Monthly weather forecast in Istanbul
| Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday |
|---|---|---|---|---|---|---|
| 3 December, Sunday. day, 20°; night, 11°; partly cloudy | 4 December, Monday. day, 11°; night, 9°; light rain | 5 December, Tuesday. day, 13°; night, 10°; partly cloudy | 6 December, Wednesday. day, 13°; night, 11°; light rain | 7 December, Thursday. day, 13°; night, 10°; light rain | 8 December, Friday. day, 9°; night, 6°; light rain | 9 December, Saturday. day, 11°; night, 9°; overcast |
| 10 December, Sunday. day, 12°; night, 10°; overcast | 11 December, Monday. day, 12°; night, 10°; light rain | 12 December, Tuesday. day, 11°; night, 8°; light rain | 13 December, Wednesday. day, 10°; night, 6°; overcast | 14 December, Thursday. day, 9°; night, 6°; overcast | 15 December, Friday. day, 9°; night, 5°; overcast | 16 December, Saturday. day, 3°; night, 1°; partly cloudy |
| 17 December, Sunday. day, 0°; night, -2°; partly cloudy | 18 December, Monday. day, 0°; night, -1°; partly cloudy | 19 December, Tuesday. day, 2°; night, -4°; mostly clear | 20 December, Wednesday. day, 3°; night, 0°; mostly clear | 21 December, Thursday. day, 4°; night, 0°; mostly clear | 22 December, Friday. day, 3°; night, 1°; partly cloudy | 23 December, Saturday. day, 3°; night, 3°; partly cloudy |
| 24 December, Sunday. day, 5°; night, 2°; partly cloudy | 25 December, Monday. day, 5°; night, 1°; mostly clear | 26 December, Tuesday. day, 8°; night, 5°; partly cloudy | 27 December, Wednesday. day, 10°; night, 8°; partly cloudy | 28 December, Thursday. day, 14°; night, 9°; partly cloudy | 29 December, Friday. day, 14°; night, 7°; mostly clear | 30 December, Saturday. day, 14°; night, 4°; clear |
| 31 December, Sunday. day, 12°; night, 6°; clear | 1 January, Monday. day, 13°; night, 10°; partly cloudy | Next, the average data for 10 years2 January, Tuesday. day, 7°; night, 6°; clear | 3 January, Wednesday. day, 7°; night, 6°; rain | 4 January, Thursday. day, 7°; night, 5°; rain | 5 January, Friday. day, 7°; night, 5°; rain | 6 January, Saturday. day, 9°; night, 6°; rain |
Average for 30 days
7 sunny days; 6 days with precipitation; 17 cloudy days;
air humidity 84%; 16 millimeters of precipitation (3% of annual average); Wind north-easterly 4.6 Meters per second; Water temperature +15°