Geelong in December
December is right in the heart of summer for Geelong, and the weather has a definite personality this time of year.
Expect the mercury to hit around 25.7 degrees during the day and settle at 13.4 degrees after dark. Enough to keep you on your toes with the wardrobe. Comfortable during the day, with evenings that invite a light layer.
December is 5.7 degrees warmer than the yearly average here.
The rain data says 34mm over 7 days. Light enough that it won't ruin your plans.
Solar exposure averages 25.3 MJ/m2 per day in December, with UV levels in the extreme range. Sunscreen, hat, and sunnies are all essential. You can burn in under 10 minutes.
Our Comfort Score rates December at 9.7/10. That's about as good as it gets.
For your suitcase: a mix of short and long sleeves, something warmer for mornings and evenings, and SPF 50+ sunscreen and a hat.
Scroll down for the detailed climate data, or explore what nearby cities are like in December.
December at a Glance
Temperature Range
Daily temperature range in December. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- T-shirts and shorts for daytime
- A light rain jacket just in case
- High SPF sunscreen (50+), sunglasses, and UV-protective clothing
Coming From Overseas?
How December in Geelong stacks up against major cities around the world.
About 18 degrees warmer and considerably drier.
About 20 degrees warmer and considerably drier.
About 14 degrees warmer and considerably drier.
How December Compares
Geelong's monthly climate at a glance. December is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 24.2 | 14.7 | 49mm | 10.0 |
| Feb | 26.4 | 13.9 | 1mm | 9.8 |
| Mar | 25.3 | 13.2 | 16mm | 9.9 |
| Apr | 18.3 | 10.0 | 66mm | 5.4 |
| May | 16.8 | 8.6 | 36mm | 4.4 |
| Jun | 13.6 | 6.3 | 16mm | 2.2 |
| Jul | 12.8 | 6.2 | 56mm | 1.0 |
| Aug | 17.1 | 7.8 | 38mm | 4.7 |
| Sep | 16.7 | 8.6 | 43mm | 4.6 |
| Oct | 19.5 | 9.4 | 63mm | 7.2 |
| Nov | 23.2 | 12.0 | 84mm | 9.8 |
| Dec | 25.7 | 13.4 | 34mm | 9.7 |