Istanbul Weather in December
10.9°C high · 5.6°C low · 111 mm rain · 2.5h sun
Dec is a cool month in Istanbul — not peak season, but a good time to avoid crowds.
December at a glance
| Metric | Value |
|---|---|
| Average high | 10.9°C |
| Average low | 5.6°C |
| Rainfall | 111 mm |
| Sunshine | 2.5 hours/day |
| Daylight | 9.1 hours |
What to pack in December
Pack a jacket and layers, plus a raincoat and umbrella for Istanbul in December.
Istanbul weather by month
JanFebMarAprMayJunJulAugSepOctNovDec
Frequently asked questions
What is the weather in Istanbul in December?
Highs of 10.9°C and lows of 5.6°C, with about 111 mm of rain and 2.5 hours of sunshine per day.
Is December a good time to visit Istanbul?
Dec is a cool month in Istanbul — not peak season, but a good time to avoid crowds.
What to do in Istanbul · Best time to visit Istanbul
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.