Christmas Island in December
December in Christmas Island is peak summer, and the weather reflects it. You're looking at average daily highs of 26.4 degrees.
Expect the mercury to hit around 26.4 degrees during the day and settle at 24.7 degrees after dark. The temperature stays pretty consistent through the day. Comfortable during the day, with evenings that invite a light layer.
December's temperature is very close to the annual average for Christmas Island.
Rainfall in December averages 359mm over about 28 days. That means roughly a 93% chance of rain on any given day, so definitely bring rain gear.
Solar exposure averages 17.4 MJ/m2 per day in December, with UV levels in the very high range. You'll want SPF 50+ and a decent hat.
The Comfort Score is 5.6/10 for December. It's fine, but not the highlight of the calendar.
Packing tip: bring t-shirts with a light layer for evenings, waterproof gear, and SPF 50+ sunscreen and a hat.
The full data breakdown is below. You can also see how other Australian cities compare 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
- Comfortable casual wear suitable for warm days
- Proper rain gear for frequent showers
- Sunscreen (SPF 30+) and sunglasses for UV protection
- Moisture-wicking fabrics to stay comfortable in humid conditions
Coming From Overseas?
How December in Christmas Island stacks up against major cities around the world.
About 18 degrees warmer and considerably wetter.
About 20 degrees warmer and considerably wetter.
About 14 degrees warmer and considerably wetter.
How December Compares
Christmas Island's monthly climate at a glance. December is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 26.9 | 25.2 | 178mm | 6.5 |
| Feb | 27.8 | 26.1 | 44mm | 7.6 |
| Mar | 27.0 | 25.5 | 175mm | 6.5 |
| Apr | 27.4 | 25.7 | 142mm | 6.5 |
| May | 27.0 | 25.6 | 36mm | 7.6 |
| Jun | 26.6 | 25.1 | 20mm | 8.0 |
| Jul | 25.5 | 23.9 | 48mm | 8.4 |
| Aug | 24.9 | 23.7 | 18mm | 9.2 |
| Sep | 25.2 | 23.9 | 23mm | 9.0 |
| Oct | 25.9 | 24.6 | 29mm | 8.6 |
| Nov | 26.6 | 24.7 | 116mm | 6.8 |
| Dec | 26.4 | 24.7 | 359mm | 5.6 |