Monthly climate guide
Sydney weather in January
Expect warm weather in Sydney in January: afternoons reach about 26°C (79°F), while nights drop to around 21°C (69°F). Around 96 mm of rain falls over the month (wet), and skies are often cloudy. Daytime highs are about the same as December and about the same as February.
What stands out in January
- Just 250 km apart, but Sydney runs about 3°C cooler than Canberra this month.
- Seasonally, January counts as mid-summer in Sydney — the seasons are reversed south of the equator.
- There's little difference between day and night (around 5°C).
- Humidity near 76% makes 26°C feel stickier than it sounds.
January is typically Sydney's warmest month.
Avg high
26°C
79°F
Avg low
21°C
69°F
Rainfall
96 mm
wet
Humidity
76%
relative
Sky
59%
cloud · often cloudy
Sydney weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 26°C / 79°F | 21°C / 69°F | 96 mm | 76% | 59% |
| February | 25°C / 78°F | 21°C / 70°F | 119 mm | 76% | 60% |
| March | 24°C / 76°F | 20°C / 68°F | 130 mm | 76% | 62% |
| April | 22°C / 72°F | 18°C / 64°F | 78 mm | 74% | 55% |
| May | 20°C / 67°F | 15°C / 58°F | 33 mm | 71% | 52% |
| June | 17°C / 63°F | 13°C / 56°F | 84 mm | 75% | 60% |
| July | 17°C / 62°F | 12°C / 53°F | 39 mm | 71% | 48% |
| August | 17°C / 63°F | 12°C / 53°F | 52 mm | 69% | 48% |
| September | 20°C / 67°F | 14°C / 57°F | 38 mm | 68% | 48% |
| October | 22°C / 71°F | 16°C / 60°F | 57 mm | 70% | 55% |
| November | 23°C / 74°F | 17°C / 63°F | 77 mm | 72% | 59% |
| December | 25°C / 76°F | 19°C / 66°F | 74 mm | 74% | 59% |
What to pack for January
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is January a good time to visit Sydney?
Our Sydney guide recommends: September to November or March to May — Southern Hemisphere spring and autumn, avoiding peak summer crowds and heat.
Remember Australia's seasons are reversed from the Northern Hemisphere — 'summer' here runs December to February.
Best time to visit Sydney →Other Australia cities in January
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Sydney weather in January. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/australia/sydney/january
<a href="https://weathercompare.eu/weather/australia/sydney/january">Sydney weather in January</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/australia/sydney" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Sydney weather in January"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/australia/sydney/january">Sydney weather in January</a> – WeatherCompare</p>
Sydney in January: quick answers
Is January a good time to visit Sydney?
January is one of the wetter months in Sydney, with about 96 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Sydney in January?
Average highs are about 26°C (79°F) and average lows about 21°C (69°F), based on 10 years of daily data.
Does it rain a lot in Sydney in January?
Sydney typically gets around 96 mm of rain in January — wet.
When is the best time to visit Sydney?
September to November or March to May — Southern Hemisphere spring and autumn, avoiding peak summer crowds and heat.
Figures are long-term averages for the area around Sydney (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.