Frankston South weather in December

In December, Frankston South sees average daytime highs of 23°C and overnight lows near 13°C, with 59 mm of rain across 8.6 wet days and about 14.6 hours of daylight. It is the 3rd-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 24°C by the end. The sky is clear or mostly clear about 28% 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 Frankston South's 4th-clearest and 6th-windiest month. For the whole year in context, see Frankston South's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
13°
9th coldest
Rainfall
59 mm
8.6 wet days
Daylight
14 h 36 min
5:56 AM – 8:35 PM
Cloud cover
60%
4th clearest
Wind
14 km/h
6th windiest
Solar energy
7.1 kWh/m²
Travel score
7.1
out of 10

Frankston South is suburb of Melbourne, Australia.

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 22°C in the first days to 24°C by the end.

A typical December day in Frankston South reaches about 23°C in the afternoon and slips back to 13°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 32°C. Set against its neighbours, December runs about 2°C warmer than November and about 2°C cooler than January.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12212
22212
32212
42312
52312
62312
72312
82312
92312
102312
112312
122313
132313
142313
152313
162313
172313
182313
192413
202413
212413
222413
232413
242413
252413
262413
272413
282413
292414
302414
312414

Frankston South weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 15°506.114.47.5
Feb25° / 15°435.513.57.5
Mar23° / 13°386.912.37.4
Apr20° / 11°508116.4
May16° / 5710.7105.0
Jun14° / 6111.59.43.8
Jul13° / 5912.39.63.5
Aug14° / 7013.610.53.9
Sep16° / 7513.711.74.7
Oct19° / 10°6911.8135.7
Nov21° / 11°629.914.16.4
Dec23° / 13°598.614.67.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 58%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24258
34258
44258
54258
64159
74258
84258
94258
104159
114159
124060
134060
144159
154159
164060
174060
184060
194060
204159
214159
224159
234357
244357
254357
264555
274654
284654
294852
304852
314951

Chance of precipitation in December

Any precipitation

Frankston South gets around 59 mm of rain over 8.6 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 28% and peaks near 32% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
132
232
332
432
532
631
731
831
930
1030
1130
1229
1329
1429
1529
1628
1728
1828
1927
2027
2126
2226
2326
2425
2525
2624
2724
2823
2923
3022
3122

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 80% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1841240
2841240
3831250
4831250
5831250
6831250
7831250
8831250
9831340
10831340
11821350
12811450
13801550
14801550
15801550
16791650
17791650
18791650
19791650
20781750
21781750
22781750
23781750
24771850
25771850
26771850
27761950
28761950
29761950
30742051
31742051

Wind in December

Winds average 14 km/h in December.

Across December, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light 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
2914light breeze
3014light breeze
3114light 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 5:55 AM to 6:04 AM, and sunset from 8:23 PM to 8:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.55:558:23
214.55:558:24
314.55:558:25
414.55:558:26
514.55:558:27
614.55:558:27
714.65:558:28
814.65:558:29
914.65:558:30
1014.65:558:31
1114.65:558:31
1214.65:558:32
1314.65:568:33
1414.65:568:34
1514.65:568:34
1614.65:568:35
1714.65:578:35
1814.65:578:36
1914.75:578:37
2014.75:588:37
2114.75:588:38
2214.75:598:38
2314.75:598:39
2414.76:008:39
2514.76:008:39
2614.66:018:40
2714.66:018:40
2814.66:028:40
2914.66:038:41
3014.66:038:41
3114.66:048:41

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.1 kWh/m².

For context, solar energy here swings from a low near 1.82 kWh/m² to a high of 7.31 kWh/m² in January across the year — December's 7.1 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.9Intense
26.9Intense
37.0Intense
47.0Intense
57.0Intense
67.0Intense
77.0Intense
87.0Intense
97.0Intense
107.0Intense
117.0Intense
127.1Intense
137.1Intense
147.1Intense
157.1Intense
167.1Intense
177.2Intense
187.2Intense
197.2Intense
207.2Intense
217.3Intense
227.3Intense
237.3Intense
247.4Intense
257.4Intense
267.4Intense
277.5Intense
287.5Intense
297.5Intense
307.5Intense
317.5Intense
Planning a trip in December

Is December a good time to visit Frankston South?

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

7.1
Sightseeing
4th-best month of the year
5.6
Beach & pool
4th-best month of the year

December is one of the better times to visit Frankston South for general sightseeing.

What to pack for Frankston South in December

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

In December, Frankston South sees daytime highs around 23°C and nights near 13°C. Pack sun protection. Worth having: light clothes and rain gear. About 9 days see rain.

sun protectionlight clothesrain gear

Sea temperature near Frankston South in December

The nearest coast averages about 18°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 21°C and coldest in August near 11°C.

It's comfortable for a long swim from Jan 18 to Mar 11 — about 1.7 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
Dec18Cool

UV index in Frankston South 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 Frankston South 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 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateLowModerateVery highExtremeDec 19UV 12Jun 18UV 2
UV index (midday)Level
Jan11Extreme
Feb10Extreme
Mar8Very high
Apr5Moderate
May3Moderate
Jun2Low
Jul2Moderate
Aug3Moderate
Sep4Moderate
Oct7Very high
Nov10Very high
Dec12Extreme
Location & terrain

Where is Frankston South?

Frankston South sits at 38.2°S, 145.1°E, 88 m above sea level, in Australia. The nearest listed city is Langwarrin, 3.0 km away.

Topography around Frankston South

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

Within 3 km, the terrain around Frankston South has only modest variations in elevation — a maximum elevation change of 159 m around an average of 72 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 162 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,292 m.

The land around Frankston South is covered by trees (55%) and artificial surfaces (32%) within 3 km, water (34%), grassland (26%) and trees (21%) within 16 km, and water (35%), grassland (30%) and trees (22%) within 80 km.

3 km
159 m
16 km
162 m
80 km
1,292 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Langwarrin 3.0 km · Frankston 3.0 km · Frankston East 4.0 km · Mount Eliza 5.0 km · Seaford 7.0 km · Carrum Downs 8.0 km · Mornington 10 km · Cranbourne West 14 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 Frankston South (-38.166°, 145.1364°, elevation 88 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).