Alishan

Chiayi County Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Chiayi County, Taiwan in September.

Thinking about venturing to Chiayi County, Taiwan this September and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What to Expect in Chiayi County in September

Chiayi County, Taiwan is a region in Taiwan. September in Chiayi County generally has temperatures that range from warm to very warm, with heavy precipitation.

Temperatures

Based on our climate data spanning from 1990-2020, the average maximum temperature is warm in Alishan at 26°C (79°F) to very warm in Chiayi City at 31°C (88°F). Nighttime temperatures generally drop to 23°C (73°F) in Chiayi City and 19°C (66°F) in Alishan. The temperatures mentioned for both day and night are typical averages. However some days might get even hotter. It's best to stay prepared by wearing cloths suitable for the warmth.

To learn more about the conditions in specific areas of Chiayi County, Taiwan, check out the map below.

Precipitation

In September, precipitation varies across different areas. From heavy rainfall in Chiayi City with an average of 405 mm (16 in) to heavy rainfall in Alishan with 468 mm (18 in).

Average sunshine

Sunshine levels are moderate in most locations. Chiayi City typically sees 179 hours of sunlight, creating comfortable conditions that aren't too bright or too dim. Looking for something sunnier? Our weather planner helps you discover destinations with more reliable sunshine.

Explore Chiayi County by month

Pick a month to see the average temperature, rainfall and sunshine in Chiayi County — and find the best time to visit. (based on Chiayi City)

Best Places to Visit in Chiayi County in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Chiayi County.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Chiayi County

What is the weather like in September for some of the most popular destinations in Chiayi County, Taiwan?

Temperature range in Chiayi County (September)

Precipitation variation in Chiayi County (September)

Chiayi City

In September Chiayi City generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are poor that month.

August
September
October
Max temperature
31°C (88°F)
31°C (88°F)
29°C (84°F)
Min temperature
24°C (75°F)
23°C (73°F)
21°C (70°F)
Monthly sun hours
189 hours
179 hours
196 hours
Monthly rainfall
617 mm (24 in)
405 mm (16 in)
181 mm (7.1 in)
Monthly rainy days
16 days
15 days
13 days
Weather conditions

Alishan

In September Alishan generally has high temperatures with maximum daytime temperatures around 26°C (79°F), minimum nighttime temperatures around 19°C (66°F) and heavy monthly rainfall. So on average the conditions are poor that month.

August
September
October
Max temperature
27°C (81°F)
26°C (79°F)
25°C (77°F)
Min temperature
20°C (68°F)
19°C (66°F)
17°C (63°F)
Monthly sun hours
189 hours
179 hours
196 hours
Monthly rainfall
684 mm (27 in)
468 mm (18 in)
228 mm (9 in)
Monthly rainy days
20 days
18 days
15 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Chiayi County, in Taiwan.

Popular cities in September

Day & night temperatures, rainfall and average weather in Chiayi County in September.

City Weather Day temp Night temp Rainfall
Chiayi City 31°C (88°F) 23°C (73°F) 405 mm (16 in)
Alishan 26°C (79°F) 19°C (66°F) 468 mm (18 in)

Chiayi County weather in September: frequently asked questions

What is the weather like in Chiayi County, Taiwan in September?

September in Chiayi County, Taiwan brings poor weather. In Chiayi City, daytime temperatures are typically around 31°C (88°F) and nighttime lows hover near 23°C (73°F).

What is the average temperature in Chiayi County, Taiwan in September?

Chiayi City averages a daytime maximum of 31°C (88°F) in September, with overnight lows close to 23°C (73°F).

Does Chiayi County, Taiwan get a lot of rain in September?

Yes. September brings heavy rainfall to Chiayi County, Taiwan, with Chiayi City averaging around 405 mm (16 in). Expect frequent showers and pack accordingly.

Is September a Good Time to Visit Chiayi County, Taiwan?

Given the typically poor weather conditions in Chiayi City, September may not be the ideal time to visit Chiayi County, Taiwan.

On average, the best time to visit Chiayi County, Taiwan is in January, February, November and December with generally perfect weather in Chiayi City. On the other hand, the weather in May, June, July, August and September tend to be poor.

Interested in more climate information?

We have much more information about the climate in Chiayi County.

Weather and climate has detailed information for every country in the world. Are you going to Taiwan? Get detailed historical weather averages for many cities in Taiwan.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.