Geelong weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Excellent
Best time to visit: November – April
What is the weather like in Geelong in December?
In December, Geelong is mild: daytime highs average 21 °C, and nights cool down to about 14 °C. The sea averages 17.0 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8 hours a day. Rain falls on about 7 days, adding up to 39 mm. All in all, December is an excellent month for a holiday in Geelong.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 84 | 92 | 96 |
| Day | 19° | 21° | 23° |
| Night | 12° | 14° | 16° |
| Sea | 16° | 17° | 19° |
| Sun | 7 h | 8 h | 9 h |
| Rain days | 9 | 7 | 5 |
More details for December
- Daylight
- 14 h 47 min05:54 – 20:41
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 22 km/haverage daily peakAll months
- Cloud cover
- 58 %on averageAll months
- Hot days
- 2 days30 °C or moreAll months
- Time zone
- UTC+11Australia/Melbourne
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %88 %
- Few rainy daysweight 30 %81 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
Geelong in December: quick answers
Is Geelong hot in December?
No. In December, Geelong is mild: daytime highs average 21 °C and nights drop to about 14 °C. On about 2 days the thermometer climbs to 30 °C or more.
Can you swim in Geelong in December?
Only if you don't mind cold water: in December the sea averages just 17.0 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Geelong in December?
Rain falls on about 7 days, adding up to 39 mm.
Geelong month by month
The whole year in GeelongAll destinations: AustraliaWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences