Warrnambool weather in December

In December, Warrnambool sees average daytime highs of 19°C and overnight lows near 13°C, with 52 mm of rain across 8.2 wet days and about 14.6 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 19°C through the month. The sky is clear or mostly clear about 26% of the time in December, and the air most often feels dry.

Daylight stretches from about 14 h 30 min at the start of December to 14 h 36 min by month's end. Set against the rest of the year, December is Warrnambool's 4th-clearest and 6th-windiest month. For the whole year in context, see Warrnambool's year-round climate.

Daytime high
19°
4th warmest
Overnight low
13°
9th coldest
Rainfall
52 mm
8.2 wet days
Daylight
14 h 42 min
6:06 AM – 8:46 PM
Cloud cover
62%
4th clearest
Wind
19 km/h
6th windiest
Solar energy
6.71 kWh/m²
Travel score
6.4
out of 10

Warrnambool is city in Victoria, Australia.

Founded
1855

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 19°C through the month.

A typical December day in Warrnambool 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 15°C and 25°C. Set against its neighbours, December runs about 2°C warmer than November and about 2°C cooler than January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
11912
21912
31912
41913
51913
61913
71913
81913
91913
101913
111913
121913
131913
141913
151913
161913
171913
181913
191913
201913
211913
221913
231913
241913
252013
262013
272013
282013
292014
302014
312014

Warrnambool weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 14°465.914.47.2
Feb21° / 15°314.813.57.2
Mar20° / 14°406.812.36.7
Apr18° / 13°548.9115.7
May15° / 11°7411.69.94.5
Jun14° / 10°8612.89.43.5
Jul13° / 9914.49.63.2
Aug13° / 11315.410.53.3
Sep15° / 10°8814.311.73.9
Oct16° / 10°6510.9134.8
Nov18° / 12°619.114.15.7
Dec19° / 13°528.214.66.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 19% of December, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14456
24357
34357
44357
54357
64258
74258
84159
94258
104159
114060
124060
134060
144159
154159
164159
174258
184258
194456
204456
214555
224555
234753
244753
254852
264951
274951
285050
295050
305149
315149

Chance of precipitation in December

Any precipitation

Warrnambool gets around 52 mm of rain over 8.2 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 26% and peaks near 30% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
529
629
729
829
928
1028
1128
1227
1327
1427
1527
1627
1726
1826
1926
2026
2125
2225
2325
2424
2523
2623
2722
2821
2921
3020
3120

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 81% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
185123
285123
385123
485123
585123
685123
785123
884133
984133
1084133
1183143
1283143
1382153
1482153
1581163
1681163
1780173
1880173
1980173
2079183
2179183
2279183
2378193
2478193
2577203
2677203
2776213
2876213
2976213
3075223
3175223

Wind in December

Winds average 19 km/h in December.

Across December, daily wind ranges from about 18 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1419light breeze
1519light breeze
1619light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 h 30 min at the start of December to 14 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 6:05 AM to 6:14 AM, and sunset from 8:34 PM to 8:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.56:058:34
214.56:058:35
314.56:058:36
414.56:058:37
514.56:058:38
614.66:058:39
714.66:058:39
814.66:058:40
914.66:058:41
1014.66:058:42
1114.66:058:43
1214.66:058:43
1314.66:068:44
1414.66:068:45
1514.76:068:45
1614.76:068:46
1714.76:078:47
1814.76:078:47
1914.76:078:48
2014.76:088:48
2114.76:088:49
2214.76:098:49
2314.76:098:50
2414.76:108:50
2514.76:108:51
2614.76:118:51
2714.76:118:51
2814.76:128:52
2914.76:138:52
3014.66:138:52
3114.66:148:52

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.71 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 — December's 6.71 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.6Intense
56.6Intense
66.6Intense
76.6Intense
86.6Intense
96.6Intense
106.6Intense
116.6Intense
126.6Intense
136.7Intense
146.7Intense
156.7Intense
166.7Intense
176.7Intense
186.7Intense
196.8Intense
206.8Intense
216.8Intense
226.9Intense
236.9Intense
247.0Intense
257.0Intense
267.0Intense
277.1Intense
287.1Intense
297.2Intense
307.2Intense
317.2Intense
Planning a trip in December

Is December a good time to visit Warrnambool?

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

6.4
Sightseeing
4th-best month of the year
2.9
Beach & pool
4th-best month of the year

December is a reasonable time to visit Warrnambool for sightseeing.

What to pack for Warrnambool in December

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

In December, Warrnambool sees daytime highs around 19°C and nights near 13°C. Pack sun protection. Worth having: rain gear. About 8 days see rain.

sun protectionrain gear

Sea temperature near Warrnambool in December

The nearest coast averages about 16°C in December — 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.

12°14°16°18°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan18Cool
Feb18Cool
Mar17Cool
Apr16Cool
May16Cool
Jun15Cool
Jul14Bracing
Aug14Bracing
Sep14Bracing
Oct14Bracing
Nov15Cool
Dec16Cool

UV index in Warrnambool in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateLowModerateVery highExtremeDec 19UV 12Jun 18UV 2
UV index (midday)Level
Jan11Extreme
Feb10Extreme
Mar8Very high
Apr5Moderate
May2Moderate
Jun2Low
Jul2Moderate
Aug3Moderate
Sep4Moderate
Oct7High
Nov9Very high
Dec12Extreme
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
16 km
103 m
80 km
426 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December 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
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 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).