Busselton weather in May

In May, Busselton sees average daytime highs of 19°C and overnight lows near 13°C, with 82 mm of rain across 9.1 wet days and about 10.3 hours of daylight. It is the 7th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 18°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 42 min at the start of May to 10 hours by month's end. Set against the rest of the year, May is Busselton's 8th-clearest and 11th-windiest month. For the whole year in context, see Busselton's year-round climate.

Daytime high
19°
7th warmest
Overnight low
13°
6th coldest
Rainfall
82 mm
9.1 wet days
Daylight
10 h 18 min
7:07 AM – 5:23 PM
Cloud cover
57%
8th clearest
Wind
16 km/h
11th windiest
Solar energy
2.72 kWh/m²
Travel score
6.2
out of 10

Busselton is city in the South West region of Western Australia.

Air quality
Good
PM2.5 8.1 µg/m³ · 2016
Founded
1832

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 20°C in the first days to 18°C by the end.

A typical May day in Busselton reaches about 19°C in the afternoon and slips back to 13°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 21°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)
12014
22014
32013
42013
52013
62013
71913
81913
91913
101913
111913
121913
131913
141913
151913
161913
171913
181913
191813
201813
211813
221813
231813
241812
251812
261812
271812
281812
291812
301812
311812

Busselton weather by month

How May compares with the rest of the year at a glance. May is the 7th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 16°111.4148.7
Feb26° / 17°101.413.38.6
Mar24° / 16°222.912.38.3
Apr21° / 15°294.511.27.5
May19° / 13°829.110.36.2
Jun17° / 12°11312.39.85.0
Jul16° / 11°12514.3104.5
Aug16° / 11°9712.510.84.7
Sep16° / 11°6610.511.85.1
Oct19° / 12°335.812.86.6
Nov21° / 13°274.613.77.5
Dec24° / 15°112.214.28.5

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 26% of May, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25347
35347
45347
55347
65347
75347
85347
95347
105347
115347
125347
135347
145347
155347
165347
175248
185248
195248
205149
215149
225050
235050
244951
255050
265050
275050
285149
295149
305149
315248

Chance of precipitation in May

Any precipitation

Busselton gets around 82 mm of rain over 9.1 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 29% and peaks near 34% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
120
221
321
422
523
624
724
825
926
1027
1128
1228
1329
1430
1530
1631
1731
1831
1931
2032
2132
2233
2333
2433
2534
2634
2734
2834
2934
3034
3134

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 77% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
170255
271245
371245
471245
571245
671245
771245
871245
972235
1072235
1172235
1273225
1375214
1475214
1576204
1677194
1778193
1879183
1979183
2080173
2181172
2282162
2382162
2483152
2583152
2684151
2785141
2885141
2986131
3086131
3186131

Wind in May

Winds average 16 km/h in May.

Across May, daily wind ranges from about 15 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light 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
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light 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 6:55 AM to 7:17 AM, and sunset from 5:36 PM to 5:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.76:555:36
210.66:565:35
310.66:575:34
410.66:585:33
510.66:595:32
610.56:595:31
710.57:005:30
810.57:015:29
910.47:025:28
1010.47:025:28
1110.47:035:27
1210.47:045:26
1310.37:055:25
1410.37:065:24
1510.37:065:23
1610.37:075:23
1710.27:085:22
1810.27:095:21
1910.27:095:21
2010.27:105:20
2110.17:115:19
2210.17:115:19
2310.17:125:18
2410.17:135:18
2510.17:145:17
2610.07:145:17
2710.07:155:16
2810.07:165:16
2910.07:165:15
3010.07:175:15
3110.07:175:15

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.72 kWh/m².

For context, solar energy here swings from a low near 2.19 kWh/m² to a high of 8.03 kWh/m² in January across the year — May's 2.72 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.2Moderate
23.1Moderate
33.1Moderate
43.1Moderate
53.0Moderate
63.0Moderate
73.0Moderate
83.0Moderate
92.9Moderate
102.9Moderate
112.9Moderate
122.8Moderate
132.8Moderate
142.8Moderate
152.7Moderate
162.7Moderate
172.7Moderate
182.6Moderate
192.6Moderate
202.6Moderate
212.6Moderate
222.5Moderate
232.5Moderate
242.5Moderate
252.5Moderate
262.5Moderate
272.5Moderate
282.4Moderate
292.4Moderate
302.4Moderate
312.4Moderate
Planning a trip in May

Hazard calendar for Busselton

In seasonPeak

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

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

Busselton'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 Busselton?

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

6.2
Sightseeing
8th-best month of the year
2.5
Beach & pool
8th-best month of the year

May is a reasonable time to visit Busselton for sightseeing.

What to pack for Busselton in May

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

In May, Busselton sees daytime highs around 19°C and nights near 13°C. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near Busselton 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 March at about 21°C and coldest in September near 17°C.

It's comfortable for a long swim from Dec 14 to May 18 — about 5.1 months when the water holds above 20°C.

16°18°20°22°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb21Refreshing
Mar21Refreshing
Apr21Refreshing
May20Refreshing
Jun19Cool
Jul18Cool
Aug17Cool
Sep17Cool
Oct18Cool
Nov19Cool
Dec20Refreshing

UV index in Busselton 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 Busselton peaks around January 12 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 — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateVery highExtremeJan 12UV 13Jun 20UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Extreme
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep7Very high
Oct8Very high
Nov10Very high
Dec12Extreme
Location & terrain

Where is Busselton?

Busselton sits at 33.7°S, 115.3°E, 7 m above sea level, in Australia. The nearest listed city is Margaret River, 42 km away.

Topography around Busselton

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

Within 3 km, the terrain around Busselton has only modest variations in elevation — a maximum elevation change of 16 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 165 m; within 80 km, significant variations in elevation — a maximum elevation change of 376 m.

The land around Busselton is covered by water (37%), grassland (27%) and artificial surfaces (22%) within 3 km, water (41%) and grassland (36%) within 16 km, and trees (43%) and water (39%) within 80 km.

3 km
16 m
16 km
165 m
80 km
376 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Margaret River 42 km · Bunbury 45 km · Australind 54 km · Mandurah 130 km · Baldivis 154 km · Rockingham 157 km · Kwinana 163 km · Byford 171 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 Busselton (-33.6525°, 115.3455°, 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).