Climate averages 1991–2020
Yilan, Taiwan weather
in May.
A warm, very wet month: the 5th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Yilan, Taiwan: daytime highs average 26.4°C and nights cool to about 21.4°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 297 mm of rain on roughly 25 days, which makes May a very wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 20 min on an average May day.
The nearest other city in this atlas is Neihu (40 km away). In May its highs average 27.0°C, 0.7°C warmer than Yilan, Taiwan, with 200 mm of rain.
Among the 28 cities listed in Taiwan, Yilan, Taiwan ranks 27th of 28 for the warmest May highs and 23rd of 28 for the driest May (rainfall, lowest first). The mean May high of those 28 cities is 27.5°C; Yilan, Taiwan is 1.1°C cooler than that mean.
From May to June, average highs rise by 2.5°C to 28.8°C, and monthly rainfall rises from 297 mm to 319 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Yilan, Taiwan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 17.5°C13.4°C | 13.4°C | 190 | 22.0 | 10.811 h |
| February | 18.3°C13.6°C | 13.6°C | 165 | 19.9 | 11.311 h |
| March | 20.6°C15.1°C | 15.1°C | 151 | 19.9 | 12.012 h |
| April | 23.6°C18.0°C | 18.0°C | 185 | 20.7 | 12.713 h |
| May, selected | 26.4°C21.4°C | 21.4°C | 297 | 25.2 | 13.313 h |
| June | 28.8°C24.2°C | 24.2°C | 319 | 25.3 | 13.614 h |
| July | 30.1°C25.5°C | 25.5°C | 271 | 22.3 | 13.514 h |
| August | 29.7°C25.4°C | 25.4°C | 329 | 22.9 | 13.013 h |
| September | 27.8°C23.7°C | 23.7°C | 336 | 20.5 | 12.312 h |
| October | 24.7°C21.1°C | 21.1°C | 394 | 21.6 | 11.612 h |
| November | 22.1°C18.5°C | 18.5°C | 336 | 21.0 | 11.011 h |
| December | 18.8°C15.1°C | 15.1°C | 243 | 21.7 | 10.611 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Neihu in MayTaiwan · 40 kmHigh 27.0°C · Low 22.4°C · 200 mm rain
- Taipei in MayTaiwan · 40 kmHigh 27.2°C · Low 22.0°C · 200 mm rain
- Banqiao in MayTaiwan · 41 kmHigh 27.2°C · Low 21.2°C · 200 mm rain
- Keelung in MayTaiwan · 42 kmHigh 26.7°C · Low 22.9°C · 163 mm rain
- Shulin in MayTaiwan · 42 kmHigh 27.0°C · Low 21.1°C · 200 mm rain
- Sanxia in MayTaiwan · 43 kmHigh 28.2°C · Low 21.6°C · 140 mm rain
- Bade in MayTaiwan · 51 kmHigh 27.2°C · Low 20.9°C · 140 mm rain
- Taoyuan in MayTaiwan · 53 kmHigh 26.6°C · Low 21.2°C · 140 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Yilan) is explained once on the Yilan, Taiwan year overview and on the Sources, method and limits page.