Monthly climate averages for Sydney, Australia. Based on 10-year ERA5 reanalysis data.
Cfa Humid Subtropical
Climate OverviewSydney, Australia in May has mild conditions, with highs averaging 19.1°C (66°F) and noticeably cooler mornings. Sea temperature averages 21°C (70°F).
This month falls at the end of Autumn.
Daily highs in May gradually drop from around 20°C (69°F) at the start to 18°C (64°F) by month's end.
May sees fairly even rainfall, totalling about 55 mm across the month.
The warmest days tend to fall around the 1th, averaging 20.5°C (69°F).
Compared to April, this month is about 3°C cooler with 1 fewer rainy days. Temperatures begin dropping heading into June.
Daily averages based on historical data (2016–2025)
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January best | 26°C / 20°C | 29°C / 22°C | 10days (79 mm) Wet | 10.3h Excellent | 75% Muggy | 7.9 Very High | Excellent | View Details |
| February best | 26°C / 20°C | 28°C / 22°C | 11days (88 mm) Wet | 10.3h Excellent | 74% Muggy | 7.4 Very High | Excellent | View Details |
| March best | 24°C / 19°C | 26°C / 20°C | 14days (129 mm) Wet | 9.2h Good | 76% Humid | 6.6 High | Excellent | View Details |
| April best | 22°C / 16°C | 22°C / 16°C | 8days (57 mm) Wet | 9.2h Good | 74% Muggy | 5 Moderate | Excellent | View Details |
| May | 19°C / 13°C | 18°C / 12°C | 7days (55 mm) Good | 8.4h Good | 72% Muggy | 3.5 Moderate | Good | View Details |
| June | 16°C / 10°C | 15°C / 8°C | 7days (54 mm) Good | 7.8h Good | 73% Muggy | 3.1 Moderate | Good | View Details |
| July | 16°C / 10°C | 14°C / 7°C | 6days (63 mm) Good | 8.3h Good | 70% Muggy | 3.4 Moderate | Good | View Details |
| August | 17°C / 10°C | 15°C / 8°C | 6days (48 mm) Good | 9h Good | 68% Muggy | 4.2 Moderate | Good | View Details |
| September | 20°C / 12°C | 19°C / 11°C | 6days (43 mm) Good | 10h Excellent | 66% Muggy | 6 High | Good | View Details |
| October | 22°C / 15°C | 22°C / 14°C | 9days (62 mm) Wet | 10.3h Excellent | 69% Muggy | 7.2 Very High | Good | View Details |
| November best | 23°C / 17°C | 24°C / 17°C | 8days (58 mm) Wet | 10.9h Excellent | 70% Muggy | 7.7 Very High | Excellent | View Details |
| December | 25°C / 19°C | 27°C / 19°C | 9days (58 mm) Wet | 11.2h Excellent | 71% Muggy | 8.4 Very High | Excellent | View Details |
Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.
A waterproof jacket or compact umbrella is recommended for occasional showers.
Last updated:
We use cookies to analyze traffic and improve your experience. No personal data is sold or shared with advertisers.
We use Google Analytics to understand how visitors use WorldStats. This helps us improve content and performance. Analytics cookies track page views and session data — no personally identifiable information is collected. You can change your preference at any time from the footer.
