Bars — İzmit
Climate — İzmit: monthly averages
| Month | Day (max) | Night (min) | Monthly precipitation |
|---|---|---|---|
| January | 20°C | -13°C | 86 mm |
| February | 23°C | -13°C | 66 mm |
| March | 27°C | -6°C | 65 mm |
| April | 29°C | -3°C | 48 mm |
| May | 33°C | 3°C | 51 mm |
| June | 42°C | 9°C | 65 mm |
| July | 41°C | 13°C | 34 mm |
| August | 42°C | 13°C | 38 mm |
| September | 39°C | 8°C | 55 mm |
| October | 36°C | 0°C | 71 mm |
| November | 29°C | -4°C | 63 mm |
| December | 23°C | -9°C | 92 mm |
Long-term model averages for an area of about 50 km — not a forecast; mountains are often cooler. Source: NASA POWER Project (CC BY 4.0) (2001–2025)