What to expect in Istanbul in December
December is a mixed month in Istanbul. You get 10° / 5°, but manageable crowds at the big attractions. Worth it for the right traveller.
Istanbul weather in December
Typical conditions in Istanbul during December, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast.
| Average high | 10°C 50°F |
|---|---|
| Average low | 5°C 41°F |
| Rainfall | Wet 60/100 |
| Total rainfall | 107 mm4.2 in |
| Rainy days | 17 |
| Sea temperature | 12°C 53°F |
| Daylight | 9 h 16 min |
| How it feels | Cool |
Average highs sit around 10°C with lows near 5°C. Expect a fair amount of rain, so plan indoor backups.
Crowds & demand
Crowd levels are Moderate for Istanbul — manageable crowds at the big attractions.
Prices & value
This month counts as low season: some of the best deals of the year.
What to pack
Proper cold-weather kit — a warm mid-layer, windproof outer, hat and gloves. Days peak near 10°C and nights fall to about 5°C. Add a compact rain shell and shoes you do not mind soaking; this is one of the wetter months.
What it costs
This is one of the cheaper months to visit Istanbul. Flights and accommodation sit near their yearly floor, and you can usually book late without being punished for it. Compared with the most expensive month of the year, you are looking at roughly 43% less.
Who this month suits
- Anyone travelling on a budget
- People who would rather have space than perfect conditions
Events & what’s on
No major festivals fall in December, so the destination feels like its everyday self.
Istanbul in December compared with nearby months
If your dates are flexible by a few weeks, this is what shifting them actually buys you.
| Month | Temp | Crowds | Price | Score |
|---|---|---|---|---|
| October | 20° / 13° | Moderate | $$ | 59 |
| November | 14° / 8° | Low | $ | 59 |
| December · This month | 10° / 5° | Moderate | $ | 51 |
| January | 8° / 3° | Low | $ | 55 |
| February | 9° / 3° | Low | $ | 57 |
These months score higher for Istanbul on the same blend of weather, crowds and price. Same destination, better odds.
Or go somewhere else in December
If the destination is negotiable but the month is not, these places are at their best in December.
Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation. Updated October 2026
