Yilan Weather in May
Average highs run from 25°C on May 1 to 27°C on May 31, and lows from 22°C to 24°C. Normal precipitation for the month is 208 mm over about 22 wet days.
May day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
May at a glance
- Average high
- 26°C
- Average low
- 23°C
- Precipitation
- 208 mm
- Reanalysis high
- 32°CMay 26, 2018
- Reanalysis low
- 16°CMay 2, 1991
- Daylight
- 13 h 05 min to 13 h 34 min
- Cloud cover
- 81%
- Humidity
- 85%
- Dew point
- 22°C
- Wind
- 15.5 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| May 1 | 25°C | 22°C | 31°C 2005 | 18°C 2013 | 65% |
| May 2 | 25°C | 22°C | 30°C 2018 | 16°C 1991 | 65% |
| May 3 | 26°C | 22°C | 29°C 2004 | 18°C 1991 | 65% |
| May 4 | 26°C | 22°C | 30°C 2020 | 19°C 1995 | 65% |
| May 5 | 26°C | 22°C | 30°C 2005 | 19°C 2008 | 65% |
| May 6 | 26°C | 23°C | 30°C 2016 | 17°C 2014 | 66% |
| May 7 | 26°C | 23°C | 31°C 2003 | 20°C 1996 | 66% |
| May 8 | 26°C | 23°C | 30°C 2012 | 19°C 1996 | 66% |
| May 9 | 26°C | 23°C | 30°C 2020 | 20°C 1999 | 65% |
| May 10 | 26°C | 23°C | 30°C 2016 | 20°C 1999 | 64% |
| May 11 | 26°C | 23°C | 32°C 2011 | 19°C 2008 | 64% |
| May 12 | 26°C | 23°C | 30°C 2004 | 19°C 2008 | 64% |
| May 13 | 26°C | 23°C | 29°C 1997 | 21°C 1996 | 63% |
| May 14 | 26°C | 23°C | 31°C 2014 | 20°C 2011 | 64% |
| May 15 | 26°C | 23°C | 31°C 2002 | 21°C 1995 | 65% |
| May 16 | 26°C | 23°C | 30°C 2004 | 20°C 2016 | 66% |
| May 17 | 27°C | 23°C | 30°C 1999 | 20°C 2016 | 65% |
| May 18 | 27°C | 23°C | 31°C 1999 | 20°C 1996 | 64% |
| May 19 | 27°C | 23°C | 29°C 2018 | 21°C 1999 | 65% |
| May 20 | 27°C | 24°C | 30°C 2018 | 21°C 1999 | 67% |
| May 21 | 27°C | 24°C | 30°C 1991 | 20°C 1992 | 68% |
| May 22 | 27°C | 24°C | 31°C 1991 | 20°C 1992 | 70% |
| May 23 | 27°C | 24°C | 32°C 1991 | 20°C 1995 | 70% |
| May 24 | 27°C | 24°C | 31°C 1991 | 21°C 1997 | 71% |
| May 25 | 27°C | 24°C | 30°C 2018 | 21°C 1997 | 71% |
| May 26 | 27°C | 24°C | 32°C 2018 | 21°C 1992 | 71% |
| May 27 | 27°C | 24°C | 30°C 2018 | 20°C 1999 | 71% |
| May 28 | 27°C | 24°C | 31°C 2018 | 20°C 1999 | 71% |
| May 29 | 27°C | 24°C | 32°C 2016 | 20°C 2011 | 71% |
| May 30 | 27°C | 24°C | 31°C 1991 | 21°C 1993 | 70% |
| May 31 | 27°C | 24°C | 32°C 2018 | 21°C 2010 | 70% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+8).
- May 1
- sunrise 5:18 AM, sunset 6:23 PM
- May 31
- sunrise 5:04 AM, sunset 6:38 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.