Rians Weather in May
Average highs run from 21°C on May 1 to 25°C on May 31, and lows from 11°C to 16°C. Normal precipitation for the month is 38 mm over about 8 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
- 23°C
- Average low
- 13°C
- Precipitation
- 38 mm
- Record high
- 35°CMay 24, 2009
- Record low
- 0°CMay 1, 1960
- Daylight
- 14 h 09 min to 15 h 12 min
- Cloud cover
- 57%
- Humidity
- 66%
- Dew point
- 9°C
- Wind
- 14.4 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 | 21°C | 11°C | 28°C 1994 | 0°C 1960 | 29% |
| May 2 | 21°C | 12°C | 27°C 2005 | 3°C 1960 | 29% |
| May 3 | 22°C | 12°C | 27°C 2006 | 4°C 1960 | 29% |
| May 4 | 21°C | 12°C | 32°C 1927 | 5°C 1925 | 28% |
| May 5 | 22°C | 12°C | 30°C 2003 | 5°C 1931 | 28% |
| May 6 | 22°C | 12°C | 31°C 2003 | 2°C 1948 | 27% |
| May 7 | 23°C | 12°C | 27°C 1988 | 4°C 1957 | 28% |
| May 8 | 22°C | 13°C | 29°C 2023 | 2°C 1926 | 26% |
| May 9 | 23°C | 13°C | 28°C 1995 | 3°C 1926 | 26% |
| May 10 | 23°C | 13°C | 29°C 1922 | 4°C 1926 | 24% |
| May 11 | 23°C | 13°C | 31°C 1958 | 4°C 1949 | 24% |
| May 12 | 23°C | 14°C | 32°C 2012 | 3°C 1949 | 25% |
| May 13 | 23°C | 13°C | 29°C 1947 | 4°C 1928 | 25% |
| May 14 | 23°C | 13°C | 29°C 1998 | 3°C 1927 | 24% |
| May 15 | 23°C | 13°C | 29°C 1992 | 5°C 1995 | 24% |
| May 16 | 23°C | 13°C | 30°C 1943 | 5°C 1933 | 24% |
| May 17 | 24°C | 13°C | 29°C 1992 | 5°C 2012 | 23% |
| May 18 | 23°C | 14°C | 29°C 1971 | 4°C 1935 | 22% |
| May 19 | 23°C | 13°C | 31°C 2022 | 5°C 1935 | 21% |
| May 20 | 24°C | 13°C | 30°C 1974 | 4°C 1923 | 21% |
| May 21 | 24°C | 13°C | 31°C 1950 | 3°C 1935 | 21% |
| May 22 | 25°C | 14°C | 31°C 2007 | 6°C 1923 | 21% |
| May 23 | 25°C | 14°C | 33°C 2009 | 3°C 1955 | 22% |
| May 24 | 26°C | 14°C | 35°C 2009 | 5°C 1936 | 22% |
| May 25 | 26°C | 14°C | 33°C 2007 | 5°C 1923 | 22% |
| May 26 | 26°C | 15°C | 32°C 1922 | 7°C 1932 | 22% |
| May 27 | 26°C | 15°C | 33°C 2022 | 6°C 1928 | 21% |
| May 28 | 25°C | 15°C | 33°C 2006 | 7°C 1927 | 22% |
| May 29 | 26°C | 15°C | 32°C 1922 | 6°C 1957 | 22% |
| May 30 | 26°C | 15°C | 32°C 2026 | 8°C 1961 | 23% |
| May 31 | 25°C | 16°C | 32°C 1927 | 8°C 1955 | 24% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- May 1
- sunrise 6:30 AM, sunset 8:39 PM
- May 31
- sunrise 5:59 AM, sunset 9:11 PM
Other months
Sources
Records: NOAA GHCN-Daily, station FR000007650, 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 2026-09-29. Sun and moon: computed with the NOAA solar equations and Meeus.