Australia Sydney Weather in January — Climate Guide
January in Sydney is Excellent
January is Excellent for Sydney.
January is peak summer + peak tourism. Warm 26°C daytime, cool 19°C nights, 12 days of rain (mostly brief afternoon showers). UV index hits 12 — among the world's highest. Sunscreen + hat + shade are mandatory for any outdoor activity.
The Sydney Festival runs all month — 200+ music, theatre, dance, visual arts events across the city. Many free outdoor performances. Australia Day (January 26) is the national holiday with fireworks at Sydney Harbour visible from any waterfront — Mrs Macquarie's Chair, Bondi, Kirribilli all give views.
Travel score
Sydney January Weather Stats
Avg High
26°C
Avg Low
19°C
Rainy Days
12
102mm total
Sunshine
7.5h
Daily avg
Humidity
65%
Comfortable
UV Index
12
Extreme
Wind
18 km/h
Gusts 38
Sea Temp
23°C
Avg water temp
Crowds
Very busy
At attractions
January Sunrise & Sunset
Air Quality
PM2.5
12 μg/m³
PM10
24 μg/m³
Status
Good
Feels-Like Temperature & Wind
Feels like
Daytime
30°C
Nighttime
19°C
Humidity and wind affect how the actual temperature feels.
Wind
18 km/h
Max gust 38 km/h
Activities Recommended for January
January Travel Pros & Cons
Pros
- Peak summer weather — beaches at optimal temperatures
- Sydney Festival cultural events across 4 weeks
- Australia Day fireworks at Sydney Harbour
Cons
- Yearly-peak hotel prices (book 3-4 months ahead)
- Beaches + tourist sites at maximum capacity
- UV index 12 — sunburn within 15 min unprotected
January Events & Festivals
- Sydney Festival (entire January, 200+ events)
- Australia Day (January 26 — fireworks at Sydney Harbour)
- School holidays continue (until late January)
Sydney in January — Full Picture
January is peak summer + peak tourism. Warm 26°C daytime, cool 19°C nights, 12 days of rain (mostly brief afternoon showers). UV index hits 12 — among the world's highest. Sunscreen + hat + shade are mandatory for any outdoor activity.
The Sydney Festival runs all month — 200+ music, theatre, dance, visual arts events across the city. Many free outdoor performances. Australia Day (January 26) is the national holiday with fireworks at Sydney Harbour visible from any waterfront — Mrs Macquarie's Chair, Bondi, Kirribilli all give views.
Australian school holidays continue until late January. Hotel prices peak; book 3-4 months ahead. Bondi, Manly, Coogee beaches at full capacity 11:00-15:00 — arrive 8-10 AM for room. Sea temperature is at peak swimming comfort (23°C).
What to Wear & What to Pack
T-shirts + shorts + swimwear during the day. Light jacket for evenings (still warm at 19°C lows but breezy). Sunscreen SPF 50+ mandatory — Sydney UV hits 12 (extreme). Sun hat + sunglasses essential.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
22°C
14.3°C
12.3/mo
Summer (Jun·Jul·Aug)
17°C
8.7°C
10.3/mo
Autumn (Sep·Oct·Nov)
22°C
13.3°C
10.7/mo
Winter (Dec·Jan·Feb)
Current25.7°C
18.3°C
11.7/mo
Sydney Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 26° | 19° | 12d·102mm | 7.5h | 65% | 12 | Very busy | Peak |
| February (Best) | 26° | 19° | 12d·117mm | 7h | 67% | 12 | Busy | Peak |
| 25° | 17° | 13d·130mm | 6.5h | 67% | 10 | Busy | Shoulder | |
| 22° | 15° | 12d·127mm | 6.5h | 66% | 7 | Moderate | Shoulder | |
| 19° | 11° | 12d·121mm | 6h | 68% | 5 | Moderate | Shoulder | |
| 17° | 9° | 11d·132mm | 5.5h | 70% | 4 | Moderate | Shoulder | |
| 16° | 8° | 10d·98mm | 6h | 68% | 4 | Moderate | Shoulder | |
| 18° | 9° | 10d·81mm | 6.5h | 64% | 6 | Moderate | Low season | |
| September (Best) | 20° | 11° | 10d·70mm | 7h | 60% | 8 | Moderate | Shoulder |
| October (Best) | 22° | 13° | 11d·78mm | 7h | 60% | 10 | Moderate | Shoulder |
| November (Best) | 24° | 16° | 11d·84mm | 7.5h | 60% | 11 | Busy | Peak |
| December (Best) | 25° | 17° | 11d·78mm | 7.5h | 62% | 11 | Very busy | Peak |
View Other Months
Sydney January Hotel Picks
Frequently Asked Questions
Is January a good time to visit Sydney?
Sydney in January is Excellent. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Sydney in January?
Sydney January averages a high of 26°C and a low of 19°C.
Does it rain much in Sydney in January?
Sydney January averages 102mm of rainfall over about 12 rainy days.
What should I wear in Sydney in January?
T-shirts + shorts + swimwear during the day. Light jacket for evenings (still warm at 19°C lows but breezy). Sunscreen SPF 50+ mandatory — Sydney UV hits 12 (extreme). Sun hat + sunglasses essential.
What time are sunrise and sunset in Sydney in January?
Sydney January sunrise is 05:48 and sunset is 20:08, with 14h 20m of daylight.
What's the air quality like in Sydney in January?
Sydney January air quality (AQI) averages 38, rated Good. PM2.5 averages 12μg/m³.
What activities are recommended in Sydney in January?
In January, Sydney is great for Bondi Beach + swimming, Bondi to Coogee Coastal Walk, Sydney Festival events.
Is January peak season in Sydney?
Sydney January crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Sydney
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.