- Rain mm/yr
- 897
Updated July 2026 · Sources cited: weather-atlas.com, en.climate-data.org
Good to know
Good to Know
- Spring (September–November) and autumn (March–May) consistently offer the best balance of pleasant weather, manageable crowds, and affordable accommodation and flights.
- Sydney summer (December–February) is peak tourist season—expect significantly higher prices and crowded beaches and attractions. Heat and humidity can reach extreme levels, sometimes above 30°C (86°F) with high humidity.
- Winter (June–August) is the low season with the cheapest flights and accommodation. Mild temperatures (8–17°C) make it ideal for city exploration, whale watching, and hiking without summer crowds.
- Rain comes year-round but typically in short, intense bursts rather than all-day downpours. June has the most rainfall.
- No true rainy season exists; Sydney is relatively sunny year-round with an average of 3,272 sunshine hours annually.
- Sea temperature ranges from 16°C (61°F) in August/September to 23.7°C (74.7°F) in February. Swimming with a wetsuit is comfortable year-round; wetsuits generally required May–September.
Peak Month
- Month
- January
Daytime High
- Celsius
- 26
- Fahrenheit
- 79
Nighttime Low
- Celsius
- 20
- Fahrenheit
- 68
Off Peak Month
- Month
- July
Daytime High
- Celsius
- 16
- Fahrenheit
- 61
Nighttime Low
- Celsius
- 8
- Fahrenheit
- 46
Seasons
- Autumn
- March to May. Mild and pleasant, with temperatures dropping to 14.6–22.2°C (58–72°F). Humidity decreases. Humpback whales migrate north from May onwards.
- Spring
- September to November. Warm and sunny, 11–23°C (51.8–73.4°F). Considered by many travelers as the best time to visit—comfortable temperatures, lower humidity, fewer crowds.
- Summer
- December to February. Warm to hot with average temperatures between 18°C to 28°C (64–82°F). High humidity and occasional intense thunderstorms. Peak tourist season with highest costs.
- Winter
- June to August. Mild winters averaging 8.8–17°C (47.6–62.6°F). June is the wettest month. Generally pleasant with fewer tourists and significantly lower prices.
Humidity
- Lowest Month
- August at 49% relative humidity
- Highest Month
- February at 64% relative humidity
- Note
- Moderate humidity levels year-round ranging from 49–64%
Rainfall
- Pattern
- No distinct dry season; rain falls year-round but peaks during summer and autumn months. February is the wettest month with approximately 110 mm (4.3 in) and 12 rainy days. September is the driest with approximately 53 mm (2.1 in) and 10 rainy days. June also experiences significant rainfall (approximately 132 mm / 5.2 in).
- Annual Total Mm
- 897
- Annual Total Inches
- 35
- Thunderstorm Note
- Sydney experiences 20–25 thunder days annually on average. Heavy rainfall typically arrives in late summer and early autumn.
Snowfall
Extremely rare in Sydney itself. Snow does not occur in the city. Regional areas such as the Blue Mountains, Snowy Mountains (Jindabyne, 6 hours south), and parts of New South Wales can receive snow, but Sydney CBD remains snow-free.
AI-generated estimateData refreshed July 2026
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About Sydney
Data last updated July 2026 · Verify anything important.