Sydney Weather in May
Australia · Oceanic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
May in Sydney sees average temperatures ranging from a low of 10.7°C (51.3°F) to a high of 19.0°C (66.2°F), with a mean of 14.4°C (57.9°F). Compared to the annual average of 17.3°C (63.1°F), this month is 2.9°C cooler than the yearly norm. Precipitation averages 99.1mm, making it approximately 1.0mm drier than the monthly average of 100.0mm. The city receives an average of 8.5 hours of sunshine per day during May, with relative humidity averaging 77.2%. Wind speeds reach an average maximum of 18.5 km/h. For travelers, this month offers a temperature experience in Sydney, with drier-than-average conditions compared to the rest of the year.
The numbers show something travelers often miss: Sydney's 'winter' (June-August) averages 17°C — warmer than London's summer. I spent a July there expecting cold and instead got perfect hiking weather. The real challenge is the UV index in summer (December-February). The data is clear: if you're planning beach days, March-April give you warmth without the extreme UV. Christmas on the beach still feels wrong to me, but the locals love it.
May vs Adjacent Months
| Metric | April | May | June |
|---|---|---|---|
| Mean Temp | 17.6°C (63.7°F) | 14.4°C (57.9°F) | 12.0°C (53.6°F) |
| Rainfall | 103.7mm | 99.1mm | 59.6mm |
| Sunshine | 9.1 hrs | 8.5 hrs | 8.3 hrs |
| Humidity | 77.0% | 77.2% | 75.4% |
| Wind | 18.3 km/h | 18.5 km/h | 18.8 km/h |
| Rainy Days | 16.6 | 14.6 | 12.4 |
Seasonal Context
May falls in Spring in the Northern Hemisphere. Spring is a transitional season with temperatures rising from winter lows. For travelers visiting Sydney in May, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Sydney in May?
The average temperature in Sydney during May ranges from 10.7°C (51.3°F) to 19.0°C (66.2°F), with a mean of 14.4°C (57.9°F).
How much does it rain in Sydney in May?
Sydney receives an average of 99.1mm of precipitation in May, spread across approximately 14.6 rainy days.
What should I pack for Sydney in May?
Based on May weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is May a good time to visit Sydney?
May is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Sydney
Cities with Similar May Climate (Oceanic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: -33.87°, 151.21°. Timezone: Australia/Sydney. Last updated: 2026-07-30.