Kwinana weather in May

In May, Kwinana sees average daytime highs of 21°C and overnight lows near 14°C, with 71 mm of rain across 8 wet days and about 10.4 hours of daylight. It is the 8th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 19°C by the end. The sky is clear or mostly clear about 42% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 42 min at the start of May to 10 h 06 min by month's end. Set against the rest of the year, May is Kwinana's 8th-clearest and 11th-windiest month. For the whole year in context, see Kwinana's year-round climate.

Daytime high
21°
8th warmest
Overnight low
14°
6th coldest
Rainfall
71 mm
8 wet days
Daylight
10 h 24 min
7:02 AM – 5:24 PM
Cloud cover
47%
8th clearest
Wind
16 km/h
11th windiest
Solar energy
3.17 kWh/m²
Travel score
6.9
out of 10

Kwinana is suburb of Perth, Western Australia.

Density
2,174/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 22°C in the first days to 19°C by the end.

A typical May day in Kwinana reaches about 21°C in the afternoon and slips back to 14°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 24°C. Set against its neighbours, May runs about 3°C cooler than April and about 2°C warmer than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12215
22215
32215
42215
52214
62214
72214
82114
92114
102114
112114
122114
132114
142114
152114
162114
172013
182013
192013
202013
212013
222013
232013
242013
252013
262013
271913
281913
291913
301913
311913

Kwinana weather by month

How May compares with the rest of the year at a glance. May is the 8th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 19°151.513.97.9
Feb29° / 19°171.613.27.4
Mar27° / 18°172.312.28.0
Apr24° / 16°254.211.28.1
May21° / 14°71810.46.9
Jun18° / 12°10610.99.95.9
Jul17° / 11°10712.810.15.3
Aug17° / 11°9411.510.85.6
Sep18° / 12°608.711.86.3
Oct21° / 13°284.812.87.5
Nov24° / 15°21413.78.3
Dec26° / 17°111.714.18.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 23% of May, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26436
36436
46436
56535
66436
76436
86436
96436
106436
116535
126535
136535
146634
156733
166733
176733
186733
196733
206733
216634
226535
236535
246436
256436
266436
276436
286436
296436
306436
316436

Chance of precipitation in May

Any precipitation

Kwinana gets around 71 mm of rain over 8 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 26% and peaks near 29% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
119
220
320
421
522
622
723
823
924
1025
1125
1226
1326
1427
1527
1627
1727
1827
1927
2027
2128
2228
2328
2428
2528
2628
2728
2828
2928
3028
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 72% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
162308
262308
363298
463298
564288
665287
765287
866277
966277
1067276
1167276
1269265
1369265
1471254
1571254
1671254
1773243
1873243
1974233
2076222
2176222
2277212
2378202
2478202
2579192
2679192
2780182
2880182
2981172
3082171
3183161

Wind in May

Winds average 16 km/h in May.

Across May, daily wind ranges from about 16 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 42 min at the start of May to 10 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over May. Sunrise moves from 6:52 AM to 7:12 AM, and sunset from 5:37 PM to 5:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.76:525:37
210.76:525:36
310.76:535:35
410.76:545:34
510.66:555:33
610.66:555:32
710.66:565:31
810.66:575:30
910.56:575:29
1010.56:585:28
1110.56:595:27
1210.57:005:27
1310.47:005:26
1410.47:015:25
1510.47:025:24
1610.47:025:24
1710.37:035:23
1810.37:045:22
1910.37:055:22
2010.37:055:21
2110.27:065:21
2210.27:075:20
2310.27:075:20
2410.27:085:19
2510.27:095:19
2610.17:095:18
2710.17:105:18
2810.17:115:17
2910.17:115:17
3010.17:125:16
3110.17:125:16

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.17 kWh/m².

For context, solar energy here swings from a low near 2.53 kWh/m² to a high of 8.4 kWh/m² in December across the year — May's 3.17 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.7Moderate
23.7Moderate
33.6Moderate
43.6Moderate
53.5Moderate
63.5Moderate
73.5Moderate
83.4Moderate
93.4Moderate
103.4Moderate
113.3Moderate
123.3Moderate
133.3Moderate
143.2Moderate
153.2Moderate
163.1Moderate
173.1Moderate
183.1Moderate
193.1Moderate
203.0Moderate
213.0Moderate
223.0Moderate
233.0Moderate
242.9Moderate
252.9Moderate
262.9Moderate
272.9Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in May

Hazard calendar for Kwinana

In seasonPeak

In May, Kwinana sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

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

Kwinana's rainy season runs May–September, when most of the year's rain falls.

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

Is May a good time to visit Kwinana?

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

6.9
Sightseeing
8th-best month of the year
4.0
Beach & pool
8th-best month of the year

May is a reasonable time to visit Kwinana for sightseeing.

What to pack for Kwinana in May

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

In May, Kwinana sees daytime highs around 21°C and nights near 14°C. Worth packing: rain gear. About 8 days see rain.

rain gear

Sea temperature near Kwinana in May

The nearest coast averages about 22°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 19 km away) is warmest in February at about 22°C and coldest in September near 19°C.

It's comfortable for a long swim from Nov 26 to Jul 9 — about 7.4 months when the water holds above 20°C.

18°20°22°24°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb22Refreshing
Mar22Refreshing
Apr22Refreshing
May22Refreshing
Jun21Refreshing
Jul20Cool
Aug19Cool
Sep19Cool
Oct19Cool
Nov20Cool
Dec21Refreshing

UV index in Kwinana in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kwinana peaks around January 1 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateVery highExtremeJan 1UV 13Jun 20UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar10Extreme
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug5Moderate
Sep8Very high
Oct9Very high
Nov10Very high
Dec13Extreme
Location & terrain

Where is Kwinana?

Kwinana sits at 32.2°S, 115.8°E, 7 m above sea level, in Australia. The nearest listed city is Rockingham, 7.0 km away.

Topography around Kwinana

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

Within 3 km, the terrain around Kwinana has only modest variations in elevation — a maximum elevation change of 61 m around an average of 11 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 80 m; within 80 km, significant variations in elevation — a maximum elevation change of 565 m.

The land around Kwinana is covered by artificial surfaces (29%), trees (26%) and grassland (25%) within 3 km, water (38%) and trees (22%) within 16 km, and trees (43%) and water (36%) within 80 km.

3 km
61 m
16 km
80 m
80 km
565 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Rockingham 7.0 km · Baldivis 12 km · Byford 21 km · Willetton 22 km · Canning Vale 23 km · Thornlie 25 km · Gosnells 27 km · Perth 32 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 Kwinana (-32.2301°, 115.7813°, elevation 7 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).