Bunbury weather in May

In May, Bunbury sees average daytime highs of 19°C and overnight lows near 12°C, with 87 mm of rain across 8.4 wet days and about 10.3 hours of daylight. It is the 8th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 18°C by the end. The sky is clear or mostly clear about 33% 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 hours by month's end. Set against the rest of the year, May is Bunbury's 8th-clearest and 11th-windiest month. For the whole year in context, see Bunbury's year-round climate.

Daytime high
19°
8th warmest
Overnight low
12°
6th coldest
Rainfall
87 mm
8.4 wet days
Daylight
10 h 18 min
7:05 AM – 5:22 PM
Cloud cover
52%
8th clearest
Wind
14 km/h
11th windiest
Solar energy
2.91 kWh/m²
Travel score
6.5
out of 10

Bunbury is city and metropolitan area in Western Australia.

Air quality
Good
PM2.5 8.4 µg/m³ · 2016
Density
551/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 21°C in the first days to 18°C by the end.

A typical May day in Bunbury reaches about 19°C in the afternoon and slips back to 12°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 22°C. Set against its neighbours, May runs about 3°C cooler than April and about 2°C warmer than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12113
22113
32113
42113
52013
62013
72012
82012
92012
102012
112012
122012
132012
141912
151912
161912
171912
181912
191912
201912
211911
221911
231911
241911
251811
261811
271811
281811
291811
301811
311811

Bunbury 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° / 17°111.9148.2
Feb28° / 17°131.613.28.1
Mar26° / 16°223.112.38.2
Apr23° / 14°304.911.27.8
May19° / 12°878.410.36.5
Jun17° / 11°11711.69.85.3
Jul16° / 10°12713.7104.7
Aug16° / 10°10612.310.84.9
Sep17° / 10°749.911.85.6
Oct20° / 11°345.512.87.0
Nov23° / 13°294.913.77.9
Dec26° / 15°111.914.28.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 26% of May, with mostly cloudy or overcast conditions the remaining 41%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
26040
36040
46040
56040
65941
75941
85941
95941
105941
115941
125941
135941
146040
155941
165941
175941
186040
196040
206040
215941
225842
235842
245842
255842
265842
275842
285842
295743
305743
315743

Chance of precipitation in May

Any precipitation

Bunbury gets around 87 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 31% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
120
220
321
422
522
623
724
825
925
1026
1127
1227
1328
1428
1529
1629
1729
1829
1929
2029
2130
2230
2330
2430
2530
2630
2730
2830
2930
3030
3131

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 80% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
175205
275205
375205
475205
575205
675205
775205
874215
974215
1075214
1175214
1276204
1376204
1477203
1578193
1678193
1780182
1881172
1981172
2082162
2183161
2284151
2384151
2485141
2586131
2686131
2787121
2887121
2988120
3089110
3189110

Wind in May

Winds average 14 km/h in May.

Across May, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3015light breeze
3115light breeze

Sunrise & sunset in May

DaylightNight

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

Days shrink by about 42 minutes over May. Sunrise moves from 6:54 AM to 7:16 AM, and sunset from 5:35 PM to 5:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.76:545:35
210.76:555:34
310.66:555:33
410.66:565:32
510.66:575:31
610.56:585:31
710.56:585:30
810.56:595:29
910.57:005:28
1010.47:015:27
1110.47:015:26
1210.47:025:25
1310.47:035:24
1410.37:045:24
1510.37:045:23
1610.37:055:22
1710.37:065:21
1810.27:075:21
1910.27:075:20
2010.27:085:19
2110.27:095:19
2210.17:105:18
2310.17:105:18
2410.17:115:17
2510.17:125:17
2610.17:125:16
2710.07:135:16
2810.07:145:15
2910.07:145:15
3010.07:155:14
3110.07:165:14

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.91 kWh/m².

For context, solar energy here swings from a low near 2.34 kWh/m² to a high of 8.26 kWh/m² in January across the year — May's 2.91 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.4Moderate
33.3Moderate
43.3Moderate
53.3Moderate
63.2Moderate
73.2Moderate
83.2Moderate
93.1Moderate
103.1Moderate
113.0Moderate
123.0Moderate
133.0Moderate
143.0Moderate
152.9Moderate
162.9Moderate
172.9Moderate
182.8Moderate
192.8Moderate
202.8Moderate
212.8Moderate
222.7Moderate
232.7Moderate
242.7Moderate
252.7Moderate
262.7Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.6Moderate
312.6Moderate
Planning a trip in May

Hazard calendar for Bunbury

In seasonPeak

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

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

Bunbury'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 Bunbury?

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

6.5
Sightseeing
8th-best month of the year
3.0
Beach & pool
8th-best month of the year

May is a reasonable time to visit Bunbury for sightseeing.

What to pack for Bunbury in May

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

In May, Bunbury sees daytime highs around 19°C and nights near 12°C. Worth packing: rain gear. About 8 days see rain.

rain gear

Sea temperature near Bunbury in May

The nearest coast averages about 20°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in February at about 22°C and coldest in September near 17°C.

It's comfortable for a long swim from Dec 8 to May 9 — about 5 months when the water holds above 20°C.

16°18°20°22°24°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb22Refreshing
Mar22Refreshing
Apr21Refreshing
May20Cool
Jun19Cool
Jul18Cool
Aug17Cool
Sep17Cool
Oct17Cool
Nov19Cool
Dec20Refreshing

UV index in Bunbury 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 Bunbury peaks around January 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateVery highExtremeJan 11UV 13Jun 21UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Extreme
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep8Very high
Oct8Very high
Nov10Very high
Dec13Extreme
Location & terrain

Where is Bunbury?

Bunbury sits at 33.3°S, 115.6°E, 5 m above sea level, in Australia. The nearest listed city is Australind, 9.0 km away.

Topography around Bunbury

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

Within 3 km, the terrain around Bunbury has only modest variations in elevation — a maximum elevation change of 45 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 67 m; within 80 km, significant variations in elevation — a maximum elevation change of 482 m.

The land around Bunbury is covered by water (48%) and artificial surfaces (34%) within 3 km, water (53%) and grassland (21%) within 16 km, and trees (48%) and water (30%) within 80 km.

3 km
45 m
16 km
67 m
80 km
482 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Australind 9.0 km · Busselton 45 km · Margaret River 87 km · Mandurah 89 km · Baldivis 112 km · Rockingham 117 km · Kwinana 123 km · Byford 128 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 Bunbury (-33.3271°, 115.6414°, elevation 5 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).