Over the last 365 complete days, the highest daily maximum at Sydney was 42°C on Dec 19 2025 and the lowest was 15°C on Jun 26 2026. The observed high is the highest temperature in the airport's own METAR reports during the local calendar day. Updated twice a day.
The first check appears after the first archived day ends.
Scorecard appears after 7 checked days (0/7 so far).
| Month | Average high | Warmest day | Coolest day | Days |
|---|---|---|---|---|
| Oct 2026 | 24.0° | 35° | 16° | 29 |
| Sep 2026 | 23.1° | 34° | 15° | 30 |
| Aug 2026 | 19.3° | 24° | 16° | 31 |
| Jul 2026 | 18.1° | 23° | 15° | 31 |
| Jun 2026 | 19.2° | 23° | 15° | 30 |
| May 2026 | 20.6° | 25° | 18° | 31 |
| Apr 2026 | 24.1° | 30° | 19° | 30 |
| Mar 2026 | 25.9° | 30° | 20° | 31 |
| Feb 2026 | 27.9° | 36° | 21° | 28 |
| Jan 2026 | 27.3° | 42° | 21° | 31 |
| Dec 2025 | 27.7° | 42° | 18° | 31 |
| Nov 2025 | 26.0° | 35° | 20° | 30 |
| Oct 2025 | 23.0° | 25° | 21° | 2 |