The month in detail
What to expect in January
Winter in Istanbul is cool (10°C during the day). Days are short (2.2h of sunshine) but the city reveals a different side. Expect rain on 30% of days — a light raincoat in the bag is recommended.
January ranks 11 out of 12 months in Istanbul. Compared to December: −2°C daytime.
This month's conditions
What it's like in January
UV index
2 · low
no protection needed
Feels like
dry air
3°
Sea
10°C
cold, for the brave
Daylight
9.4h of daylight
Air quality
fair
AQI 46
Compare
Is January the right month?
The best month in Istanbul is July (9.3/10), 5.3 pts higher than January.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Istanbul
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Istanbul
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.
Country · Turkey
🗣️LanguageTurkish
💶CurrencyLivre turque (₺)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘCheap · 2/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trend ⓘStable
🔥Hottest monthAugust · 30°C
❄️Coolest monthJanuary · 10°C
🌧️Rainiest month ⓘJanuary · 30%
🏖️ Beach holiday
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
Explore
Other destinations in January
If January doesn't convince you for this destination, compare with others.
Location
Where is Istanbul ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
TurkeyTemperate oceanic climate with a 9.3 → 4.0 gap between best and worst month. 10 years of ERA5 data to choose by project.
41.01°N · 28.95°E
Questions
Frequently asked questions
What is the best time to visit Istanbul?
July is the best month with 29.0°C highs, 21.0°C lows, 10.3h of sunshine and 10.0% rainy days. The months of July & June offer comparable conditions.
How many hours of sunshine does Istanbul get in July?
Istanbul averages 10.3 sunshine hours per day in July. It is the sunniest month with a climate score of 9.0/10.
What is the rainiest month in Istanbul?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Istanbul in July?
In July, overnight lows reach 21.0°C, while afternoon highs average 29.0°C.
Is Istanbul good in winter?
In winter (December-February), Istanbul scores 4.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains July with a score of 9.0/10.
When should you avoid Istanbul?
January is the most difficult month to visit Istanbul, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Istanbul in January?
In January, the sea averages 10°C in Istanbul: cold, for the brave. Best left to hardened swimmers or those with a wetsuit.
Do you need sun protection in Istanbul in January?
The average UV index reaches 2 in January in Istanbul (low), with about 9.4h of daylight. No protection needed.