Warrnambool weather in September

In September, Warrnambool sees average daytime highs of 15°C and overnight lows near 10°C, with 88 mm of rain across 14.3 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 15°C through the month. The sky is clear or mostly clear about 13% 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 24 min by month's end. Set against the rest of the year, September is Warrnambool's 9th-clearest and 3rd-windiest month. For the whole year in context, see Warrnambool's year-round climate.

Daytime high: 15°; 9th warmest
Overnight low: 10°; 3rd coldest
Rainfall: 88 mm; 14.3 wet days
Daylight: 11 h 48 min; 7:32 AM – 7:17 PM
Cloud cover: 67%; 9th clearest
Wind: 21 km/h; 3rd windiest
Solar energy: 3.77 kWh/m²
Travel score: 3.9; out of 10

Warrnambool is city in Victoria, Australia.

Founded: 1855

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

← August Warrnambool year-round climate October →Best places to visit in September

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 15°C through the month.

A typical September day in Warrnambool reaches about 15°C in the afternoon and slips back to 10°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 18°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	14	14	14	14	14	14	14	14	14	14	14	14	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15
Avg low (°C)	9	9	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10

	Avg high (°C)	Avg low (°C)
1	14	9
2	14	9
3	14	10
4	14	10
5	14	10
6	14	10
7	14	10
8	14	10
9	14	10
10	14	10
11	14	10
12	14	10
13	15	10
14	15	10
15	15	10
16	15	10
17	15	10
18	15	10
19	15	10
20	15	10
21	15	10
22	15	10
23	15	10
24	15	10
25	15	10
26	15	10
27	15	10
28	15	10
29	15	10
30	15	10

Warrnambool weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	21° / 14°	46	5.9	14.4	7.2
Feb	21° / 15°	31	4.8	13.5	7.2
Mar	20° / 14°	40	6.8	12.3	6.7
Apr	18° / 13°	54	8.9	11	5.7
May	15° / 11°	74	11.6	9.9	4.5
Jun	14° / 10°	86	12.8	9.4	3.5
Jul	13° / 9°	99	14.4	9.6	3.2
Aug	13° / 9°	113	15.4	10.5	3.3
Sep	15° / 10°	88	14.3	11.7	3.9
Oct	16° / 10°	65	10.9	13	4.8
Nov	18° / 12°	61	9.1	14.1	5.7
Dec	19° / 13°	52	8.2	14.6	6.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 23% of September, with mostly cloudy or overcast conditions the remaining 64%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	39	39	39	38	38	38	38	38	37	37	37	36	36	35	35	35	34	34	34	34	34	34	34	34	34	35	35	35	35	36
Cloudier (%)	61	61	61	62	62	62	62	62	63	63	63	64	64	65	65	65	66	66	66	66	66	66	66	66	66	65	65	65	65	64

	Clearer (%)	Cloudier (%)
1	39	61
2	39	61
3	39	61
4	38	62
5	38	62
6	38	62
7	38	62
8	38	62
9	37	63
10	37	63
11	37	63
12	36	64
13	36	64
14	35	65
15	35	65
16	35	65
17	34	66
18	34	66
19	34	66
20	34	66
21	34	66
22	34	66
23	34	66
24	34	66
25	34	66
26	35	65
27	35	65
28	35	65
29	35	65
30	36	64

Chance of precipitation in September

Any precipitation

Warrnambool gets around 88 mm of rain over 14.3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 47% and peaks near 50% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	46	46	47	47	48	48	49	49	49	50	50	49	49	49	48	48	48	47	47	47	46	46	46	45	45	44	44	43	43	42

	Rain chance (%)
1	46
2	46
3	47
4	47
5	48
6	48
7	49
8	49
9	49
10	50
11	50
12	49
13	49
14	49
15	48
16	48
17	48
18	47
19	47
20	47
21	46
22	46
23	46
24	45
25	45
26	44
27	44
28	43
29	43
30	42

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99
Comfortable (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1

Wind in September

Winds average 21 km/h in September.

Across September, daily wind ranges from about 20 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	20	20	20	20	20	20	20	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	20	20	20	20
Feels	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy

	Wind speed (km/h)	Feels
1	20	breezy
2	20	breezy
3	20	breezy
4	20	breezy
5	20	breezy
6	20	breezy
7	20	breezy
8	21	breezy
9	21	breezy
10	21	breezy
11	21	breezy
12	21	breezy
13	21	breezy
14	21	breezy
15	21	breezy
16	21	breezy
17	21	breezy
18	21	breezy
19	21	breezy
20	21	breezy
21	21	breezy
22	21	breezy
23	21	breezy
24	21	breezy
25	21	breezy
26	21	breezy
27	20	breezy
28	20	breezy
29	20	breezy
30	20	breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 06 min at the start of September to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 78 minutes over September. Sunrise moves from 7:56 AM to 7:09 AM, and sunset from 7:04 PM to 7:30 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	11.1	11.2	11.2	11.3	11.3	11.3	11.4	11.4	11.5	11.5	11.5	11.6	11.6	11.7	11.7	11.8	11.8	11.8	11.9	11.9	12.0	12.0	12.1	12.1	12.1	12.2	12.2	12.3	12.3	12.4
Sunrise (AM)	7:56	7:54	7:53	7:51	7:50	7:48	7:46	7:45	7:43	7:42	7:40	7:38	7:37	7:35	7:33	7:32	7:30	7:28	7:27	7:25	7:23	7:22	7:20	7:19	7:17	7:15	7:14	7:12	7:10	7:09
Sunset (PM)	7:04	7:04	7:05	7:06	7:07	7:08	7:09	7:10	7:11	7:12	7:13	7:13	7:14	7:15	7:16	7:17	7:18	7:19	7:20	7:21	7:22	7:22	7:23	7:24	7:25	7:26	7:27	7:28	7:29	7:30

