What is the weather like in Istanbul vs Marmaris in September?

In September, Istanbul averages 27°C high / 19°C low with about 41 mm of rain; Marmaris averages 33°C high / 22°C low with about 11 mm.

Istanbul vs Marmaris in September

Marmaris is the better pick in September — 96 vs 86 on SeasonMap's comfort score. Marmaris is sweltering, dry, while Istanbul is warm, a little rain.

Istanbul vs Marmaris — September climate, side by side

	🇹🇷 Istanbul	🇹🇷 Marmaris
Comfort score	86/100 (A)	96/100 (S)
Feels-like high	27°C	34°C
Avg high / low	27° / 19°	33° / 22°
Rainfall	41 mm	11 mm
Rainy days	7	3
Humidity	70%	61%
Air quality (AQI)	52	52

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Istanbul 🇹🇷 Turkeywarm, a little rain · best May86
Marmaris 🇹🇷 Turkeysweltering, dry · best September96

Istanbul vs Marmaris in September — FAQ

Is September better in Istanbul or Marmaris?: Marmaris is the better pick in September — 96 vs 86 on SeasonMap's comfort score. Marmaris is sweltering, dry, while Istanbul is warm, a little rain.
What is the weather like in Istanbul vs Marmaris in September?: In September, Istanbul averages 27°C high / 19°C low with about 41 mm of rain; Marmaris averages 33°C high / 22°C low with about 11 mm.