Yilan

Stay up to date with the latest weather conditions in Yilan. Below you will find current data, forecasts, and helpful weather charts.

The city of Yilan in Taiwan features a humid subtropical climate. This means the weather is mostly warm and very humid year-round. Temperature fluctuations between seasons are moderate: summers are warm, with average temperatures around 25-26°C, while winters are mild, with averages of 13-14°C. Extreme heat or severe cold is uncommon for Yilan.

The most striking feature of Yilan's climate is the constant high probability of precipitation. Although the monthly rainfall in millimeters is not always high, the number of "rainy days" is impressive—ranging from 19 to 27 days per month throughout the year. This suggests that light rain or drizzle is a frequent occurrence. Summer (June-August) is the warmest period, while winter (December-February) brings cooler but still mild weather. Spring and autumn are comfortable transitional seasons.

Thus, travelers planning to visit Yilan should be prepared for frequent, though not always heavy, rain at any time of year. It is recommended to carry an umbrella or light waterproof clothing. Despite this, the mild temperature regime makes Yilan an attractive destination to visit year-round.

The city of Yilan experiences a subtropical monsoon climate with distinct but mild seasonal changes. The annual temperature range is quite moderate. The hottest month is usually July, when the average temperature reaches 25.7°C and maximum values can rise to 28.9°C. It is followed closely by August with an average temperature of 25.5°C. The coolest month is considered to be January, with an average temperature of 13.2°C and minimum values around 10.6°C; December is also cool, with an average temperature of 14.3°C.

Summer months in Yilan, from June to September, are characterized by warm and humid weather. Average daytime temperatures during this period range from 24.6°C in June to 25.7°C in July, with maximum values regularly exceeding 27-28°C. Winter, spanning December, January, and February, is quite mild here. Average temperatures stay in the range of 13.2°C to 14.4°C, and nightly minimums rarely drop significantly below 10°C. Frost is uncharacteristic for Yilan.

Temperature differences between day and night in Yilan exist but are not extreme. The difference between average monthly maximum and minimum temperatures is usually about 5-7°C. Spring (March-May) and autumn (October-November) are transitional seasons with comfortable temperatures that gradually rise toward summer and decrease toward winter. For example, in May the average temperature is 22.3°C, and in October it is 20.7°C, making these periods pleasant for visiting.

Yilan welcomes travelers with a humid climate characterized by frequent precipitation throughout the year. Instead of a distinct dry season, there are fluctuations in the intensity and total volume of rain, but the chance of encountering precipitation exists in almost any month. It is thanks to this that the region boasts lush greenery and picturesque landscapes.

The period from January to March is usually characterized by the lowest total precipitation. For example, in March, about 4 mm falls, making it the "driest" month by volume. Nevertheless, rainy days remain a frequent occurrence: an average of about 20 in March, 21 in January, and 19 in February. This indicates that precipitation during this time is most often light or in the form of drizzle.

Starting in May, the amount and frequency of rain increase noticeably, ushering in the wettest periods of the year. June and October stand out as the months with the highest average precipitation—about 15 mm each. May and June also lead in the number of rainy days: rain is expected approximately 27 days per month. July, August, September, and November also see significant precipitation, with the number of rainy days ranging from 22 to 24.

Therefore, when planning a trip to Yilan, it's worth being prepared for rain regardless of the time of year. Although early spring may bring slightly less total precipitation, the likelihood of wet weather remains high. The period from late spring to autumn (May to October) is typically the rainiest in terms of both volume and the number of days with precipitation.

When planning a trip to Yilan, it is important to consider its humid subtropical climate with frequent precipitation throughout the year. Regardless of the season, a good umbrella or light waterproof jacket will be an indispensable companion, as the number of rainy days is significant even with moderate total rainfall. Comfortable walking shoes, preferably water-resistant, are also crucial for comfortably exploring the city and its surroundings. Don't forget an adapter for your electronics if necessary for your devices.

During the cooler months from December to March, when average temperatures range from 13°C to 16°C and minimums can drop to 10-12°C, layering is recommended. Light sweaters, fleece jackets, long-sleeved T-shirts, and a windbreaker or a medium-weight jacket will help you stay comfortable. Long pants are also appropriate. While snow is extremely rare here, the morning and evening chill combined with the humidity can feel quite noticeable.

From April to November, Yilan experiences warm to hot weather, with average temperatures from 19°C to 25°C, peaking at around 28-29°C in July and August. During this period, light, breathable clothing made from natural fabrics is preferred: T-shirts, shorts, skirts, and sundresses. However, given the high probability of rain, a light raincoat will still come in handy. Sunscreen, a hat, and sunglasses are essential for UV protection, especially in the summer months. The layering principle remains relevant even in the warm season, as indoor air conditioning can create a noticeable contrast with the outdoor heat.