Climate averages 1991–2020

Yilan, Taiwan weather
in April.

A warm, very wet month: the 7th warmest and the 3rd driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 23.6°C Daytime mean, April
Average low 18.0°C Night-time mean, April
Rainfall 185 mm 21 days with ≥1 mm
Daylight 13 h Sunrise to sunset, per day
Every month in Yilan · average highYear overview

April is a warm month in Yilan, Taiwan: daytime highs average 23.6°C and nights cool to about 18.0°C. By daytime temperature it is the 7th warmest of the 12 months.

Expect about 185 mm of rain on roughly 21 days, which makes April a very wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 43 min on an average April day.

The nearest other city in this atlas is Neihu (40 km away). In April its highs average 24.2°C, 0.5°C warmer than Yilan, Taiwan, with 132 mm of rain.

Among the 28 cities listed in Taiwan, Yilan, Taiwan ranks joint 27th of 28 for the warmest April highs and 26th of 28 for the driest April (rainfall, lowest first). The mean April high of those 28 cities is 25.1°C; Yilan, Taiwan is 1.5°C cooler than that mean.

From April to May, average highs rise by 2.7°C to 26.4°C, and monthly rainfall rises from 185 mm to 297 mm.

The annual picture

April in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 101520253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 4000

Averages 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

1991–2020
Monthly climate averages for Yilan, Taiwan, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 17.5°C13.4°C13.4°C19022.010.811 h
February 18.3°C13.6°C13.6°C16519.911.311 h
March 20.6°C15.1°C15.1°C15119.912.012 h
April, selected 23.6°C18.0°C18.0°C18520.712.713 h
May 26.4°C21.4°C21.4°C29725.213.313 h
June 28.8°C24.2°C24.2°C31925.313.614 h
July 30.1°C25.5°C25.5°C27122.313.514 h
August 29.7°C25.4°C25.4°C32922.913.013 h
September 27.8°C23.7°C23.7°C33620.512.312 h
October 24.7°C21.1°C21.1°C39421.611.612 h
November 22.1°C18.5°C18.5°C33621.011.011 h
December 18.8°C15.1°C15.1°C24321.710.611 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

April in nearby cities

Distance from Yilan

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 limits

How 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.