Over the last 365 complete days, the highest daily maximum at Istanbul was 34°C on Jul 22 2026 and the lowest was 3°C on Jan 1 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 | 19.3° | 27° | 14° | 29 |
| Sep 2026 | 23.4° | 29° | 17° | 30 |
| Aug 2026 | 27.3° | 32° | 24° | 31 |
| Jul 2026 | 27.4° | 34° | 23° | 31 |
| Jun 2026 | 25.6° | 31° | 20° | 30 |
| May 2026 | 20.5° | 27° | 11° | 31 |
| Apr 2026 | 14.6° | 24° | 9° | 30 |
| Mar 2026 | 9.9° | 19° | 7° | 31 |
| Feb 2026 | 11.1° | 22° | 5° | 28 |
| Jan 2026 | 10.5° | 18° | 3° | 31 |
| Dec 2025 | 11.7° | 17° | 5° | 31 |
| Nov 2025 | 18.7° | 24° | 13° | 30 |
| Oct 2025 | 20.0° | 20° | 20° | 2 |