Bad Honnef Weather in May
Average highs run from 18°C on May 1 to 21°C on May 31, and lows from 7°C to 10°C. Normal precipitation for the month is 62 mm over about 12 wet days.
May day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 20°C
- Average low
- 8°C
- Precipitation
- 62 mm
- Record high
- 34°CMay 29, 2017
- Record low
- -3°CMay 7, 1979
- Daylight
- 14 h 46 min to 16 h 08 min
- Cloud cover
- 72%
- Humidity
- 79%
- Dew point
- 8°C
- Wind
- 14.8 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 | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| May 1 | 18°C | 7°C | 30°C 2005 | -2°C 1962 | 43% |
| May 2 | 18°C | 6°C | 29°C 2025 | -2°C 1935 | 44% |
| May 3 | 18°C | 6°C | 27°C 1997 | -2°C 1981 | 44% |
| May 4 | 18°C | 6°C | 26°C 1990 | -1°C 2011 | 44% |
| May 5 | 18°C | 6°C | 28°C 1990 | -2°C 1942 | 43% |
| May 6 | 18°C | 6°C | 27°C 1990 | -1°C 1996 | 42% |
| May 7 | 19°C | 8°C | 29°C 1976 | -3°C 1979 | 43% |
| May 8 | 19°C | 8°C | 30°C 1976 | -2°C 1941 | 43% |
| May 9 | 20°C | 8°C | 31°C 1976 | -2°C 1938 | 43% |
| May 10 | 20°C | 8°C | 31°C 1976 | -1°C 2017 | 43% |
| May 11 | 20°C | 8°C | 30°C 1998 | 1°C 1980 | 44% |
| May 12 | 19°C | 8°C | 32°C 1998 | -1°C 2020 | 44% |
| May 13 | 19°C | 7°C | 32°C 1969 | -2°C 1941 | 45% |
| May 14 | 19°C | 8°C | 30°C 1969 | -1°C 1976 | 44% |
| May 15 | 19°C | 7°C | 31°C 1992 | -1°C 2020 | 45% |
| May 16 | 19°C | 7°C | 30°C 2000 | -1°C 2020 | 44% |
| May 17 | 20°C | 8°C | 30°C 1966 | -1°C 1941 | 43% |
| May 18 | 20°C | 8°C | 30°C 2022 | 0°C 2005 | 43% |
| May 19 | 20°C | 8°C | 30°C 2022 | 2°C 1991 | 42% |
| May 20 | 21°C | 9°C | 29°C 1932 | -1°C 1965 | 43% |
| May 21 | 20°C | 9°C | 29°C 2020 | 0°C 1965 | 43% |
| May 22 | 20°C | 9°C | 29°C 1966 | 1°C 1988 | 42% |
| May 23 | 20°C | 9°C | 30°C 2026 | 0°C 1980 | 43% |
| May 24 | 21°C | 8°C | 30°C 2012 | 1°C 1991 | 43% |
| May 25 | 21°C | 9°C | 30°C 2009 | -1°C 2013 | 42% |
| May 26 | 21°C | 9°C | 31°C 2026 | 1°C 1990 | 42% |
| May 27 | 21°C | 10°C | 32°C 2005 | 1°C 1990 | 43% |
| May 28 | 22°C | 11°C | 32°C 2005 | 2°C 1961 | 44% |
| May 29 | 22°C | 9°C | 34°C 2017 | 1°C 1990 | 45% |
| May 30 | 22°C | 10°C | 32°C 2011 | 1°C 1974 | 46% |
| May 31 | 21°C | 10°C | 31°C 1979 | 1°C 1994 | 46% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- May 1
- sunrise 6:06 AM, sunset 8:52 PM
- May 31
- sunrise 5:25 AM, sunset 9:33 PM
Other months
Sources
Records: NOAA GHCN-Daily, station GME00121042, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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.