Anan

Planning your day in Anan? Check out the latest weather information, forecasts, and helpful charts below to ensure your trip is as comfortable as possible.

The climate in Anan can be described as humid subtropical, with four distinct seasons. The weather here features significant temperature fluctuations throughout the year, offering visitors diverse conditions depending on when they travel. Generally, you can expect hot and humid summers and cool, relatively dry winters.

The most notable feature of the local climate is the summer rainy season. The period from June to September is characterized not only by the highest temperatures—averaging 27°C in August—but also by the greatest number of rainy days. July stands out in particular, when precipitation is likely throughout most of the month. In contrast, winter is mild and drier, with average temperatures around 6-8°C, making it comfortable for those who prefer to avoid the heat. Spring and autumn are pleasant transitional seasons with moderate temperatures, ideal for exploring the city.

The climate in Anan is characterized by distinct seasons with notable temperature fluctuations throughout the year. The coldest month is January, when the average temperature is about 6.4°C, and nightly lows can drop to 3.8°C. Winter is generally mild and cool, without severe frosts, as temperatures stay steadily above freezing even during the coldest months (December–February). With the arrival of spring, the weather warms up quickly, and by May, the average temperature reaches a comfortable 18°C.

The summer period, especially July and August, is hot and humid in Anan. August is the peak of the heat with an average temperature of 27.0°C and daytime highs reaching nearly 29.1°C. Nights during this time are also very warm, which is characteristic of the local climate. Autumn brings a gradual cooling, transitioning from warm September days to a cool November. An interesting feature of the weather in Anan is the relatively small daily temperature fluctuations, especially in the summer months, when the difference between daytime and nighttime figures rarely exceeds 4-5°C, reflecting the high air humidity.

Anan experiences pronounced seasonal rainfall, which is characteristic of the climate in Japan. There is a clear pattern of a wet, rainy summer and a significantly drier and clearer winter. This contrast is important to keep in mind when planning your trip.

The peak of the rainy season occurs during the summer and early autumn months. In terms of volume, June and September are considered the wettest, with an average of 10 mm each. However, in terms of frequency, July is the absolute leader, with about 21 rainy days during the month. Overall, the period from June to September is characterized by high humidity and frequent, sometimes intense, rainfall.

The driest time of year is winter. In December and January, precipitation drops to a minimum—just 2 mm—and the number of rainy days decreases to 6-7 per month. Winter precipitation is generally negligible, making winter the most predictable and sunny season, albeit the coolest.

When planning a trip to Anan, it is important to consider the pronounced seasonal weather changes. The key principle for packing is layering, which will allow you to easily adapt to temperature shifts throughout the day. Regardless of the season, don't forget to pack comfortable walking shoes, as you will likely be doing a lot of exploring on foot. Given that rainy days are frequent, especially from March to October, a compact umbrella or a light waterproof jacket will be essential items in your luggage.

For a summer trip (June to August), when Anan is warm and humid, choose light, breathable clothing made from natural fabrics like cotton or linen. Be sure to bring sunscreen, a hat, and sunglasses. For the winter months (December to February), you will need more substantial warmth: a warm jacket, sweater, scarf, gloves, and a hat. In the transitional seasons—spring (March to May) and autumn (September to November)—the weather is at its most changeable. An ideal choice would be a combination of t-shirts, long-sleeved shirts, a fleece, and a windbreaker that can be layered as needed.