Miyajima

Stay updated on the current weather in Miyajima. Below is the latest information, including forecasts and helpful weather charts to help you plan your trip.

The climate in Miyajima, Japan, is generally characterized as temperate with four distinct seasons. Visitors can expect significant fluctuations in temperature and precipitation throughout the year, making each season unique for travel.

Summers, particularly from June to August, are warm and humid, with average temperatures reaching 25-27°C and peaks around 30°C in August. This period also sees the highest rainfall, especially in July, which records about 11 mm and up to 20 rainy days, indicating a pronounced summer monsoon influence. Winters, from December to February, are quite cool, with average temperatures around 4-6°C and lows dropping to 1-3°C, though precipitation is minimal during this time.

Spring (March–May) and autumn (September–November) offer more mild and comfortable weather conditions. In spring, temperatures gradually rise from 9°C to 18°C, while in autumn, they decrease from a pleasant 23°C in September to 12°C in November. These transitional seasons typically enjoy moderate rainfall and plenty of sunny days, making them popular times to visit Miyajima.

Temperature patterns in Miyajima show a distinct seasonality, offering travelers a variety of weather conditions throughout the year. The annual temperature range is quite broad: from cool January nights, when the thermometer can drop to +1.5°C, to hot summer days in August with peaks around +30.0°C. The coldest month is January, with an average temperature of +4.6°C, while August is the hottest, with an average temperature of +26.9°C.

Summer in Miyajima, spanning from June to August, is characterized by warm and occasionally hot weather. In June, the average temperature is around +21.5°C (low of +18.2°C, high of +24.7°C). By July, it becomes noticeably warmer: the average temperature rises to +25.7°C, with nightly lows around +23.0°C and daily highs up to +28.5°C. August brings the peak of summer heat with average values of +26.9°C, while daytime temperatures often reach +30.0°C, and nighttime temperatures rarely drop below +23.8°C. High rainfall during this period, especially in July, can contribute to a feeling of high humidity.

The winter months—December, January, and February—bring cool weather to Miyajima. Average monthly temperatures range from +4.6°C in January to +6.1°C in December. Nighttime temperatures during this period can drop to +1.5°C (January) to +3.1°C (December), while daytime highs are typically in the range of +7.6°C to +9.1°C. The difference between day and night temperatures throughout the year averages 6-8°C, which is a moderate fluctuation; however, it is most noticeable in the spring months—for example, in April, the difference between the average maximum (+17.8°C) and the average minimum (+9.4°C) is over 8°C.

Miyajima experiences distinct seasonality in its precipitation patterns throughout the year. The summer months bring significantly more moisture, forming a pronounced rainy season, while late autumn and winter are characterized by drier weather.

The wettest period in Miyajima is summer. July stands out as the rainiest month, with the highest amount of precipitation (averaging 11 mm) and the maximum number of rainy days—about 20 days. June (8 mm of precipitation, 15 rainy days) and August (9 mm of precipitation, 17 rainy days) are also characterized by high humidity. During these months, precipitation is likely to take the form of frequent and intense rain, which is typical for the summer season in this region.

Conversely, the driest conditions occur from late autumn to mid-winter. November, December, and January are the driest months, with only about 2 mm of precipitation each and a minimal number of rainy days—approximately 8-10 days. Precipitation during this time is generally less abundant and shorter in duration. February (3 mm, 11 rainy days) and October (4 mm, 9 rainy days) also fall among the drier months of the year, offering more rain-free days for walking and sightseeing.

When planning a trip to Miyajima, it is important to choose the right wardrobe to stay comfortable in any weather. Since the weather changes significantly throughout the year, layering should be your key packing principle. Regardless of the season, comfortable walking shoes are an absolute necessity, as the island is best explored on foot. It’s also wise to always carry a light foldable windbreaker or raincoat, as precipitation is possible year-round, even if the intensity and frequency vary.

If your trip falls during the summer months (June–August), when Miyajima is warm and humid with temperatures up to +30°C and frequent rain (especially in July), opt for light, breathable clothing made from natural fabrics. T-shirts, shorts, light trousers, or skirts are ideal. Be sure to bring an umbrella or a light raincoat, as well as sunscreen, a hat, and sunglasses to protect yourself from the strong sun. In spring (March–May) and autumn (September–November), the weather is milder but still changeable. You will need both light items and something warmer for the evenings or cooler days—like a sweater, fleece, or jeans. An umbrella remains a useful accessory.

For a trip to Miyajima in winter (December–February), when average temperatures hover around +4-6°C and night temperatures can drop to +1-3°C, you should pack warm clothing. Bring a warm sweater, fleece jacket, thermal underwear, a winter coat (ideally wind and water-resistant, despite lower rainfall), a hat, gloves, and a scarf. Although winter is relatively dry here, waterproof shoes and windproof outerwear will help you stay comfortable during walks, especially by the water where it can be breezy.