Byford weather in May

In May, Byford sees average daytime highs of 20°C and overnight lows near 11°C, with 66 mm of rain across 7.4 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 40% 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 Byford's 8th-clearest and 12th-windiest month. For the whole year in context, see Byford's year-round climate.

Daytime high
20°
8th warmest
Overnight low
11°
6th coldest
Rainfall
66 mm
7.4 wet days
Daylight
10 h 24 min
7:02 AM – 5:23 PM
Cloud cover
48%
8th clearest
Wind
12 km/h
12th windiest
Solar energy
3.12 kWh/m²
Travel score
7.0
out of 10

Byford is suburb of Perth, Western Australia.

Density
858/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 Byford reaches about 20°C in the afternoon and slips back to 11°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 24°C. Set against its neighbours, May runs about 4°C cooler than April and about 3°C warmer than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12212
22212
32212
42212
52212
62212
72212
82112
92112
102112
112111
122111
132111
142111
152011
162011
172011
182011
192011
202011
212011
222010
231910
241910
251910
261910
271910
281910
291910
301910
311910

Byford 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
Jan31° / 18°16213.96.0
Feb31° / 18°181.713.26.0
Mar28° / 17°182.612.27.2
Apr24° / 14°264.111.28.0
May20° / 11°667.410.47.0
Jun18° / 9510.19.95.8
Jul16° / 1021210.15.1
Aug17° / 9211.110.85.5
Sep18° / 659.211.86.3
Oct22° / 11°315.112.87.6
Nov25° / 13°244.513.78.1
Dec29° / 16°13214.17.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 21% of May, with mostly cloudy or overcast conditions the remaining 38%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16337
26238
36238
46238
56238
66139
76139
86139
96238
106337
116337
126337
136337
146337
156436
166436
176436
186436
196337
206337
216337
226139
236139
246139
256040
266040
275941
285842
295842
305842
315842

Chance of precipitation in May

Any precipitation

Byford gets around 66 mm of rain over 7.4 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 23% and peaks near 26% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
118
219
319
420
520
621
721
822
922
1022
1123
1223
1323
1424
1524
1624
1724
1824
1925
2025
2125
2225
2325
2426
2526
2626
2726
2826
2926
3026
3126

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 82% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
177194
277194
377194
477194
577194
677194
777194
878193
978193
1078193
1178193
1279183
1380182
1480182
1581172
1681172
1782162
1883161
1984151
2084151
2185141
2285141
2386131
2486131
2586131
2687121
2787121
2888111
2989110
3090100
3190100

Wind in May

Winds average 12 km/h in May, the calmest month.

Across May, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2913light breeze
3013light breeze
3113light 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 6:51 AM to 7:11 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)
110.76:515:36
210.76:515:35
310.76:525:34
410.76:535:33
510.66:545:32
610.66:545:31
710.66:555:30
810.66:565:29
910.56:575:28
1010.56:575:27
1110.56:585:27
1210.56:595:26
1310.46:595:25
1410.47:005:24
1510.47:015:24
1610.47:025:23
1710.37:025:22
1810.37:035:22
1910.37:045:21
2010.37:045:20
2110.27:055:20
2210.27:065:19
2310.27:065:19
2410.27:075:18
2510.27:085:18
2610.17:085:17
2710.17:095:17
2810.17:105:16
2910.17:105:16
3010.17:115:16
3110.17:115:15

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.12 kWh/m².

For context, solar energy here swings from a low near 2.5 kWh/m² to a high of 8.33 kWh/m² in December across the year — May's 3.12 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.6Moderate
43.5Moderate
53.5Moderate
63.5Moderate
73.4Moderate
83.4Moderate
93.4Moderate
103.3Moderate
113.3Moderate
123.2Moderate
133.2Moderate
143.2Moderate
153.1Moderate
163.1Moderate
173.1Moderate
183.0Moderate
193.0Moderate
203.0Moderate
213.0Moderate
222.9Moderate
232.9Moderate
242.9Moderate
252.9Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.7Moderate
Planning a trip in May

Hazard calendar for Byford

In seasonPeak

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

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

Byford'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 Byford?

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

7.0
Sightseeing
6th-best month of the year
3.9
Beach & pool
8th-best month of the year

May is one of the better times to visit Byford for general sightseeing.

What to pack for Byford in May

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

In May, Byford sees daytime highs around 20°C and nights near 11°C. Little to plan around — just the basics. About 7 days see rain.

Sea temperature near Byford 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 38 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 Byford 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 Byford peaks around December 23 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 highExtremeDec 23UV 13Jun 20UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar11Extreme
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug5Moderate
Sep8Very high
Oct9Very high
Nov10Extreme
Dec13Extreme

Air quality in Byford in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Byford is worst in May — around 18 µg/m³ PM2.5 (moderate), about 4.4× the cleanest month (December, 4 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodMay 1517 µg/m³Dec 185 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb7Good
Mar5Good
Apr10Good
May18Moderate
Jun8Good
Jul6Good
Aug7Good
Sep15Moderate
Oct15Moderate
Nov10Good
Dec4Good
Location & terrain

Where is Byford?

Byford sits at 32.2°S, 116.0°E, 64 m above sea level, in Australia. The nearest listed city is Gosnells, 16 km away.

Topography around Byford

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

Within 3 km, the terrain around Byford has significant variations in elevation — a maximum elevation change of 277 m around an average of 96 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 415 m; within 80 km, significant variations in elevation — a maximum elevation change of 568 m.

The land around Byford is covered by trees (54%), grassland (21%) and artificial surfaces (21%) within 3 km, trees (61%) and grassland (24%) within 16 km, and trees (45%) and water (27%) within 80 km.

3 km
277 m
16 km
415 m
80 km
568 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Gosnells 16 km · Thornlie 19 km · Canning Vale 20 km · Baldivis 21 km · Kwinana 21 km · Willetton 22 km · Rockingham 27 km · Perth 33 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 Byford (-32.221°, 116.009°, elevation 64 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).