Australia Sydney Weather in August — Climate Guide
August in Sydney is Moderate
August is Moderate for Sydney.
August is the late-winter transition. 18°C daytime — 2°C warmer than July. Sea still cold (16°C). Hotel rates at yearly low (best value for non-beach travelers).
City2Surf is the canonical Sydney winter event — 80,000+ runners run 14km from CBD's Park Street to Bondi Beach on the second Sunday of August. The world's largest fun run. Streets close + transport disrupted that morning.
Travel score
Sydney August Weather Stats
Avg High
18°C
Avg Low
9°C
Rainy Days
10
81mm total
Sunshine
6.5h
Daily avg
Humidity
64%
Comfortable
UV Index
6
High
Wind
14 km/h
Gusts 30
Sea Temp
16°C
Avg water temp
Crowds
Moderate
At attractions
August Sunrise & Sunset
Air Quality
PM2.5
12 μg/m³
PM10
24 μg/m³
Status
Good
Feels-Like Temperature & Wind
Feels like
Daytime
19°C
Nighttime
7°C
Humidity and wind affect how the actual temperature feels.
Wind
14 km/h
Max gust 30 km/h
Activities Recommended for August
August Travel Pros & Cons
Pros
- Lowest hotel rates of the year
- City2Surf cultural event
- Whale watching continues + slightly warmer than July
Cons
- Still too cold for beach
- Indoor activities dominate
- Days still short (10h 30m daylight)
August Events & Festivals
- City2Surf (mid-August Sunday — 14km Sydney CBD to Bondi run)
- Hotel rates near yearly low
- Whale watching continues
Sydney in August — Full Picture
August is the late-winter transition. 18°C daytime — 2°C warmer than July. Sea still cold (16°C). Hotel rates at yearly low (best value for non-beach travelers).
City2Surf is the canonical Sydney winter event — 80,000+ runners run 14km from CBD's Park Street to Bondi Beach on the second Sunday of August. The world's largest fun run. Streets close + transport disrupted that morning.
The trade-off: best Sydney value pricing + zero beach. For travelers who care about culture + food + harbor over swimming, August is the smart pick.
What to Wear & What to Pack
Late winter — sweater + jacket + scarf. Marginal warming from July. Days getting longer, sunset later. Light gloves for cold mornings.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
22°C
14.3°C
12.3/mo
Summer (Jun·Jul·Aug)
Current17°C
8.7°C
10.3/mo
Autumn (Sep·Oct·Nov)
22°C
13.3°C
10.7/mo
Winter (Dec·Jan·Feb)
25.7°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 August Hotel Picks
Frequently Asked Questions
Is August a good time to visit Sydney?
Sydney in August is Moderate. Tourist crowds are moderate and flight/hotel prices are low season.
What's the average temperature in Sydney in August?
Sydney August averages a high of 18°C and a low of 9°C.
Does it rain much in Sydney in August?
Sydney August averages 81mm of rainfall over about 10 rainy days.
What should I wear in Sydney in August?
Late winter — sweater + jacket + scarf. Marginal warming from July. Days getting longer, sunset later. Light gloves for cold mornings.
What time are sunrise and sunset in Sydney in August?
Sydney August sunrise is 06:32 and sunset is 17:30, with 10h 58m of daylight.
What's the air quality like in Sydney in August?
Sydney August air quality (AQI) averages 38, rated Good. PM2.5 averages 12μg/m³.
What activities are recommended in Sydney in August?
In August, Sydney is great for City2Surf 14km run, Whale watching, Sydney Opera House shows.
Is August peak season in Sydney?
Sydney August crowds are moderate and prices are low season. You can travel relatively comfortably without long queues.
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.