Phillip Island in December
So, what's Phillip Island actually like in December? In a word: crisp. It's summer, and the days are averaging 21.8 degrees.
Expect the mercury to hit around 21.8 degrees during the day and settle at 15.1 degrees after dark. The temperature stays pretty consistent through the day. Comfortable during the day, with evenings that invite a light layer.
At 21.8 degrees, December runs 3.5 degrees above Phillip Island's annual average of 18.3 degrees.
Rainfall in December averages 82mm over about 10 days. That means roughly a 33% chance of rain on any given day, pack a compact umbrella just in case.
Sunshine-wise, December delivers around 26.8 MJ/m2 of daily solar radiation. UV sits in the extreme category. Sunscreen, hat, and sunnies are all essential. You can burn in under 10 minutes.
December earns a 8.9/10 on our Comfort Score. This is prime time.
Packing tip: bring layers you can peel on and off, waterproof gear, and serious sun protection.
Check the data table below for the full picture, or compare Phillip 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
- Layered clothing for mild to cool conditions
- Proper rain gear for frequent showers
- High SPF sunscreen (50+), sunglasses, and UV-protective clothing
Coming From Overseas?
How December in Phillip Island stacks up against major cities around the world.
About 14 degrees warmer and considerably wetter.
About 16 degrees warmer and considerably drier.
About 10 degrees warmer and considerably wetter.
How December Compares
Phillip Island's monthly climate at a glance. December is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 22.0 | 16.3 | 53mm | 9.1 |
| Feb | 23.5 | 16.4 | 7mm | 10.0 |
| Mar | 22.3 | 15.9 | 14mm | 9.7 |
| Apr | 17.4 | 13.4 | 88mm | 4.1 |
| May | 16.3 | 11.6 | 29mm | 3.9 |
| Jun | 13.5 | 9.8 | 30mm | 1.9 |
| Jul | 12.7 | 8.8 | 84mm | 1.0 |
| Aug | 16.0 | 10.0 | 39mm | 3.7 |
| Sep | 15.6 | 10.6 | 55mm | 3.4 |
| Oct | 17.8 | 11.7 | 67mm | 5.9 |
| Nov | 20.8 | 13.7 | 65mm | 8.4 |
| Dec | 21.8 | 15.1 | 82mm | 8.9 |