Australia (Sydney) · December
Best travel monthTravel seasonAustralia · Oceania
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 28° (82°)21– (70–)39 (102) | 27° (81°)21– (70–)35 (95) | 26° (79°)20– (68–)33 (91) | 24° (75°)18– (64–)29 (84) | 21° (70°)15– (59–)26 (79) | 18° (64°)13– (55–)22 (72) | 18° (64°)13– (55–)24 (75) | 19° (66°)14– (57–)26 (79) | 22° (72°)14– (57–)31 (88) | 24° (75°)16– (61–)34 (93) | 25° (77°)17– (63–)35 (95) | 27° (81°)19– (66–)35 (95) |
Ø night, range from coldest to warmest nightØ nightrange | 21° (70°)16– (61–)24 (75) | 21° (70°)16– (61–)23 (73) | 19° (66°)14– (57–)22 (72) | 16° (61°)11– (52–)20 (68) | 12° (54°)7– (45–)17 (63) | 11° (52°)5– (41–)15 (59) | 10° (50°)5– (41–)14 (57) | 10° (50°)6– (43–)15 (59) | 13° (55°)7– (45–)17 (63) | 15° (59°)10– (50–)19 (66) | 18° (64°)12– (54–)21 (70) | 19° (66°)14– (57–)22 (72) |
☀️Sunshine | 7h | 7h | 6h | 6h | 6h | 5h | 6h | 7h | 8h | 7h | 8h | 8h |
🌊Water Temp | 23° (73°) | 24° (75°) | 24° (75°) | 23° (73°) | 21° (70°) | 20° (68°) | 19° (66°) | 19° (66°) | 19° (66°) | 20° (68°) | 21° (70°) | 22° (72°) |
🌧Rain Days | 7d65mm (2.6") | 7d117mm (4.6") | 9d110mm (4.3") | 7d99mm (3.9") | 5d61mm (2.4") | 8d121mm (4.8") | 6d70mm (2.7") | 4d51mm (2.0") | 4d45mm (1.8") | 6d53mm (2.1") | 7d70mm (2.8") | 6d56mm (2.2") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Travel season — mid-range prices, good availability.
December is one of the best travel months for Australia (Sydney) — conditions are stable, temperatures reach 27°C (81°F), and outdoor activities are excellent.
Daytime highs average 27°C (81°F), cooling to 19°C (66°F) at night (daily average: 23°C (73°F)). Peaks reach around 35°C (95°F), the coldest nights around 14°C (57°F). The sun shines an average of 8 hours per day; there are 6 rain days with 56 mm (2.2 in) total. Sea temperature is 22°C (72°F) — pleasantly warm for long swim sessions.
Summer clothing and a light jacket for evenings is enough. Conditions are ideal for excursions, hikes, and sightseeing.
Australian summer: the New Year's Eve fireworks over the Harbour Bridge and Opera House are among the most famous in the world. Mardi Gras in February/March — one of the world's largest Pride parades, along Oxford Street. Bondi Beach in top form.
Packing list for Australia (Sydney) in December
- T-shirts and shorts
- Swimwear (the water is still a little fresh)
- SPF 50 sunscreen
- Sunglasses
- Sun hat
- Small umbrella (occasional showers possible)
- Travel first-aid kit
Frequently Asked Questions
- Is December a good time to visit Australia (Sydney)?
- Yes — December is one of the best months to visit Australia (Sydney) (Climate Score: 79/100). Pleasant temperatures (27°C (81°F)), good sunshine (8 h/day), and few rain days (6) make it one of the most recommended months.
- How warm is it in Australia (Sydney) in December?
- In December, Australia (Sydney) sees daily highs of 27°C (81°F). Nights cool to 19°C (66°F), with a daily average of 23°C (73°F). Peaks reach around 35°C (95°F), the coldest nights around 14°C (57°F).
- How much rain falls in Australia (Sydney) in December?
- In December, Australia (Sydney) receives an average of 56 mm (2.2 in) of rain over 6 rain days. An umbrella may occasionally be needed.
- How many sunshine hours does Australia (Sydney) get in December?
- Australia (Sydney) averages 8 sunshine hours per day in December — above the annual average.
- How warm is the water in Australia (Sydney) in December?
- Water temperature in Australia (Sydney) in December averages 22°C (72°F) — pleasantly warm for swim sessions.
