Istanbul in January is cold, damp and dark by 17:45, yet it is far from empty. Official averages show highs of 9.6°C (49°F), lows of 4.2°C (39°F) and about 16 rainy days, the most of any month. Even so, Istanbul received 1,359,798 foreign visitors in January 2026, which is more than the January before.
Last checked: 10 November 2026. Weather averages (1950–2025) come from the Turkish State Meteorological Service (MGM). Visitor numbers come from the January 2026 report of the Istanbul Provincial Directorate of Culture and Tourism. Sunrise and sunset times are our own calculation for 2027.
Istanbul in January: weather and daylight
January is the wettest month by number of days, although December has more rain in total. This table puts it next to its neighbours.
| Long-term average | December | January | February |
|---|---|---|---|
| Daytime high | 11.8°C (53°F) | 9.6°C (49°F) | 10.2°C (50°F) |
| Night low | 6.5°C (44°F) | 4.2°C (40°F) | 4.2°C (40°F) |
| Rainy days | 15.5 | 16.3 | 13.9 |
| Monthly rain | 99.2 mm | 88.8 mm | 70.7 mm |
The same record shows how far one January can stray. The warmest January day reached 22.4°C (72°F), and the coldest fell to −6.8°C (20°F). Pack for both ends, and check a forecast a few days before you fly.
Plan around the early dark
Türkiye stays on UTC+3 all year, so the clock does not change in winter. In 2027 the sun rises around 08:29 on 1 January and sets around 17:45. By 15 January it rises at 08:27 and sets at 17:59. That gives roughly nine and a half hours of daylight.
Put the outdoor sights between 09:00 and 16:30. Move museums, bazaars and the hammam to the afternoon, when the light fades anyway. Our rainy day plan and first hammam guide fit these hours well.
How busy is January, really?
Many guides call January the quiet month. The official count says it is quieter than summer, but not empty.
| Foreign visitors to Istanbul | Number |
|---|---|
| January 2024 | 1,165,996 |
| January 2025 | 1,268,660 |
| January 2026 | 1,359,798 (+7.18%) |
| August 2025 (for comparison) | 1,852,996 |
January 2026 therefore drew about 73% of the August 2025 total. Russia supplied the largest share at 11.34%. Germany (6.78%), Iran (4.77%), Saudi Arabia (4.58%), the United States (4.46%) and the United Kingdom (3.54%) followed. The report counts people crossing Istanbul’s border gates, so it includes business travellers and transit stays.
What to pack for Istanbul in January
- A waterproof coat with a hood, because umbrellas struggle in Bosphorus wind.
- Shoes with grip. Wet cobbles and marble steps get slippery.
- Layers you can remove in heated museums and trams.
- Gloves and a hat for ferry decks.
Ferries, snow and closures to expect
Strong wind or fog can cancel ferries. Our ferry alternatives guide lists the fallback routes. Snow is possible but uneven. Read does it snow in Istanbul before you hope for it. Topkapı Palace closes on Tuesdays, as we note in our 3-day itinerary, so plan that visit for another day.
Is January a good time to visit Istanbul?
Yes, if you accept short days and wet weather. You trade sunshine for shorter queues at the big sights and a calmer city. It suits museums, food and slow walks. It does not suit a Bosphorus cruise on deck or a long climb up Galata. For a warmer comparison, see our guide to Istanbul weather by month.
Istanbul in January: quick answers
How cold is Istanbul in January?
Highs average 9.6°C (49°F) and lows 4.2°C (39°F). Frost is possible at night, and the record low is −6.8°C.
Does Istanbul have a time change in winter?
No. Türkiye stays on UTC+3 all year, so sunrise falls after 08:00 in January.
