Yilan City Weather in May
May in Yilan City sees daytime temperatures around 27°C (81°F) and lows of 21°C (70°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.
Rainfall in Yilan City in May
Yilan City is in the rainy season in May, with rain on around 21 days and an average of 302 mm (12 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.
Temperature in Yilan City in May
In May, Yilan City gets high temperatures, with highs of 27°C (81°F). Nights cool to around 21°C (70°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights are mild at around 21°C (70°F), which is comfortable for most people.
Sunshine in Yilan City in May
With about 115 hours of sunshine, the area enjoys a nice balance of sun and rainy moments, creating a pleasant environment.If you're looking for dry conditions and comfortable temperatures, May may not be the ideal month to visit Yilan City. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Taiwan, check out our Yilan City's climate page.
Yilan City Temperature in May
Min Temperature
21°C (70°F)
Max Temperature
27°C (81°F)
Chance of Rain
69%
Precipitation
302 mm (12 in)
Rainy days
21 days
Humidity
84%
Sunshine
115 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Yilan City typically stay consistent throughout May, with daily highs averaging around 27°C (81°F). Nights are warm, with lows typically ranging from 21°C (70°F) to 23°C (73°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Yilan City in May
Browse day-by-day weather records for Yilan City spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Yilan City historical weather extremes in May
Based on 49 years of weather observations in Yilan City between 1976 and 2025, these are the recorded extremes.
- On May 28, 2021, temperatures climbed to 37°C (99°F), marking the warmest May day on record.
- The coldest May day was on May 2, 2022, with a maximum of 17°C (63°F).
- Yilan City registered its coldest May night on May 2, 1991, with temperatures dropping to 14°C (57°F).
Best Places in Taiwan in May
Find out more about the weather in Taiwan and which places have the best travel conditions in this month. See all of Taiwan in May →
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What to Wear in Yilan City in May
Warm weather calls for comfortable, breathable clothing in May. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Yilan City in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Taiwan, check out our Yilan City's climate page.
Temperature Rainfall Sunshine Humidity
See the full Yilan City climate overview or explore weather in Taiwan.
