Adelaide in December
In December, Adelaide averages 26°C (79°F) during the day and 15°C (59°F) at night, with around 9 days of rain (23 mm total).
High seasonConditions are warm and beach-friendly. Occasional showers are likely but won't dominate.
December is a great month to visit Adelaide: pleasant temperatures and relatively few wet days.
How December compares to the rest of the year in Adelaide
December is one of the warmest months in Adelaide (3rd of 12) and one of the driest months (10th of 12). Daytime temperature runs 5°C above the annual average (21°C). December runs 3°C warmer than November (23°C) and warms a further 2°C into January (28°C).
December sunrise & sunset in Adelaide
Times shown for Adelaide local time (Australia/Adelaide), calculated for the 15th of December. They shift by a few minutes day to day across the month.
Photography light in Adelaide — December
Golden-hour and blue-hour windows for the 15th of December, in Adelaide's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Adelaide in December
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on December's tier (High season) and Adelaide's popularity.
Crowds & pricing — December in Adelaide
This is a busy month in Adelaide — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: comfortable tourism weather
Sun & mosquito risk — December in Adelaide
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Adelaide in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 28°C / 82°F | 17°C / 62°F | 34 mm | 8 | — |
| February | 27°C / 81°F | 17°C / 62°F | 23 mm | 6 | — |
| March | 25°C / 77°F | 15°C / 60°F | 20 mm | 9 | — |
| April | 21°C / 71°F | 13°C / 56°F | 53 mm | 12 | — |
| May | 17°C / 63°F | 11°C / 52°F | 71 mm | 16 | — |
| June | 15°C / 58°F | 9°C / 48°F | 83 mm | 17 | — |
| July | 14°C / 57°F | 8°C / 47°F | 88 mm | 19 | — |
| August | 15°C / 59°F | 8°C / 47°F | 78 mm | 18 | — |
| September | 17°C / 63°F | 10°C / 49°F | 53 mm | 15 | — |
| October | 21°C / 69°F | 12°C / 53°F | 47 mm | 14 | — |
| November | 23°C / 73°F | 13°C / 56°F | 42 mm | 11 | — |
| December | 26°C / 79°F | 15°C / 59°F | 23 mm | 9 | — |
Other cities with similar December weather
🌍 See the full ranked list of climate twins for Adelaide in December →
Frequently asked questions
How hot is Adelaide in December?
In December, Adelaide averages a high of 26°C (79°F) and a low of 15°C (59°F) — generally warm.
Does it rain a lot in Adelaide in December?
December sees occasional rain in Adelaide, with about 9 rainy days on average.
Is December a good time to visit Adelaide?
December is warm. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Adelaide in December?
Pack light layers for warm days and cooler evenings. See the full December packing list for Adelaide for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.