Broome weather in September

In September, Broome sees average daytime highs of 31°C and overnight lows near 21°C, with 0 mm of rain across 0.1 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 82% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Broome's 4th-clearest and 8th-windiest month. For the whole year in context, see Broome's year-round climate.

Daytime high
31°
9th warmest
Overnight low
21°
4th coldest
Rainfall
0 mm
0.1 wet days
Daylight
11 h 54 min
5:48 AM – 5:42 PM
Cloud cover
18%
4th clearest
Wind
15 km/h
8th windiest
Solar energy
6.7 kWh/m²
Travel score
6.0
out of 10

Broome is town in Kimberley region of Western Australia.

Founded
1883

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical September day in Broome reaches about 31°C in the afternoon and slips back to 21°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 34°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°C cooler than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13020
23020
33020
43020
53020
63120
73120
83120
93120
103121
113121
123121
133121
143121
153121
163121
173121
183121
193122
203122
213222
223222
233222
243222
253222
263222
273222
283222
293223
303223

How September really feels in Broome

Once humidity and wind are folded in, September averages 1 day that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
1
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Broome weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 27°16610.8133.8
Feb32° / 27°14411.912.63.7
Mar33° / 27°839.112.13.5
Apr34° / 25°182.411.63.9
May31° / 22°181.511.25.6
Jun29° / 19°120.610.97.3
Jul28° / 18°70.8117.8
Aug29° / 18°30.311.47.2
Sep31° / 21°00.111.96.0
Oct33° / 24°30.912.44.9
Nov33° / 26°82.112.84.3
Dec33° / 27°967.413.13.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 82% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 9% of September, with mostly cloudy or overcast conditions the remaining 9%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1946
2937
3937
4937
5937
6928
7928
8928
9928
10928
119010
129010
139010
149010
158911
168911
178812
188812
198812
209010
219010
229010
239010
249010
259010
269010
27919
28928
29928
30928

Chance of precipitation in September

Any precipitation

Broome gets around 0 mm of rain over 0.1 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 0% and peaks near 1% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
41
51
61
71
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
301

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 32% of days. Sticky, muggy-or-worse air turns up on roughly 28% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1441826120
2421826130
3411827140
4401828140
5391828150
6391828150
7381729160
8371729170
9371629181
10361629181
11361628191
12361528201
13351528211
14351527221
15341427231
16341427241
17331426261
18321326271
19311326292
20301326302
21281325322
22271225333
23261225353
24241225364
25231124374
26221124395
27201123406
28191023417
29181023428
30161022439

Wind in September

Winds average 15 km/h in September.

Across September, 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.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 36 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over September. Sunrise moves from 6:01 AM to 5:36 AM, and sunset from 5:40 PM to 5:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:015:40
211.76:015:40
311.76:005:40
411.75:595:41
511.75:585:41
611.75:575:41
711.75:565:41
811.85:555:41
911.85:555:41
1011.85:545:41
1111.85:535:42
1211.85:525:42
1311.85:515:42
1411.95:505:42
1511.95:495:42
1611.95:485:42
1711.95:475:43
1811.95:475:43
1912.05:465:43
2012.05:455:43
2112.05:445:43
2212.05:435:43
2312.05:425:43
2412.05:415:44
2512.15:405:44
2612.15:395:44
2712.15:395:44
2812.15:385:44
2912.15:375:44
3012.15:365:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.7 kWh/m².

For context, solar energy here swings from a low near 4.63 kWh/m² to a high of 7.61 kWh/m² in November across the year — September's 6.7 kWh/m² falls in the middle.

02468151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.4Intense
66.4Intense
76.4Intense
86.5Intense
96.5Intense
106.5Intense
116.6Intense
126.6Intense
136.6Intense
146.7Intense
156.7Intense
166.7Intense
176.7Intense
186.8Intense
196.8Intense
206.8Intense
216.8Intense
226.9Intense
236.9Intense
246.9Intense
256.9Intense
267.0Intense
277.0Intense
287.0Intense
297.0Intense
307.0Intense
Planning a trip in September

Hazard calendar for Broome

In seasonPeak

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

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

Broome's rainy season runs December–March, when most of the year's rain falls.

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

Is September a good time to visit Broome?

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

6.0
Sightseeing
4th-best month of the year
8.8
Beach & pool
4th-best month of the year

September is a reasonable time to visit Broome for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Broome in September

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

In September, Broome sees daytime highs around 31°C and nights near 21°C. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Broome in September

The nearest coast averages about 25°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 km away) is warmest in March at about 30°C and coldest in August near 24°C.

The water stays above 20°C all year — warm enough for a swim any month.

22°24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan30Tropical
Feb30Tropical
Mar30Tropical
Apr30Tropical
May28Warm
Jun25Warm
Jul24Warm
Aug24Refreshing
Sep25Warm
Oct28Warm
Nov29Tropical
Dec30Tropical

UV index in Broome in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Broome peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeJan 24UV 15Jun 17UV 8
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr10Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep11Extreme
Oct13Extreme
Nov14Extreme
Dec15Extreme

Air quality in Broome in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Broome is worst in May — around 15 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (March, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodMay 1815 µg/m³Mar 166 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb9Good
Mar6Good
Apr9Good
May15Moderate
Jun11Good
Jul11Good
Aug11Good
Sep8Good
Oct12Good
Nov13Moderate
Dec9Good
Location & terrain

Where is Broome?

Broome sits at 18.0°S, 122.2°E, 0 m above sea level, in Australia. The nearest listed city is Port Hedland, 463 km away.

Port HedlandKarrathaKupangSoeWaingapuKefamenanuTambolakaSuai

Topography around Broome

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

Within 3 km, the terrain around Broome has only modest variations in elevation — a maximum elevation change of 24 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 60 m; within 80 km, only modest variations in elevation — a maximum elevation change of 247 m.

The land around Broome is covered by water (28%), artificial surfaces (21%) and mangroves (20%) within 3 km, water (63%) within 16 km, and water (32%), shrubs (27%) and grassland (23%) within 80 km.

3 km
24 m
16 km
60 m
80 km
247 m
treesshrubsgrasslandartificial surfacesbare terrainwatermangroves
September weather nearby: Port Hedland 463 km · Karratha 645 km · Kupang 878 km · Soe 927 km · Waingapu 947 km · Kefamenanu 976 km · Tambolaka 1,002 km · Suai 1,015 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 Broome (-17.9554°, 122.2392°, elevation 0 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).