Weather in Okinoerabu

Stay informed about the current weather situation in Okinoerabu. Below, you will find the latest data, charts, and detailed forecasts to assist you with your planning.

Okinoerabu welcomes travellers with a mild subtropical climate, characterised by warmth and high humidity throughout the year. There are no harsh winters here: even in the coldest months, January and February, the average temperature holds at a comfortable mark of about +17°C. Summer on the island is hot, but without extreme heat, with averages around +28°C in July and August, creating wonderful conditions for lovers of warm weather and island nature.

Although the temperature regime here is distinguished by enviable stability, tourists should take rainfall distribution into account. June stands out as the wettest month, marking the rainy season when precipitation reaches its peak. It is also worth noting September, which is often overcast and rainy (up to 20 days with precipitation), which is typical for the period of autumn atmospheric fronts in this region of Japan.

In general, the weather on the island is favourable for visiting at any time of the year, as it rarely gets cold here. However, when planning a trip, be prepared for frequent rains that regularly refresh the island even in relatively dry months. Spring (especially April and May) and late autumn (October-November) are often considered the most comfortable periods for excursions, offering a pleasant balance between warmth and a lower likelihood of prolonged downpours.

The climate on Okinoerabu Island is distinguished by remarkable mildness and stability, which is typical for the subtropical latitudes of Japan. The annual temperature range here is quite comfortable: even in the "coldest" month, January, the thermometer rarely drops below the 16–17°C mark. Winter here feels more like a warm spring, without frosts or sudden cold snaps, allowing tourists to enjoy open-air walks all year round.

The summer season brings steady warmth, but extreme heat occurs infrequently. The hottest month is traditionally August with an average temperature of about 28.5°C, while maximums rarely exceed 30 degrees. Warm weather sets in as early as May and lasts until October, when averages still remain at a comfortable 25°C. This makes the period from late spring to mid-autumn ideal for beach holidays and water activities.

An interesting feature of Okinoerabu's temperature regime is the surprisingly small amplitude of fluctuations between day and night temperatures. According to statistics, the difference between the minimum and maximum during the day often amounts to just 1–2 degrees. This means that nights here are practically as warm as the days, creating an atmosphere of constant thermal comfort and sparing travellers the need to bring a lot of diverse clothing.

Since Okinoerabu is located in a warm climate zone where the temperature rarely drops below 16°C even in winter, snow is an exceptional phenomenon here, and precipitation almost always falls in the form of rain. A sufficiently high frequency of rainy days is observed throughout the year, so a light raincoat or umbrella will be useful companions on the trip regardless of the chosen season.

The wettest month in terms of precipitation volume is June, when about 13 mm of moisture falls, and the number of rainy days reaches 18. This may correspond to the traditional rainy season in Japan known as "Tsuyu". Another peak of bad weather falls at the beginning of autumn: September leads in the frequency of precipitation — it can rain up to 20 days a month, although the intensity is usually lower than in early summer.

The relatively "dry" period, judging by the volume of falling moisture (about 4–5 mm), lasts from October to April, and also includes July and August. However, it is worth considering that even in these months, the number of days with precipitation remains impressive — from 12 to 16 days. This indicates that rains on the island are frequent, but often short-lived or drizzling, which should not significantly interfere with sightseeing.

The climate on Okinoerabu Island is mild and subtropical, so the basis of your luggage should consist of light items made from natural breathable fabrics, such as cotton or linen. In summer, when the average temperature reaches +28°C, you will need T-shirts, shorts, light dresses, and definitely a hat for protection from the strong sun. Do not forget swimwear and high-quality sunscreen, as well as comfortable footwear for long walks in picturesque places that will not cause blisters.

Precipitation falls on the island quite often throughout the year: even in the "driest" months, the number of rainy days varies from 12 to 16, and in June and September, it rains even more frequently. Therefore, tourists are strongly advised to take a compact folding umbrella or a light raincoat that will not take up much space in a backpack. It would also be a wise decision to choose footwear that dries quickly or is not afraid of moisture, for example, quality trekking sandals.

If your trip is planned for the winter period (from December to February), when the temperature stays around +17...+18°C, it is worth using the layering principle in clothing. Although there is no severe cold here, the sea breeze can bring coolness, especially in the evenings. A light windbreaker, fleece jacket, or cardigan worn over a T-shirt will ensure comfort and allow you to easily adapt to weather changes during the day.