Weather in Chiayi

Planning a trip to Chiayi? In this section, you will find the most up-to-date weather information, including detailed forecasts and clear charts, to make your journey as comfortable as possible.

The climate in the city of Chiayi, located in Taiwan, can be described as humid subtropical. This means that warm weather prevails here throughout the year, though with noticeable seasonal fluctuations in both temperature and rainfall levels. Winter months, such as January and December, are characterised by mildness, with average temperatures around 17-19°C, while summer months, especially July and August, are quite hot and humid, with average temperatures rising to 27°C and above.

Two main seasons are clearly distinguishable in Chiayi. The period from May to September can be considered the rainy season. During this time, significantly more precipitation falls, and the number of rainy days increases sharply, reaching a maximum in August (28 days with precipitation). Conversely, the months from November to March are characterised as a drier season, with minimal precipitation (only 2-3 mm per month) and fewer cloudy days. Spring (March-April) and autumn (October-November) are comfortable transitional periods with pleasant temperatures and moderate humidity.

Thus, travellers planning a trip to Chiayi should expect warm weather at any time of the year. However, for those who prefer to avoid heavy rainfall and high humidity, the most favourable time to visit would be the months from late autumn to early spring. Summer months, despite the heat and frequent rains, may be of interest to those wishing to see lush tropical greenery in full bloom.

Chiayi experiences a warm climate throughout the year, with distinct yet mild seasonal variations. The hottest month is usually July, when the average temperature reaches 27.4°C, and maximum daytime values can rise to 30.3°C. June and August are also characterised by high temperatures, close to July figures, with average values of 26.7°C and 26.9°C respectively. The coolest month is considered to be January, with an average temperature of 17.3°C and minimum night-time temperatures around 13.7°C. December also brings cooler weather with an average temperature of 18.7°C, but frost is not characteristic of the region.

The summer period in Chiayi, spanning roughly from May to September, is distinguished by consistently hot and humid weather. Average daytime temperatures during these months range from 28.8°C in May to 30.3°C in July, creating the sensation of a true tropical summer. Nights also remain very warm, with minimum temperatures rarely dropping below 22.5°C (in May) and reaching 24.5°C (in July). Such consistently high temperatures day and night are typical for this season, which should be taken into account when planning activities.

Winter in Chiayi, from December to February, is mild and relatively comfortable. Average daytime temperatures hold in the range of 21.0°C - 22.4°C, allowing for enjoyable outdoor walks. At night, the temperature drops to 13.7°C - 15.4°C, which may require a light jacket or sweater, especially in January. Daily temperature fluctuations in the winter months are somewhat more pronounced than in summer, reaching approximately 7-8°C (for example, in January the difference between the maximum of 21.0°C and the minimum of 13.7°C is 7.3°C). In summer months, such as July, this difference is smaller, around 5.8°C (30.3°C max and 24.5°C min).

In the city of Chiayi, a distinct seasonal distribution of precipitation is observed throughout the year. The character of the weather changes significantly from dry winter months to a wet summer period. Snow does not fall here; all precipitation comes in the form of rain.

The wettest period in Chiayi falls during the summer months, with a peak in August. In this month, an average of 15 mm of precipitation falls, and the number of rainy days reaches 28. June and July are also characterised by a significant amount of precipitation (13 mm and 11 mm respectively) and a high frequency of rain – about 25-26 days with precipitation. May is also quite wet, with 11 mm of precipitation and 19 rainy days, marking the beginning of the rainy season.

The dry season lasts from November to April. The driest months are January, February, November, and December, when the average monthly precipitation is only 2 mm. The number of rainy days in these months varies: from 8 days in January and February to 11 days in November, with December seeing 9 rainy days. In March and April, a slight increase in precipitation (3-4 mm) and the number of rainy days (11-13 days) is observed, marking the transition to a wetter period.

When planning a trip to Chiayi, it is important to consider your wardrobe with the local climate in mind. Regardless of the season, comfortable shoes for walking will be your best friend. The weather in Chiayi can be changeable, so the principle of layering clothes will help you easily adapt to temperature changes throughout the day. Given that precipitation is possible even in dry months, and from May to August the number of rainy days can reach 28 per month, a compact umbrella or a light raincoat are mandatory companions for the traveller.

The period from May to October in Chiayi is characterised by warm and humid weather. The average air temperature stays within 25-27°C, and sometimes rises even higher. At this time of year, your suitcase should contain light, breathable clothing made from natural materials such as cotton or linen: t-shirts, shorts, and summer dresses. Do not forget sunscreen with a high SPF, a hat for sun protection, and, of course, reliable rain protection, as this is the wettest season with frequent downpours.

If your trip to Chiayi falls between November and April, expect cooler conditions. The coldest months – December, January, and February – have average temperatures around 17-18°C and minimum values dropping to 13-15°C. During this period, a light jacket, sweater, or fleece will come in handy. November, as well as March and April, are usually warmer, with average temperatures of 20-23°C, however, evenings can still be fresh, so an extra layer of warm clothing will not go amiss. Long trousers and long-sleeved shirts will be appropriate. Although there is significantly less precipitation in these months than in summer, it is still worth having a small umbrella with you in case of unexpected rain.