Itoshima

Planning your day in the city of Itoshima? Check out the latest weather data, detailed forecasts, and visual charts right here in this section.

The climate in Itoshima, Japan, can be described as temperate with four distinct seasons. The city experiences cool winters and warm, humid summers, with pleasant transitional periods in spring and autumn. Temperature fluctuations throughout the year are significant, allowing tourists to choose the most comfortable time for their visit based on their weather preferences.

Summer in Itoshima, lasting from June to August, is warm and humid, with average temperatures rising to 27.3°C in August. It is the summer months, especially July, that bring the most precipitation (up to 9 mm) and the highest number of rainy days (up to 18 in July), indicating a wetter period. Winters (December–February) are cool, with average temperatures around 6–8°C. There is less precipitation in winter, though the number of days with precipitation remains notable, averaging 10–11 days per month. Spring and autumn are pleasant transitional seasons with moderate temperatures and less rainfall compared to summer, making them attractive times to visit.

Itoshima sees a noticeable change in temperature regimes throughout the year, allowing tourists to choose the most comfortable season for their trip. The hottest month is typically August, when the average air temperature is around 27.3°C, and daytime highs can reach 29.3°C. Conversely, the coldest month is January, with an average temperature of 6.8°C and minimum nighttime temperatures dropping to an average of 4.8°C. The annual range of average temperatures thus spans from cool winter values to very warm summer weather.

The summer period in Itoshima, especially from June to August, is characterized by consistently warm weather. In June, the average temperature is 22.0°C, gradually rising toward the August peaks. Daytime temperatures in July (avg. 25.9°C, max. 27.7°C) and August (avg. 27.3°C, max. 29.3°C) create conditions for beach holidays and outdoor activities, though it's worth noting that these are also the months with the highest number of rainy days, which can make the weather feel somewhat humid. Spring months like April (avg. 14.6°C) and May (avg. 18.4°C), as well as October in the autumn (avg. 19.0°C), offer more moderate and mild temperatures, ideal for sightseeing and walks.

Winter months in Itoshima, from December to February, feature cool weather but without severe frosts. Average temperatures during this period fluctuate from 6.8°C in January to 8.1°C in December. At night, temperatures can drop to 4.8°C–6.0°C, while daytime highs usually do not exceed 10.2°C. Daily temperature fluctuations throughout the year are generally moderate: the difference between the average monthly maximum and minimum temperatures typically ranges from 3.6°C (in July) to 5.4°C (in March). This indicates an absence of sharp fluctuations between day and night temperatures, making the climate quite stable within each season.

The city of Itoshima experiences pronounced seasonality in the distribution of precipitation throughout the year. The highest amount of rain occurs during the summer months, forming a distinct wet season, while late autumn and early winter are characterized by drier weather. Overall, precipitation is distributed throughout the year, but its intensity and frequency vary significantly.

The main rainy season in Itoshima spans from June to September. July is the wettest month, with an average of 9 mm of precipitation and up to 18 rainy days. June and August are also quite rainy, with precipitation levels around 8 mm and 13–15 rainy days. In May, precipitation is 5 mm with 12 rainy days. Given the summer temperatures, rainfall during this period can be intense.

The driest months in Itoshima are November and December, when the average monthly precipitation drops to 2 mm. October and November also feature the fewest rainy days—averaging 9 days each. January, February, and March show moderate precipitation (3–4 mm) with 10–11 rainy days. Winter and autumn precipitation is generally less heavy than in summer. Snow is unlikely, as average minimum temperatures remain above freezing even in the coldest months.

When planning a trip to Itoshima, it's important to consider the weather variability throughout the year to ensure your stay is as comfortable as possible. The key principle when packing is layering. This will allow you to easily adapt to temperature changes. Regardless of the season, comfortable walking shoes will be your best companion, as Itoshima and its surroundings are perfect for exploring on foot. Also, don't forget a small backpack for day trips.

Summer months, especially from June to August, are warm and humid in Itoshima, with average temperatures ranging from 22°C to 27°C. This period sees the highest amount of precipitation, particularly in July, which records up to 18 rainy days. Therefore, be sure to bring light, breathable clothing made of natural fabrics, sunscreen, a hat, and, of course, an umbrella or raincoat. Even in September, when temperatures drop slightly, rain is still likely. A light sweater or windbreaker might come in handy for evening walks.

Winter in Itoshima, from December to February, is quite cool, with average temperatures around 6–8°C. Although precipitation is minimal during these months, there may be about 10–11 days with light rain. You'll need warm clothes: sweaters, fleece jackets, a coat (preferably wind- and waterproof), a hat, scarf, and gloves. Spring (March–May) and autumn (October–November) months are characterized by moderate temperatures that gradually rise or fall. During this time, layering is ideal: T-shirts, shirts, light sweaters, and a jacket that can be taken off or put on depending on the weather. An umbrella might also come in handy, especially in March, April, and May.