Normally the weather in Istanbul in January is 7, with highs being around 8 with low temperatures being around 4. Our table below has the full details:
| Month | Degrees Celsius |
|---|---|
| Temperature | 7 |
| High Temperature | 8 |
| Low Temperature | 4 |
| Sunshine Per Day | 4 |
Useful Links: Istanbul Weather: Average Weather & Yearly Climate