Iejima

Find out what weather awaits you in Iejima right now. In this section, we have gathered the latest meteorological reports, charts, and forecasts to help you plan the perfect trip.

Located in the subtropical zone, Iejima delights travelers with a warm and mild climate throughout the year. There is practically no real cold here: even in the "coolest" winter months, such as January and February, the average temperature remains steady at around 17-18°C. This makes the island a wonderful destination for those looking to avoid harsh frosts and enjoy a comfortable seaside atmosphere regardless of the season.

Summer on the island is truly hot, with temperatures peaking in July and August when the air warms up to 28-29°C. The transitions between seasons are smooth, without sharp temperature fluctuations. Spring and autumn offer travelers a "happy medium" with temperatures ranging from 20°C to 25°C, creating ideal conditions for walking and exploring the local nature without the sweltering heat.

A characteristic feature of the weather on Iejima is the relatively high frequency of precipitation throughout the year. Data indicates that the number of rainy days varies from 12 to 20 per month, with the wettest periods in June and September. Tourists should be prepared for variable cloudiness; however, the frequent rains here generally only refresh the air and maintain the lush greenery of this corner of Japan.

The transitional seasons deserve special attention, as they provide perhaps the most comfortable conditions for long walks and excursions in Iejima. Spring here is early and warm: already in April, the air warms up to an average of +21.4°C, and in May, the figures reach nearly summer-like +23.8°C. Autumn arrives very smoothly and almost imperceptibly—even in November, the average temperature holds steady at +22.8°C, allowing you to enjoy mild warmth when the first breath of winter is already felt in mainland Japan.

The summer period is characterized by enviable temperature stability without sharp fluctuations. The high season here lasts longer than usual: from June to September, the thermometer is constantly in the range of +26°C to +28.5°C. Notably, September’s figures (+27.6°C) are practically on par with July and August, effectively extending summer for a whole month and guaranteeing tourists consistently warm weather for a third of the year.

A unique climatic feature of the island is the phenomenally low diurnal temperature range. The difference between the daytime maximum and the nighttime minimum is negligible and often amounts to just 1–2 degrees. For travelers, this has great practical significance: you won't have to worry about warm clothes for the evening at all. The nights remain as warm as the days, allowing for comfortable dining on open terraces or walking by the sea until dawn in light summer clothing.

Precipitation on the island of Iejima occurs exclusively in the form of rain, as the air temperature remains comfortable and high throughout the year, never dropping to the values required for snow. In general, the climate is characterized by high humidity and regular rain, so travelers are recommended to carry an umbrella or raincoat regardless of the season.

The wettest period is the beginning of summer. The peak in terms of rainfall volume occurs in June (around 11 mm), when it rains an average of 18 days per month. A second pronounced rainy period is observed in September: although the rainfall volume is slightly lower, the frequency of rain reaches its annual maximum—about 20 days with precipitation.

The relatively "dry" season, judging by the amount of moisture, lasts from October to March, when the average precipitation level stays at around 4 mm. However, even in the driest months, such as April, July, and November, the number of rainy days rarely falls below 12. This indicates that rain on Iejima is a frequent occurrence, but during the winter-spring period, it is generally less intense and can be short-lived.

Iejima greets travelers with a mild climate, so heavy winter clothing is unlikely to be needed even in January. For the summer months, when the average temperature reaches 28°C, light items made of natural breathable fabrics such as cotton or linen are ideal. Since the sun can be quite intense, be sure to pack a wide-brimmed hat, sunglasses, and high-SPF sunscreen.

During the winter and shoulder seasons, when the thermometer stays at 17–20°C, the weather remains comfortable but can be changeable. The principle of layering works best here: bring T-shirts that can be complemented by a light windbreaker, cardigan, or sweatshirt for cool evenings. Comfortable walking shoes—sneakers or flat-soled sandals—are a must-have for exploring the island comfortably.

Given the rainfall statistics, rain on the island is a common occurrence at any time of year, with humidity peaking in June and September. Therefore, a compact folding umbrella or a high-quality raincoat will be among the most useful items in your luggage. If you plan to spend a lot of time outdoors, it is worth bringing waterproof shoes or a spare pair of socks to feel confident regardless of the whims of the weather.