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.1	7:56	7:04
2	11.2	7:54	7:04
3	11.2	7:53	7:05
4	11.3	7:51	7:06
5	11.3	7:50	7:07
6	11.3	7:48	7:08
7	11.4	7:46	7:09
8	11.4	7:45	7:10
9	11.5	7:43	7:11
10	11.5	7:42	7:12
11	11.5	7:40	7:13
12	11.6	7:38	7:13
13	11.6	7:37	7:14
14	11.7	7:35	7:15
15	11.7	7:33	7:16
16	11.8	7:32	7:17
17	11.8	7:30	7:18
18	11.8	7:28	7:19
19	11.9	7:27	7:20
20	11.9	7:25	7:21
21	12.0	7:23	7:22
22	12.0	7:22	7:22
23	12.1	7:20	7:23
24	12.1	7:19	7:24
25	12.1	7:17	7:25
26	12.2	7:15	7:26
27	12.2	7:14	7:27
28	12.3	7:12	7:28
29	12.3	7:10	7:29
30	12.4	7:09	7:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.77 kWh/m².

For context, solar energy here swings from a low near 1.69 kWh/m² to a high of 6.96 kWh/m² in January across the year — September's 3.77 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	3.2	3.3	3.3	3.3	3.4	3.4	3.5	3.5	3.5	3.5	3.6	3.6	3.7	3.7	3.7	3.8	3.8	3.9	3.9	3.9	4.0	4.0	4.1	4.1	4.2	4.2	4.3	4.3	4.4	4.4
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	3.2	Moderate
2	3.3	Moderate
3	3.3	Moderate
4	3.3	Moderate
5	3.4	Moderate
6	3.4	Moderate
7	3.5	Moderate
8	3.5	Moderate
9	3.5	Moderate
10	3.5	Moderate
11	3.6	Moderate
12	3.6	Moderate
13	3.7	Moderate
14	3.7	Moderate
15	3.7	Moderate
16	3.8	Moderate
17	3.8	Moderate
18	3.9	Moderate
19	3.9	Moderate
20	3.9	Moderate
21	4.0	Moderate
22	4.0	Bright
23	4.1	Bright
24	4.1	Bright
25	4.2	Bright
26	4.2	Bright
27	4.3	Bright
28	4.3	Bright
29	4.4	Bright
30	4.4	Bright

Planning a trip in September

Is September a good time to visit Warrnambool?

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

3.9

Sightseeing

9th-best month of the year

0.0

Beach & pool

9th-best month of the year

September is a weaker month for outdoor sightseeing in Warrnambool.

What to pack for Warrnambool in September

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

In September, Warrnambool sees daytime highs around 15°C and nights near 10°C. Pack rain gear. Worth having: a warm layer and a windbreaker. About 14 days see rain.

rain geara warm layera windbreaker

Sea temperature near Warrnambool in September

The nearest coast averages about 14°C in September — 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 18°C and coldest in September near 14°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	18	18	17	16	16	15	14	14	14	14	15	16
Comfort	Cool	Cool	Cool	Cool	Cool	Cool	Bracing	Bracing	Bracing	Bracing	Cool	Cool

	Sea temperature (°C)	Comfort
Jan	18	Cool
Feb	18	Cool
Mar	17	Cool
Apr	16	Cool
May	16	Cool
Jun	15	Cool
Jul	14	Bracing
Aug	14	Bracing
Sep	14	Bracing
Oct	14	Bracing
Nov	15	Cool
Dec	16	Cool

UV index in Warrnambool in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Warrnambool peaks around December 19 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	11	10	8	5	2	2	2	3	4	7	9	12
Level	Extreme	Extreme	Very high	Moderate	Moderate	Low	Moderate	Moderate	Moderate	High	Very high	Extreme

	UV index (midday)	Level
Jan	11	Extreme
Feb	10	Extreme
Mar	8	Very high
Apr	5	Moderate
May	2	Moderate
Jun	2	Low
Jul	2	Moderate
Aug	3	Moderate
Sep	4	Moderate
Oct	7	High
Nov	9	Very high
Dec	12	Extreme

Location & terrain

Where is Warrnambool?

Warrnambool sits at 38.4°S, 142.5°E, 24 m above sea level, in Australia. The nearest listed city is Ballarat, 150 km away.

