Taichung weather in May
May in Taichung: sweltering, soaked, with muggy air — a gamble, with 17 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#8 of 12 months in Taichung · #1217 of 1413 destinations to visit in May · comfort 57/100 (tier D)
- Days
- 30°C
- Nights
- 24°C
- Wet days
- 17
- Sun
- 9.5 h
- Humidity
- 81%
- Daylight
- 13 h

Traveller notes on Taichung in May
Notes from nearby Alishan (72 km away)
Taichung doesn't have its own notes for May yet — these are about Alishan, close enough to share the season.
Taiwan forum threads are direct that late May marks the start of the plum rain season, bringing rain on roughly half the days through the following weeks, with fog at Alishan described as an almost daily occurrence even outside heavy rain spells. The more typical pattern posters described was sunny mornings followed by afternoon thunderstorms lasting an hour or two before clearing again, rather than sustained all-day washouts. One specific frustration flagged repeatedly: the famous Alishan sunrise is genuinely hit-and-miss on foggy mornings, so visitors chasing it were advised to build in a backup morning if possible, and to always carry a proper rain jacket or poncho.
Other months in Taichung
Forum posters describe July and August in Taiwan as warm and humid, with temperatures commonly in the 33-36C range, and August sitting right in the middle of typhoon season (June through October), with August, July and September the three months most likely to see one make landfall. Posters are consistent that most summer rain actually comes as short, predictable afternoon thunderstorms lasting 30-60 minutes, with mornings typically sunny and clear - a pattern that lets visitors plan outdoor sightseeing for the morning and save indoor activities for the afternoon rain window. Posters note that if a typhoon does hit during a trip, it typically costs travelers one or two disrupted days with transport and parks shut down, though most storms just pass by without a direct hit. Posters generally rate August as hot, humid and genuinely typhoon-season for Taichung, workable with flexible plans and a morning-outdoor, afternoon-indoor rhythm.
Forum posters describe February in southern/central Taiwan as cool and pleasant, generally 15-20C, though cold snaps from the north can push temperatures down toward 10-12C with little warning even as some days climb into the high 20s. Winter counts as the dry season, which posters call a genuine advantage for outdoor sightseeing despite the cooler air. The standard packing list is layers - long pants, a light jacket, and a compact umbrella - with thicker layers reserved for any side trip up to higher-altitude spots like Alishan, and something warm for chilly evenings at the night markets.
Add your own note from Taichung's card on the map.
Taichung climate normals — May
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Taichung in May
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Shoulder seasonschool holidays in 2 of the markets that fill it, an ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Taichung's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherTaichung's weather peaks December–February.
Best weatherFair weatherToughest weather
Nearby, and something's on
Within 300 km of Taichung — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Taichung?
Taichung in May — FAQ
- Is May a good time to visit Taichung?
- May in Taichung: sweltering, soaked, with muggy air — a gamble, with 17 rainy days. It ranks #8 of 12 months for Taichung on SeasonMap's comfort score (57/100).
- What is the weather like in Taichung in May?
- In May, Taichung averages a daily high of 30.3°C and a low of 23.9°C, with about 206.9 mm of rain over roughly 16.5 rainy days.
- What is the air quality in Taichung in May?
- Taichung has a mean US Air Quality Index of about 93 in May.
Within 300 km: Sun Moon Lake's Firefly season around 1 Apr – 15 May, and Alishan's Firefly season around 10 Apr – 15 May.