Goolwa in December
December is right in the heart of summer for Goolwa, and the weather has a definite personality this time of year.
The average daily maximum is 25.8 degrees with overnight lows of 15.2 degrees. That's solidly pleasant territory. Great for being outdoors.
At 25.8 degrees, December runs 5.2 degrees above Goolwa's annual average of 20.6 degrees.
You're looking at 20mm of rain across 3 days in a typical December. That's barely a sprinkle.
Solar exposure averages 26.7 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.
December earns a 10.0/10 on our Comfort Score. This is prime time.
Packing tip: bring t-shirts with a light layer for evenings, and SPF 50+ sunscreen and a hat.
Check the data table below for the full picture, or compare Goolwa in December with another destination.
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
- Strong sun protection including a hat and SPF 50+
Coming From Overseas?
How December in Goolwa 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
Goolwa's monthly climate at a glance. December is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 23.2 | 15.1 | 112mm | 9.7 |
| Feb | 25.3 | 15.0 | 1mm | 10.0 |
| Mar | 25.3 | 15.0 | 10mm | 10.0 |
| Apr | 18.6 | 11.4 | 22mm | 6.3 |
| May | 17.9 | 9.2 | 18mm | 5.8 |
| Jun | 14.6 | 7.9 | 76mm | 1.8 |
| Jul | 14.4 | 7.6 | 49mm | 2.4 |
| Aug | 18.2 | 9.6 | 35mm | 5.7 |
| Sep | 18.0 | 9.8 | 26mm | 6.1 |
| Oct | 21.8 | 12.2 | 26mm | 9.1 |
| Nov | 24.2 | 13.4 | 48mm | 10.0 |
| Dec | 25.8 | 15.2 | 20mm | 10.0 |