Ganghwa-gun Weather in May
Average highs run from 15°C on May 1 to 19°C on May 31, and lows from 10°C to 15°C. Normal precipitation for the month is 93 mm over about 9 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
- 17°C
- Average low
- 12°C
- Precipitation
- 93 mm
- Reanalysis high
- 24°CMay 21, 2016
- Reanalysis low
- 7°CMay 1, 2010
- Daylight
- 13 h 45 min to 14 h 35 min
- Cloud cover
- 58%
- Humidity
- 82%
- Dew point
- 11°C
- Wind
- 15.1 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 | 15°C | 10°C | 20°C 2017 | 7°C 2010 | 25% |
| May 2 | 15°C | 10°C | 21°C 2012 | 7°C 2000 | 25% |
| May 3 | 15°C | 10°C | 21°C 2020 | 8°C 2014 | 26% |
| May 4 | 15°C | 10°C | 19°C 2017 | 8°C 2013 | 27% |
| May 5 | 15°C | 10°C | 21°C 2003 | 8°C 1996 | 28% |
| May 6 | 15°C | 11°C | 21°C 2009 | 7°C 2005 | 28% |
| May 7 | 16°C | 11°C | 20°C 2020 | 7°C 2005 | 26% |
| May 8 | 16°C | 11°C | 20°C 2012 | 8°C 2003 | 26% |
| May 9 | 16°C | 11°C | 21°C 2000 | 9°C 2005 | 27% |
| May 10 | 16°C | 11°C | 20°C 2014 | 8°C 2005 | 28% |
| May 11 | 16°C | 11°C | 20°C 1994 | 9°C 2010 | 29% |
| May 12 | 16°C | 11°C | 19°C 2009 | 8°C 2010 | 30% |
| May 13 | 16°C | 12°C | 21°C 2003 | 9°C 2010 | 30% |
| May 14 | 16°C | 12°C | 21°C 2003 | 9°C 2011 | 28% |
| May 15 | 17°C | 12°C | 21°C 2003 | 10°C 1993 | 27% |
| May 16 | 17°C | 12°C | 20°C 2013 | 10°C 2011 | 28% |
| May 17 | 17°C | 12°C | 22°C 1999 | 11°C 2011 | 28% |
| May 18 | 17°C | 12°C | 21°C 2016 | 10°C 1994 | 28% |
| May 19 | 17°C | 13°C | 24°C 2016 | 9°C 1994 | 26% |
| May 20 | 17°C | 13°C | 23°C 2016 | 10°C 2008 | 25% |
| May 21 | 18°C | 13°C | 24°C 2016 | 10°C 2013 | 25% |
| May 22 | 18°C | 13°C | 24°C 2016 | 11°C 2011 | 25% |
| May 23 | 18°C | 13°C | 23°C 2001 | 11°C 1993 | 25% |
| May 24 | 18°C | 14°C | 23°C 2008 | 11°C 1997 | 24% |
| May 25 | 18°C | 14°C | 23°C 2013 | 11°C 1992 | 23% |
| May 26 | 18°C | 14°C | 22°C 2003 | 12°C 1992 | 23% |
| May 27 | 19°C | 14°C | 23°C 2009 | 12°C 1992 | 22% |
| May 28 | 19°C | 14°C | 23°C 2009 | 11°C 1999 | 22% |
| May 29 | 19°C | 14°C | 23°C 1993 | 12°C 1999 | 21% |
| May 30 | 19°C | 15°C | 22°C 2014 | 12°C 1994 | 21% |
| May 31 | 19°C | 15°C | 23°C 2003 | 13°C 2013 | 20% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+9).
- May 1
- sunrise 5:39 AM, sunset 7:24 PM
- May 31
- sunrise 5:14 AM, sunset 7:49 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.