Bruny Island in December
December in Bruny Island is peak summer, and the weather reflects it. You're looking at average daily highs of 19.1 degrees.
Daytime highs average 19.1 degrees, dropping to 12.0 degrees overnight. That's a 7-degree swing between day and night. Manageable with a decent layer, and you'll warm up by midday.
At 19.1 degrees, December runs 3.0 degrees above Bruny Island's annual average of 16.1 degrees.
You're looking at 138mm of rain across 19 days in a typical December. That's serious rainfall.
Solar exposure averages 23.5 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.
The Comfort Score for December comes in at 6.2/10, solidly pleasant.
Packing tip: bring layers you can peel on and off, a rain jacket or compact umbrella, and serious sun protection.
Check the data table below for the full picture, or compare Bruny Island 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
- A jumper or light cardigan for flexibility
- A waterproof jacket or compact umbrella
- High SPF sunscreen (50+), sunglasses, and UV-protective clothing
Coming From Overseas?
How December in Bruny Island stacks up against major cities around the world.
About 11 degrees warmer and considerably wetter.
About 13 degrees warmer and considerably wetter.
About 7 degrees warmer and considerably wetter.
How December Compares
Bruny Island's monthly climate at a glance. December is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 20.2 | 13.3 | 72mm | 7.6 |
| Feb | 21.0 | 13.4 | 25mm | 8.7 |
| Mar | 19.2 | 12.5 | 38mm | 6.8 |
| Apr | 16.2 | 11.1 | 56mm | 3.8 |
| May | 14.1 | 9.7 | 44mm | 1.9 |
| Jun | 11.8 | 8.1 | 49mm | 1.0 |
| Jul | 11.7 | 7.2 | 90mm | 1.0 |
| Aug | 13.6 | 8.7 | 101mm | 1.0 |
| Sep | 13.4 | 7.7 | 78mm | 1.6 |
| Oct | 15.3 | 8.8 | 67mm | 3.8 |
| Nov | 17.5 | 10.4 | 72mm | 5.6 |
| Dec | 19.1 | 12.0 | 138mm | 6.2 |