Verdict: Excellent month
Istanbul Weather in October
October hits the sweet spot in Istanbul — highs around 21°C (70°F), ideal for a full day on foot. Rain is occasional — about 6 wet days in a typical year. Overall, October is one of the best months of the year to be in Istanbul.
Average high
21°C / 70°F
Average low
14°C / 57°F
Rain days
~6
Precipitation
44 mm
What to pack for Istanbul in October
- Layers — t-shirts under a light jacket or sweater
- Comfortable walking shoes — every guide on this site assumes you'll use them
October against the rest of the year
Warmest in Istanbul: Aug (30°C / 86°F) · Coolest: Jan (10°C / 50°F) · Wettest: Mar (~13 rain days)
10°
4°
Jan
11°
4°
Feb
12°
5°
Mar
17°
9°
Apr
21°
12°
May
26°
18°
Jun
29°
21°
Jul
30°
21°
Aug
26°
18°
Sep
21°
14°
Oct
16°
10°
Nov
13°
7°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)