Adelaide weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Good
Best time to visit: October – April
What is the weather like in Adelaide in May?
In May, Adelaide is mild: daytime highs average 18 °C, and nights cool down to about 10 °C. The sea averages 17.3 °C – bracing, so a wetsuit helps for longer swims. Expect around 6 hours of sunshine a day. Rain falls on about 8 days, adding up to 45 mm. All in all, May is a good month for a holiday in Adelaide.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 10 h 20 min07:02 – 17:21
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 21 km/haverage daily peakAll months
- Cloud cover
- 51 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+9:30Australia/Adelaide
How the score comes together
- Temperatureweight 50 %96 %
- Sunshineweight 20 %42 %
- Few rainy daysweight 30 %74 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Sunscreen
- A jumper for the evenings
Adelaide in May: quick answers
Is Adelaide hot in May?
No. In May, Adelaide is mild: daytime highs average 18 °C and nights drop to about 10 °C.
Can you swim in Adelaide in May?
Only if you don't mind cold water: in May the sea averages just 17.3 °C. Comfortable swimming is possible from January to March.
Does it rain much in Adelaide in May?
Rain falls on about 8 days, adding up to 45 mm.
Adelaide month by month
The whole year in AdelaideAll destinations: AustraliaWhere to go in MaySea temperature in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences