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Australia weather

Weather in South Australia for May 2026

Your guide to South Australia weather in May - trends and predictions

    Temperatures

  • Until now, May 2026 in South Australia has been nearly identical to the historical average, with a temperature of 17.7 °C (showing only a slight deviation of 0.1 °C).

  • Expect cooler weather in the next days in South Australia with the forecast suggesting a temperature of 15.8 °C, lower than the historical average.

  • In general, the average temperature in South Australia at the beginning of May is 17.7 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 15.1 °C by the end of May.

    • Rain 🌧️

  • The climate of South Australia in May is notably wet, with an average of 11 rainy days, and a total of 46 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
20
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/10°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
65 %
Avg humidity

South Australia Weather May

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Partly cloudy
20°
2
Sunny
19°
3
Sunny
18°
4
Overcast
17°
5
Overcast
17°
6
Moderate rain at times
17°
7
Patchy rain possible
16°
8
Patchy rain possible
17°
9
Patchy rain possible
17°
10
Sunny
18°
11
Overcast
18°
12
Sunny
17°
13
Sunny
18°
14
Overcast
19°
15
Overcast
17°
16
Patchy rain possible
16°
17
Patchy rain possible
18°
18
Sunny
17°
19
Patchy rain possible
17°
20
Patchy rain possible
16°
21
Partly cloudy
16°
22
Overcast
15°
23
Partly cloudy
16°
24
Partly cloudy
15°
25
Sunny
14°
26
Cloudy
15°
27
Sunny
16°
28
Sunny
18°
29
Patchy rain possible
15°
30
Patchy rain possible
13°
31
Partly cloudy
15°

What’s the Weather Like in South Australia This May?

Discover the average temperatures and weather trends across South Australia’s cities this May.
Patchy rain possibleAdelaide17 °C / 10 °CSunnyAdelaide Hills17 °C / 8 °CSunnyGawler18 °C / 10 °CCloudyMount Gambier17 °C / 8 °CSunnyHappy Valley17 °C / 11 °CPatchy rain possiblePort Lincoln17 °C / 13 °CSunnyMount Barker17 °C / 10 °CSunnyPort Pirie19 °C / 11 °CSunnyVictor Harbor17 °C / 10 °CSunnyProspect17 °C / 12 °CSunnyMurray Bridge19 °C / 9 °CSunnyCeduna20 °C / 11 °CMore Locations

Temperatures trend during May in South Australia

See the weather trend as well as the moving average line

May weather in South Australia day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Partly cloudy
Partly cloudy
 20° /12° 0.5 mm 5
2 May Sunny
Sunny
 19° /11° 2.9 mm 5
3 May Sunny
Sunny
 18° /11° 3.4 mm 5
4 May Overcast
Overcast
 17° /11° 2.6 mm 5
5 May Overcast
Overcast
 17° /10° 3.1 mm 5
6 May Moderate rain at times
Moderate rain at times
 17° /10° 1.9 mm 4
7 May Patchy rain possible
Patchy rain possible
 16° /10° 0.5 mm 4
8 May Patchy rain possible
Patchy rain possible
 17° /10° 0.3 mm 5
9 May Patchy rain possible
Patchy rain possible
 17° /9° 0.3 mm 5
10 May Sunny
Sunny
 18° /10° 1.2 mm 5
11 May Overcast
Overcast
 18° /10° 0 mm 5
12 May Sunny
Sunny
 17° /10° 0.2 mm 5
13 May Sunny
Sunny
 18° /11° 0.3 mm 5
14 May Overcast
Overcast
 19° /12° 0.1 mm 4
15 May Overcast
Overcast
 17° /11° 1.5 mm 4
16 May Patchy rain possible
Patchy rain possible
 16° /10° 0.7 mm 5
17 May Patchy rain possible
Patchy rain possible
 18° /13° 1.3 mm 3.1
18 May Sunny
Sunny
 17° /12° 0 mm 3.1
19 May Patchy rain possible
Patchy rain possible
 17° /12° 1.2 mm 3.1
20 May Patchy rain possible
Patchy rain possible
 16° /12° 0.7 mm 2.8
21 May Partly cloudy
Partly cloudy
 16° /10° 0 mm 2.8
22 May Overcast
Overcast
 15° /9° 0 mm 4
23 May Partly cloudy
Partly cloudy
 16° /11° 0 mm 5
24 May Partly cloudy
Partly cloudy
 15° /9° 0 mm 5
25 May Sunny
Sunny
 14° /7° 0 mm 4
26 May Cloudy
Cloudy
 15° /8° 0 mm 4
27 May Sunny
Sunny
 16° /8° 0 mm 5
28 May Sunny
Sunny
 18° /10° 0 mm 5
29 May Patchy rain possible
Patchy rain possible
 15° /11° 3.8 mm 4
30 May Patchy rain possible
Patchy rain possible
 13° /11° 1.6 mm 4
31 May Partly cloudy
Partly cloudy
 15° /9° 2.2 mm 5
Next
Important Notice
Our weather forecast for South Australia in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the South Australia forecast closer to your planned date for the most up-to-date weather information.
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South Australia in May - FAQ

What are the expected maximum and minimum temperatures in South Australia during May?

Enjoy moderate daytime temperatures of up to 17° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in South Australia during May?

In May, South Australia can expect light to moderate rainfall, totaling 46 mm across approximately 11 days. Occasional showers are possible, and planning ahead for them could be helpful.

What are the typical wind conditions in South Australia during May?

The average wind speed in South Australia during May is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in South Australia

Explore the daily rainfall trends and prepare for South Australias May weather 💧
Typically, South Australia has 11 rainy days in May with a total of 46 mm of rainfall.
Counties in South Australia
Select a county for an accurate weather forecast
AdelaideAdelaide HillsCedunaGawlerMarionMount BarkerMount GambierMurray BridgePort LincolnPort Pirie City and DistsProspectVictor Harbor
Top locations in South Australia
Select a location for an accurate weather forecast
AdelaideAdelaide HillsGawlerHappy ValleyMount BarkerMount GambierPort LincolnPort PirieProspectVictor Harbor
More Locations

Quick links

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Location coordinates Where is South Australia?

Get accurate weather forecasts for South Australia, located at latitude -34.929 and longitude 138.599. Stay updated with localized weather information tailored for South Australia.

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