Sydney Weather in May
Average highs run from 22°C on May 1 to 19°C on May 31, and lows from 14°C to 10°C. Normal precipitation for the month is 90 mm over about 9 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
- 21°C
- Average low
- 12°C
- Precipitation
- 90 mm
- Record high
- 30°CMay 13, 1957
- Record low
- 3°CMay 22, 1965
- Daylight
- 10 h 46 min to 10 h 04 min
- Cloud cover
- 53%
- Humidity
- 72%
- Dew point
- 12°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 | 22°C | 14°C | 29°C 1994 | 7°C 1952 | 30% |
| May 2 | 22°C | 14°C | 27°C 1942 | 8°C 1957 | 30% |
| May 3 | 22°C | 14°C | 29°C 1942 | 8°C 1957 | 30% |
| May 4 | 22°C | 14°C | 29°C 1942 | 7°C 1970 | 30% |
| May 5 | 21°C | 13°C | 29°C 2015 | 6°C 1961 | 30% |
| May 6 | 22°C | 13°C | 27°C 1985 | 7°C 1962 | 30% |
| May 7 | 22°C | 13°C | 28°C 1973 | 6°C 1944 | 29% |
| May 8 | 21°C | 12°C | 28°C 2020 | 7°C 1961 | 28% |
| May 9 | 22°C | 12°C | 27°C 2020 | 4°C 1960 | 28% |
| May 10 | 21°C | 13°C | 28°C 2012 | 4°C 1961 | 28% |
| May 11 | 21°C | 12°C | 28°C 1957 | 5°C 1960 | 27% |
| May 12 | 20°C | 12°C | 28°C 1957 | 7°C 1945 | 28% |
| May 13 | 21°C | 13°C | 30°C 1957 | 6°C 1972 | 28% |
| May 14 | 20°C | 12°C | 27°C 1974 | 6°C 1978 | 28% |
| May 15 | 20°C | 12°C | 27°C 1958 | 6°C 1961 | 29% |
| May 16 | 20°C | 12°C | 26°C 1963 | 6°C 1945 | 30% |
| May 17 | 21°C | 12°C | 29°C 2016 | 5°C 1965 | 30% |
| May 18 | 20°C | 12°C | 25°C 1947 | 5°C 1965 | 30% |
| May 19 | 21°C | 12°C | 26°C 2003 | 3°C 1970 | 31% |
| May 20 | 21°C | 12°C | 26°C 2014 | 5°C 1965 | 30% |
| May 21 | 20°C | 12°C | 28°C 2019 | 4°C 1965 | 30% |
| May 22 | 20°C | 12°C | 27°C 2014 | 3°C 1965 | 30% |
| May 23 | 20°C | 12°C | 28°C 2016 | 5°C 1959 | 32% |
| May 24 | 20°C | 12°C | 28°C 1958 | 4°C 1957 | 31% |
| May 25 | 20°C | 12°C | 29°C 1994 | 5°C 1957 | 31% |
| May 26 | 20°C | 11°C | 25°C 2014 | 4°C 1964 | 33% |
| May 27 | 20°C | 11°C | 25°C 2014 | 4°C 1967 | 34% |
| May 28 | 20°C | 11°C | 25°C 2014 | 5°C 1964 | 34% |
| May 29 | 19°C | 11°C | 25°C 2018 | 4°C 1964 | 35% |
| May 30 | 19°C | 10°C | 25°C 2024 | 4°C 1977 | 35% |
| May 31 | 19°C | 10°C | 25°C 2013 | 5°C 1956 | 34% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+10).
- May 1
- sunrise 6:29 AM, sunset 5:15 PM
- May 31
- sunrise 6:51 AM, sunset 4:55 PM
Other months
Sources
Records: NOAA GHCN-Daily, station ASN00066037, 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 2026-09-26. Sun and moon: computed with the NOAA solar equations and Meeus.