Istanbul weather in January
January in Istanbul: cold, rainy, with very humid — a good time to visit.
#12 of 12 months in Istanbul · #388 of 604 destinations to visit in January · comfort 62/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Istanbul climate normals — January
| Daytime high | 9°C / 49°F | 🧥 cold |
|---|---|---|
| Nighttime low | 5°C / 41°F | |
| Feels like (high) | 6°C / 43°F | |
| Rainfall | 92 mm / 3.6 in | 🌧 rainy |
| Rainy days | 13 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 3°C / 38°F | |
| Sunshine | 5.8 h/day | |
| Daylight | 9.6 h | |
| Wind | 24 km/h / 15 mph | |
| Snowfall | 9.1 cm / 3.6 in | |
| Air quality (US AQI) | 65 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Istanbul in January — FAQ
- Is January a good time to visit Istanbul?
- January in Istanbul: cold, rainy, with very humid — a good time to visit. It ranks #12 of 12 months for Istanbul on SeasonMap's comfort score (62/100).
- What is the weather like in Istanbul in January?
- In January, Istanbul averages a daily high of 9.4°C and a low of 5.2°C, with about 92 mm of rain over roughly 13.4 rainy days.
- What is the air quality in Istanbul in January?
- Istanbul has a mean US Air Quality Index of about 65 in January.
- Does it snow in Istanbul in January?
- Istanbul sees roughly 9.1 cm of snowfall in January.