Sydney in December
3.6out of 10
Not the best time
Cold: highs around 3°C. Frequent rain: about 14 rainy days.
3°CAvg high
-2°CAvg low
14Rainy days (139 mm)
8:27 hDaylight
07:44Sunrise · 16:10 Sunset
Why this score
- Cold: highs around 3°C
- Frequent rain: about 14 rainy days
- Nights fall to about -2°C
What to wear and pack
- Winter coat, hat and scarf
- Rain jacket or compact umbrella
- Gloves for freezing mornings
How reliable is the forecast?
Rainfall in December is fairly consistent from year to year (2.5 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -1°C | -7°C | 118 mm | 13 | – | – | 3.2 |
| February | -1°C | -8°C | 111 mm | 11 | – | – | 3.4 |
| March | 1°C | -5°C | 108 mm | 12 | – | – | 3.5 |
| April | 5°C | 0°C | 106 mm | 13 | – | – | 4.4 |
| May | 11°C | 4°C | 86 mm | 11 | – | – | 5.7 |
| June | 16°C | 10°C | 89 mm | 11 | – | – | 6.6 |
| July | 21°C | 15°C | 85 mm | 11 | – | – | 7.5 |
| August | 22°C | 16°C | 89 mm | 11 | – | – | 7.6 |
| September | 18°C | 13°C | 104 mm | 10 | – | – | 7.0 |
| October | 12°C | 8°C | 131 mm | 12 | – | – | 5.7 |
| November | 7°C | 3°C | 124 mm | 13 | – | – | 4.8 |
| December | 3°C | -2°C | 139 mm | 14 | – | – | 3.6 |
Frequently asked questions
How hot is Sydney in December?
Daytime highs average 3°C and nights about -2°C.
When is the best time to visit Sydney?
The best months are August, July, September.