Topography around Warrnambool

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

Within 3 km, the terrain around Warrnambool has only modest variations in elevation — a maximum elevation change of 51 m around an average of 15 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 103 m; within 80 km, significant variations in elevation — a maximum elevation change of 426 m.

The land around Warrnambool is covered by grassland (37%) and artificial surfaces (31%) within 3 km, water (44%) and grassland (43%) within 16 km, and grassland (50%) and water (32%) within 80 km.

3 km

51 m

grassland 37%

16 km

103 m

water 44%

80 km

426 m

grassland 50%

treesgrasslandcroplandartificial surfacesbare terrainwaterwetland

← August Warrnambool year-round climate October →Best places to visit in September

September weather nearby: Ballarat 150 km · Torquay 160 km · Highton 161 km · Mount Gambier 162 km · Geelong 166 km · Corio 169 km · Lara 172 km · Horsham 187 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

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 Warrnambool (-38.3818°, 142.488°, elevation 24 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. 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).

	Avg high (°C)	Avg low (°C)
1	14	9
2	14	9
3	14	10
4	14	10
5	14	10
6	14	10
7	14	10
8	14	10
9	14	10
10	14	10
11	14	10
12	14	10
13	15	10
14	15	10
15	15	10
16	15	10
17	15	10
18	15	10
19	15	10
20	15	10
21	15	10
22	15	10
23	15	10
24	15	10
25	15	10
26	15	10
27	15	10
28	15	10
29	15	10
30	15	10

	Clearer (%)	Cloudier (%)
1	39	61
2	39	61
3	39	61
4	38	62
5	38	62
6	38	62
7	38	62
8	38	62
9	37	63
10	37	63
11	37	63
12	36	64
13	36	64
14	35	65
15	35	65
16	35	65
17	34	66
18	34	66
19	34	66
20	34	66
21	34	66
22	34	66
23	34	66
24	34	66
25	34	66
26	35	65
27	35	65
28	35	65
29	35	65
30	36	64

	Rain chance (%)
1	46
2	46
3	47
4	47
5	48
6	48
7	49
8	49
9	49
10	50
11	50
12	49
13	49
14	49
15	48
16	48
17	48
18	47
19	47
20	47
21	46
22	46
23	46
24	45
25	45
26	44
27	44
28	43
29	43
30	42

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1

	Avg high (°C)	Avg low (°C)
1	14	9
2	14	9
3	14	10
4	14	10
5	14	10
6	14	10
7	14	10
8	14	10
9	14	10
10	14	10
11	14	10
12	14	10
13	15	10
14	15	10
15	15	10
16	15	10
17	15	10
18	15	10
19	15	10
20	15	10
21	15	10
22	15	10
23	15	10
24	15	10
25	15	10
26	15	10
27	15	10
28	15	10
29	15	10
30	15	10

	Clearer (%)	Cloudier (%)
1	39	61
2	39	61
3	39	61
4	38	62
5	38	62
6	38	62
7	38	62
8	38	62
9	37	63
10	37	63
11	37	63
12	36	64
13	36	64
14	35	65
15	35	65
16	35	65
17	34	66
18	34	66
19	34	66
20	34	66
21	34	66
22	34	66
23	34	66
24	34	66
25	34	66
26	35	65
27	35	65
28	35	65
29	35	65
30	36	64

	Rain chance (%)
1	46
2	46
3	47
4	47
5	48
6	48
7	49
8	49
9	49
10	50
11	50
12	49
13	49
14	49
15	48
16	48
17	48
18	47
19	47
20	47
21	46
22	46
23	46
24	45
25	45
26	44
27	44
28	43
29	43
30	42

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1

	Avg high (°C)	Avg low (°C)
1	14	9
2	14	9
3	14	10
4	14	10
5	14	10
6	14	10
7	14	10
8	14	10
9	14	10
10	14	10
11	14	10
12	14	10
13	15	10
14	15	10
15	15	10
16	15	10
17	15	10
18	15	10
19	15	10
20	15	10
21	15	10
22	15	10
23	15	10
24	15	10
25	15	10
26	15	10
27	15	10
28	15	10
29	15	10
30	15	10

	Clearer (%)	Cloudier (%)
1	39	61
2	39	61
3	39	61
4	38	62
5	38	62
6	38	62
7	38	62
8	38	62
9	37	63
10	37	63
11	37	63
12	36	64
13	36	64
14	35	65
15	35	65
16	35	65
17	34	66
18	34	66
19	34	66
20	34	66
21	34	66
22	34	66
23	34	66
24	34	66
25	34	66
26	35	65
27	35	65
28	35	65
29	35	65
30	36	64

	Rain chance (%)
1	46
2	46
3	47
4	47
5	48
6	48
7	49
8	49
9	49
10	50
11	50
12	49
13	49
14	49
15	48
16	48
17	48
18	47
19	47
20	47
21	46
22	46
23	46
24	45
25	45
26	44
27	44
28	43
29	43
30	42

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1