Adelaide Hills weather in May

In May, Adelaide Hills sees average daytime highs of 17°C and overnight lows near 9°C, with 44 mm of rain across 8.4 wet days and about 10.2 hours of daylight. It is the 9th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 15°C by the end. The sky is clear or mostly clear about 26% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 36 min at the start of May to 9 h 48 min by month's end. Set against the rest of the year, May is Adelaide Hills's 11th-clearest and 10th-windiest month. For the whole year in context, see Adelaide Hills's year-round climate.

Daytime high
17°
9th warmest
Overnight low
5th coldest
Rainfall
44 mm
8.4 wet days
Daylight
10 h 12 min
8:06 AM – 6:17 PM
Cloud cover
59%
11th clearest
Wind
12 km/h
10th windiest
Solar energy
2.73 kWh/m²
Travel score
5.5
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 18°C in the first days to 15°C by the end.

A typical May day in Adelaide Hills reaches about 17°C in the afternoon and slips back to 9°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 21°C. Set against its neighbours, May runs about 4°C cooler than April and about 3°C warmer than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11810
21810
31810
41810
51810
6189
7189
8179
9179
10179
11179
12179
13179
14179
15179
16179
17179
18169
19169
20169
21169
22169
23168
24168
25168
26168
27158
28158
29158
30158
31158

Adelaide Hills weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 14°213.514.17.8
Feb27° / 15°182.813.38.0
Mar24° / 13°183.412.38.1
Apr21° / 11°335.311.17.2
May17° / 448.410.25.5
Jun14° / 519.39.74.1
Jul13° / 5610.49.93.7
Aug14° / 5610.810.74.2
Sep17° / 559.711.85.5
Oct20° / 366.812.96.8
Nov23° / 11°34613.87.5
Dec25° / 13°295.314.37.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 20% of May, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24753
34753
44654
54654
64555
74654
84654
94753
104753
114753
124852
134852
144852
154852
164852
174852
184753
194753
204753
214654
224654
234555
244555
254555
264357
274357
284456
294456
304555
314456

Chance of precipitation in May

Any precipitation

Adelaide Hills gets around 44 mm of rain over 8.4 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
126
226
326
426
526
626
725
825
925
1025
1125
1225
1325
1426
1526
1626
1727
1827
1928
2028
2128
2228
2328
2428
2528
2628
2728
2828
2929
3029
3129

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1964
2973
3973
4973
5973
6982
7982
8982
9982
10982
11982
12991
13991
14991
15991
16991
17991
18991
19991
20991
21991
22991
23991
24991
25991
26991
27991
28991
29991
30991
31991

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 36 min at the start of May to 9 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over May. Sunrise moves from 7:54 AM to 8:17 AM, and sunset from 6:31 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.67:546:31
210.67:556:30
310.67:566:29
410.57:566:28
510.57:576:27
610.57:586:26
710.47:596:25
810.48:006:24
910.48:016:23
1010.38:016:22
1110.38:026:21
1210.38:036:20
1310.38:046:19
1410.28:056:18
1510.28:056:17
1610.28:066:17
1710.18:076:16
1810.18:086:15
1910.18:086:14
2010.18:096:14
2110.18:106:13
2210.08:116:13
2310.08:116:12
2410.08:126:11
2510.08:136:11
269.98:146:10
279.98:146:10
289.98:156:09
299.98:166:09
309.98:166:08
319.88:176:08

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.73 kWh/m².

For context, solar energy here swings from a low near 2.21 kWh/m² to a high of 7.84 kWh/m² in January across the year — May's 2.73 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.2Moderate
23.2Moderate
33.1Moderate
43.1Moderate
53.1Moderate
63.0Moderate
73.0Moderate
83.0Moderate
92.9Moderate
102.9Moderate
112.9Moderate
122.9Moderate
132.8Moderate
142.8Moderate
152.8Moderate
162.7Moderate
172.7Moderate
182.7Moderate
192.6Moderate
202.6Moderate
212.6Moderate
222.6Moderate
232.5Moderate
242.5Moderate
252.5Moderate
262.5Moderate
272.4Moderate
282.4Moderate
292.4Moderate
302.4Moderate
312.4Moderate
Planning a trip in May

Hazard calendar for Adelaide Hills

In seasonPeak

None of Adelaide Hills's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Adelaide Hills sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Cyclone
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Adelaide Hills?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.5
Sightseeing
8th-best month of the year
1.2
Beach & pool
9th-best month of the year

May is a reasonable time to visit Adelaide Hills for sightseeing.

What to pack for Adelaide Hills in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Adelaide Hills sees daytime highs around 17°C and nights near 9°C. Worth packing: a warm layer and rain gear. About 8 days see rain.

a warm layerrain gear

Sea temperature near Adelaide Hills in May

The nearest coast averages about 17°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 31 km away) is warmest in February at about 22°C and coldest in August near 13°C.

It's comfortable for a long swim from Dec 22 to Apr 3 — about 3.4 months when the water holds above 20°C.

10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb22Refreshing
Mar21Refreshing
Apr19Cool
May17Cool
Jun15Cool
Jul14Bracing
Aug13Bracing
Sep14Bracing
Oct16Cool
Nov18Cool
Dec20Cool

UV index in Adelaide Hills in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Adelaide Hills peaks around January 10 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 10UV 13Jun 18UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar9Very high
Apr5High
May3Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov10Extreme
Dec13Extreme
Location & terrain

Where is Adelaide Hills?

Adelaide Hills sits at 34.9°S, 138.7°E, 426 m above sea level, in Australia. The nearest listed city is Adelaide city centre, 10 km away.

Whyalla

Topography around Adelaide Hills

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Adelaide Hills.

Within 3 km, the terrain around Adelaide Hills has significant variations in elevation — a maximum elevation change of 462 m around an average of 317 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 713 m; within 80 km, large variations in elevation — a maximum elevation change of 700 m.

The land around Adelaide Hills is covered by trees (77%) within 3 km, trees (49%), artificial surfaces (30%) and grassland (20%) within 16 km, and water (32%), grassland (29%) and cropland (24%) within 80 km.

3 km
462 m
16 km
713 m
80 km
700 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Adelaide city centre 10 km · Adelaide 10 km · Parafield Gardens 17 km · Paralowie 19 km · Mount Barker 23 km · Morphett Vale 30 km · Gawler 35 km · Whyalla 234 km

Australia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type I
230 V · 50 Hz
Prices
≈ 90% of US
price level, 2025
GDP per capita
$65,130
2025
Happiness
6.9 / 10
World Happiness, 2025
Homicide rate
0.9
per 100k, 2023
Road deaths
4.9
per 100k/yr, 2019
Income group
High
World Bank
Religion
none 38%Roman Catholic 20%Protestant 18%other Christian 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Adelaide Hills (-34.9112°, 138.7073°, elevation 426 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).