Climate averages 1991–2020
Yilan, Taiwan weather
in January.
A mild, very wet month: the coolest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a mild month in Yilan, Taiwan: daytime highs average 17.5°C and nights cool to about 13.4°C. By daytime temperature it is the coolest month of the year.
Expect about 190 mm of rain on roughly 22 days, which makes January a very wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 47 min on an average January day.
The nearest other city in this atlas is Neihu (40 km away). In January its highs average 17.9°C, about as warm as Yilan, Taiwan, with 87 mm of rain.
Among the 28 cities listed in Taiwan, Yilan, Taiwan ranks joint 23rd of 28 for the warmest January highs and 26th of 28 for the driest January (rainfall, lowest first). The mean January high of those 28 cities is 19.0°C; Yilan, Taiwan is 1.6°C cooler than that mean.
From January to February, average highs rise by 0.8°C to 18.3°C, and monthly rainfall falls from 190 mm to 165 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Neihu in JanuaryTaiwan · 40 kmHigh 17.9°C · Low 14.2°C · 87 mm rain
- Taipei in JanuaryTaiwan · 40 kmHigh 17.7°C · Low 13.6°C · 87 mm rain
- Banqiao in JanuaryTaiwan · 41 kmHigh 17.4°C · Low 12.4°C · 87 mm rain
- Keelung in JanuaryTaiwan · 42 kmHigh 18.0°C · Low 14.7°C · 178 mm rain
- Shulin in JanuaryTaiwan · 42 kmHigh 17.3°C · Low 12.5°C · 87 mm rain
- Sanxia in JanuaryTaiwan · 43 kmHigh 18.2°C · Low 12.5°C · 70 mm rain
- Bade in JanuaryTaiwan · 51 kmHigh 17.4°C · Low 12.0°C · 70 mm rain
- Taoyuan in JanuaryTaiwan · 53 kmHigh 16.9°C · Low 12.5°C · 70 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.