Weather Comparison
Side-by-side weather comparison for January
| Metric | Bucharest | Istanbul | Better |
|---|---|---|---|
| Average HighHigher is warmer | 3°C (37°F) | 8°C (46°F)▲ | Istanbul |
| Average LowHigher is milder | -5°C (23°F) | 4°C (39°F)▲ | Istanbul |
| Rain DaysFewer is drier | 7 days▲ | 13 days | Bucharest |
| PrecipitationLess is drier | 39 mm▲ | 85 mm | Bucharest |
| Sunshine HoursMore is sunnier | 5h/day | 6h/day▲ | Istanbul |
| HumidityLower is more comfortable | 65% | 65% | Tie |
| UV IndexLower is safer | 1 | 1 | Tie |
| Wind SpeedCalmer is better | 15 km/h▲ | 23 km/h | Bucharest |
Bucharest and Istanbul are closely matched in January. Neither city has a clear advantage across all metrics. Your decision should come down to personal preference, cultural interests, and travel logistics rather than weather alone.
Bucharest is on the cooler side at 3°C, requiring warmer clothing. Istanbul is cooler at 8°C.
For travelers who prioritize dry weather, Bucharest is the stronger choice in January. Istanbul receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.
Bucharest reaches an average high of 3°C (37°F) and drops to -5°C (23°F) at night during January. The daily temperature range is 8°C, meaning moderate variation throughout the day.
Istanbul averages 8°C (46°F) for the high and 4°C (39°F) for the low, with a daily range of 4°C. There is a notable 5°C gap between the two cities, so expect a very different feel.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in January.
Bucharest receives approximately 39 mm of rainfall across 7 rain days during January. Rain is occasional, so a light rain jacket should suffice.
Istanbul sees 85 mm over 13 rain days. That makes Bucharest the drier option by 6 rain days and 46 mm of total precipitation.
Both cities share similar humidity levels at 65%.
Highs of 3°C, lows of -5°C, 7 rain days
Highs of 8°C, lows of 4°C, 13 rain days
Pack for both: heavy winter coat, thermal base layers, warm gloves and hat, insulated boots, a warm scarf. These items are useful in either destination during January.
The table below shows average high temperatures and rain days for every month. January is highlighted for quick reference.
| Month | Bucharest | Istanbul | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 3°C | 7d | 8°C | 13d |
| Feb | 6°C | 6d | 9°C | 12d |
| Mar | 11°C | 8d | 11°C | 11d |
| Apr | 17°C | 9d | 15°C | 8d |
| May | 23°C | 11d | 20°C | 6d |
| Jun | 26°C | 12d | 25°C | 6d |
| Jul | 29°C | 10d | 28°C | 4d |
| Aug | 29°C | 7d | 28°C | 3d |
| Sep | 23°C | 7d | 24°C | 7d |
| Oct | 17°C | 7d | 19°C | 9d |
| Nov | 10°C | 7d | 14°C | 10d |
| Dec | 4°C | 7d | 10°C | 13d |
Bucharest Weather in January
Full forecast, packing tips, and activities
Istanbul Weather in January
Full forecast, packing tips, and activities