SeasonMapSun Moon Lake (Yuchi) weather in May
Taiwan
May in Sun Moon Lake: hot, soaked, with muggy air — a gamble, with 26 rainy days.
#8 of 12 months in Sun Moon Lake · #1193 of 1383 destinations to visit in May · comfort 57/100 (tier D)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Sun Moon Lake in May
Other months in Sun Moon Lake
Sun Moon Lake's forum flags January and the other cooler months for fog — regulars describe it as a genuine hit-or-miss attraction depending on the day, since mist can roll in and cut the view. One recent visitor got lucky with plenty of sun and called the quieter winter atmosphere a different, still worthwhile kind of beautiful.
Add your own note from Sun Moon Lake's card on the map.
Sun Moon Lake climate normals — May
| Daytime high | 25°C / 77°F | 🥵 hot |
|---|---|---|
| Nighttime low | 18°C / 65°F | |
| Feels like (high) | 29°C / 84°F | |
| Rainfall | 328 mm / 12.9 in | ⛈ soaked |
| Rainy days | 26 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 18°C / 65°F | |
| Sunshine | 9.4 h/day | |
| Daylight | 13.3 h | |
| Wind | 6 km/h / 4 mph | |
| Air quality (US AQI) | 93 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Sun Moon Lake 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 Sun Moon Lake'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 weatherSun Moon Lake's weather peaks December–February.
Best weatherFair weatherToughest weather
What's on in Sun Moon Lake in May
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Firefly season
1 Apr – 15 May · usuallyFirefliesThe trails around Toushe and the lake's quieter southern shore fill with them for about six weeks in spring. Guided night walks only, and no torches.
- Season
Plum rain season
10 May – 20 Jun · usuallyMonsoonRiskThe front parks over central Taiwan for a few weeks of heavy afternoon rain. The lake is at its fullest and the cycle path round it is at its emptiest.
- Season
Wet season
MonsoonRisk26 rainy days and about 328 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Nearby, and something's on
Within 300 km of Sun Moon Lake — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Sun Moon Lake?
Sun Moon Lake in May — FAQ
- Is May a good time to visit Sun Moon Lake?
- May in Sun Moon Lake: hot, soaked, with muggy air — a gamble, with 26 rainy days. It ranks #8 of 12 months for Sun Moon Lake on SeasonMap's comfort score (57/100).
- What is the weather like in Sun Moon Lake in May?
- In May, Sun Moon Lake averages a daily high of 25.1°C and a low of 18.3°C, with about 327.7 mm of rain over roughly 25.5 rainy days.
- What is the air quality in Sun Moon Lake in May?
- Sun Moon Lake has a mean US Air Quality Index of about 93 in May.
Other months in Sun Moon Lake
Compare Sun Moon Lake in May
Warmer or cooler than Sun Moon Lake in May
Similar destinations in East Asia — May
Within 300 km: Alishan's Firefly season around 10 Apr – 15 May, and Kenting's Calm sea season around 1 Apr – 30 Sep.