Mooroolbark weather in September

In September, Mooroolbark sees average daytime highs of 16°C and overnight lows near 7°C, with 82 mm of rain across 13.4 wet days and about 11.7 hours of daylight. It is the 8th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 17°C by the end. The sky is clear or mostly clear about 19% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 06 min at the start of September to 12 h 18 min by month's end. Set against the rest of the year, September is Mooroolbark's 9th-clearest and 2nd-windiest month. For the whole year in context, see Mooroolbark's year-round climate.

Daytime high
16°
8th warmest
Overnight low
4th coldest
Rainfall
82 mm
13.4 wet days
Daylight
11 h 48 min
7:20 AM – 7:06 PM
Cloud cover
64%
9th clearest
Wind
13 km/h
2nd windiest
Solar energy
3.89 kWh/m²
Travel score
4.5
out of 10

Mooroolbark is suburb of Melbourne, Victoria, Australia.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 15°C in the first days to 17°C by the end.

A typical September day in Mooroolbark reaches about 16°C in the afternoon and slips back to 7°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 20°C. Set against its neighbours, September runs about 2°C warmer than August and about 3°C cooler than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
1156
2156
3156
4156
5157
6157
7157
8157
9157
10157
11157
12157
13167
14167
15167
16167
17167
18167
19167
20167
21167
22167
23167
24167
25177
26177
27177
28177
29178
30178

Mooroolbark weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 13°587.314.37.4
Feb25° / 14°526.213.57.5
Mar23° / 12°457.112.37.4
Apr19° / 10°598.211.16.3
May16° / 6010.4104.7
Jun13° / 6511.69.43.4
Jul12° / 6312.99.73.0
Aug13° / 7713.810.53.5
Sep16° / 8213.411.74.5
Oct18° / 7912.1135.6
Nov21° / 10°7810.3146.3
Dec23° / 12°748.814.67.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14159
24159
34258
44159
54060
64060
73961
83961
93961
103961
113763
123763
133664
143664
153664
163664
173763
183763
193664
203664
213664
223664
233664
243664
253763
263862
273862
283862
293862
303961

Chance of precipitation in September

Any precipitation

Mooroolbark gets around 82 mm of rain over 13.4 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 44% and peaks near 45% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
142
242
343
444
544
645
745
845
945
1045
1145
1245
1345
1445
1545
1645
1744
1844
1944
2044
2144
2243
2343
2443
2542
2642
2742
2841
2941
3041

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
17991
18991
19991
20991
21991
22991
23991
24991
25991
26991
27991
28991
29991
30991

Wind in September

Winds average 13 km/h in September.

Across September, 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.

051015151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3012light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 06 min at the start of September to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over September. Sunrise moves from 7:44 AM to 6:58 AM, and sunset from 6:53 PM to 7:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.17:446:53
211.27:436:54
311.27:416:55
411.37:396:55
511.37:386:56
611.37:366:57
711.47:356:58
811.47:336:59
911.57:327:00
1011.57:307:01
1111.67:287:02
1211.67:277:02
1311.67:257:03
1411.77:237:04
1511.77:227:05
1611.87:207:06
1711.87:197:07
1811.87:177:08
1911.97:157:09
2011.97:147:09
2112.07:127:10
2212.07:117:11
2312.17:097:12
2412.17:077:13
2512.17:067:14
2612.27:047:15
2712.27:027:16
2812.37:017:17
2912.36:597:17
3012.36:587:18

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.89 kWh/m².

For context, solar energy here swings from a low near 1.76 kWh/m² to a high of 7.2 kWh/m² in January across the year — September's 3.89 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
13.4Moderate
23.4Moderate
33.4Moderate
43.5Moderate
53.5Moderate
63.5Moderate
73.6Moderate
83.6Moderate
93.6Moderate
103.6Moderate
113.7Moderate
123.7Moderate
133.8Moderate
143.8Moderate
153.8Moderate
163.9Moderate
173.9Moderate
184.0Moderate
194.0Bright
204.0Bright
214.1Bright
224.2Bright
234.2Bright
244.3Bright
254.3Bright
264.4Bright
274.4Bright
284.5Bright
294.5Bright
304.6Bright
Planning a trip in September

Hazard calendar for Mooroolbark

In seasonPeak

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

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

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

Is September a good time to visit Mooroolbark?

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

4.5
Sightseeing
9th-best month of the year
0.5
Beach & pool
8th-best month of the year

September is a reasonable time to visit Mooroolbark for sightseeing.

What to pack for Mooroolbark in September

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

In September, Mooroolbark sees daytime highs around 16°C and nights near 7°C. Worth packing: a warm layer and rain gear. About 13 days see rain.

a warm layerrain gear

Sea temperature near Mooroolbark in September

The nearest coast averages about 12°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 40 km away) is warmest in February at about 21°C and coldest in August near 11°C.

It's comfortable for a long swim from Jan 15 to Mar 11 — about 1.8 months when the water holds above 20°C.

10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan20Refreshing
Feb21Refreshing
Mar20Cool
Apr18Cool
May15Cool
Jun13Bracing
Jul12Bracing
Aug11Bracing
Sep12Bracing
Oct14Bracing
Nov17Cool
Dec19Cool

UV index in Mooroolbark in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mooroolbark peaks around December 19 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateModerateVery highExtremeDec 19UV 12Jun 17UV 2
UV index (midday)Level
Jan11Extreme
Feb10Extreme
Mar8Very high
Apr5Moderate
May3Moderate
Jun2Low
Jul2Moderate
Aug3Moderate
Sep5Moderate
Oct8Very high
Nov10Very high
Dec12Extreme

Air quality in Mooroolbark 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 Mooroolbark is worst in April — around 24 µg/m³ PM2.5 (moderate), about 4.8× the cleanest month (July, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1223 µg/m³Jul 155 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb6Good
Mar18Moderate
Apr24Moderate
May8Good
Jun5Good
Jul5Good
Aug6Good
Sep7Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Mooroolbark?

Mooroolbark sits at 37.8°S, 145.3°E, 125 m above sea level, in Australia. The nearest listed city is Croydon, 4.0 km away.

Topography around Mooroolbark

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

Within 3 km, the terrain around Mooroolbark has only modest variations in elevation — a maximum elevation change of 188 m around an average of 126 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 623 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,509 m.

The land around Mooroolbark is covered by trees (62%) and artificial surfaces (26%) within 3 km, trees (62%) and grassland (24%) within 16 km, and trees (42%) and grassland (34%) within 80 km.

3 km
188 m
16 km
623 m
80 km
1,509 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Croydon 4.0 km · Lilydale 5.0 km · Ringwood 8.0 km · Boronia 10 km · Mitcham 11 km · Ferntree Gully 12 km · Wantirna South 14 km · Doncaster East 15 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 Mooroolbark (-37.7825°, 145.3168°, elevation 125 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).