Climate averages 1991–2020

Yilan, Taiwan weather
in July.

A hot, very wet month: the warmest and the 6th driest of the year.

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

Average high 30.1°C Daytime mean, July
Average low 25.5°C Night-time mean, July
Rainfall 271 mm 22 days with ≥1 mm
Daylight 14 h Sunrise to sunset, per day
Every month in Yilan · average highYear overview

July is a hot month in Yilan, Taiwan: daytime highs average 30.1°C and nights cool to about 25.5°C. By daytime temperature it is the warmest month of the year.

Expect about 271 mm of rain on roughly 22 days, which makes July a very wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 31 min on an average July day.

The nearest other city in this atlas is Neihu (40 km away). In July its highs average 30.9°C, 0.8°C warmer than Yilan, Taiwan, with 226 mm of rain.

Among the 28 cities listed in Taiwan, Yilan, Taiwan ranks joint 15th of 28 for the warmest July highs and 17th of 28 for the driest July (rainfall, lowest first). The mean July high of those 28 cities is 30.1°C; Yilan, Taiwan is level with that mean.

From July to August, average highs fall by 0.4°C to 29.7°C, and monthly rainfall rises from 271 mm to 329 mm.

The annual picture

July 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 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, selected 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

July 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.