Adelaide Weather in May
Adelaide in May averages 18°C (64°F) during the day and 11°C (52°F) at night. Some rainfall is typical for this time of year.
Rainfall in Adelaide in May
You can expect rain on roughly 8 days based on historical data, averaging 53 mm (2.1 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Adelaide in May
Daytime highs in Adelaide in May reach 18°C (64°F), with nights around 11°C (52°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Adelaide in May
The area enjoys a balanced 166 hours of sunlight, ensuring it's neither too overcast nor too sunny.
Wind Speed in Adelaide in May
Wind speeds average 4 m/s (8 knots) during May. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.
Average water temperature in May
The water sits at 21°C (70°F), which is a nice temperature for swimming. Not too cold, not too warm — most visitors are happy to spend time in the water.If you prefer dry days with pleasant temperatures, January, February, March, April, October, November and December typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Adelaide's climate page.
Adelaide Temperature in May
Min Temperature
11°C (52°F)
Max Temperature
18°C (64°F)
Water Temperature
21°C (70°F)
Chance of Rain
25%
Precipitation
53 mm (2.1 in)
Rainy days
8 days
Humidity
55%
Windspeed
4 m/s (8 knots)
Sunshine
166 hours
Percentage Sunshine
69%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Adelaide typically drop from around 20°C (68°F) at the start of May to approximately 17°C (63°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 11°C (52°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Adelaide in May
Browse day-by-day weather records for Adelaide spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Adelaide historical weather extremes in May
Based on weather observations in Adelaide between 1976 and 2026, these are the recorded extremes during May.
- The hottest May day on record in Adelaide reached 30°C (86°F) (May 1, 2026).
- On May 27, 2000, Adelaide saw its coldest May day with temperatures maxing out at 11°C (52°F).
- Nighttime temperatures dropped to 2°C (36°F) on May 13, 1994, marking the coldest May night on record.
Best Places in Australia in May
Find out more about the weather in Australia and which places have the best travel conditions in this month. See all of Australia in May →
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What to Wear in Adelaide in May
For Adelaide in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. With water temperatures around 21°C (70°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Adelaide in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Adelaide's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Adelaide climate overview or explore weather in Australia.
