather settles in late autumn and winter. The "driest" month statistically is November, when the number of days with precipitation drops to 12. In the winter months and spring, rains occur regularly, roughly half the month, but they often have a short-term character, bringing about 4–5 mm of precipitation.

When planning a trip to Kikaijima island, consider the region's mild subtropical climate. In summer, when the average temperature holds around 28°C and humidity rises, the best choice will be light clothing made from natural breathable fabrics, such as cotton or linen. Do not forget reliable sun protection: a wide-brimmed hat, high-quality sunglasses, and cream with high SPF are simply essential for a comfortable rest on the beaches and walks in the open air.

In winter and the shoulder seasons, it is quite warm here, and the thermometer rarely drops below 15–16°C, so heavy jackets can be left at home. However, sea winds can be cool, so we recommend using the principle of layering: take t-shirts, a light jumper or hoodie, as well as a windproof jacket. For exploring the island, comfortable, broken-in shoes, such as sneakers, are perfect, while sandals will be useful for hot days.

Particular attention should be paid to protection from rain, as precipitation here is a frequent occurrence year-round, especially in June and September when the number of rainy days reaches its maximum. A compact folding umbrella or a light raincoat will not take up much space in your luggage but will certainly help you out during sudden inclement weather. Given the changeability of the weather, it is also useful to have a waterproof case for technology and documents.