Australia
Adelaide in December: weather, sea & travel advice
This month's data profile
Strong month under the current formula
Adelaide in December is climatically well suited to family holidays, city breaks, beach holidays and active holidays and hiking. The average daily high is around 27 °C, and the sea is about 20 °C. With about 4 rainy days it is dry.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
86/100 · #2
Warmth
#3
Dryness
#4
Sun
#2
Sea warmth
#4
Published best categories: Overall, Beach, Family
Adelaide · DecemberPhoto: Maggas at English Wikipedia · Public domainClimate facts
- Average high
- 27 °C
- Average low
- 14 °C
- Sea
- 20 °C
- Rainy days (est.)
- 4 rainy days (est.)
- Sun (est.)
- 10 h/day
- Humidity
- 54 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| November | 24 | 12 | 5 | 24 | 8.9 | 59 | 2.9 | 18 | 83 |
| December (selected) | 27 | 14 | 4 | 23 | 9.7 | 54 | 3.1 | 20 | 86 |
| January | 29 | 16 | 3 | 17 | 9.8 | 52 | 3.3 | 21 | 83 |
How do the previous and next months compare?
Baseline: December (86/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| November | -3 | -2.7 °C | -1.9 °C | +1.1 | +0.8 mm | -0.8 h | +4.7 % | -0.2 m/s | -1.9 °C |
| January | -3 | +2.5 °C | +1.9 °C | -1 | -6.2 mm | +0.1 h | -2.1 % | +0.2 m/s | +1.6 °C |
All twelve months in context
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Frequently asked questions
How warm is Adelaide in December?
The average daily high is around 27 °C, with an average daily low of about 14 °C.
Can you swim in Adelaide in December?
The sea is about 20 °C (refreshing).
Does it rain a lot in Adelaide in December?
The curated estimate is about 4 rainy days per month, not a directly measured long-term average. Total precipitation averages around 23 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Adelaide?
By the climate score, January, February, March and December are the strongest months for Adelaide. For a beach trip: January, February, March and December. December is one of them.