Average annual temperature is 14.1 °C
Absolute maximum temperature: 39.3 °C
Absolute minimum temperature: -5.6 °C
Number of sunny days: 150 days
Number of rainy days: 208 days
Number of snow days: 7 days
Look at detailed online map of Kocaeli
* Weather data for Kocaeli Turkey is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 18.3 | 21.0 | 20.8 | 22.9 | 26.4 | 27.3 | 39.3 | 36.1 | 29.9 | 27.7 | 26.9 | 19.7 |
| Average daytime temperature (°C) | 11.5 | 8.9 | 12.0 | 15.4 | 17.9 | 22.7 | 28.1 | 29.1 | 24.7 | 21.2 | 16.3 | 12.8 |
| Average temperature (°C) | 7.2 | 5.0 | 7.8 | 10.9 | 13.7 | 18.5 | 22.9 | 23.9 | 20.1 | 16.7 | 12.3 | 9.1 |
| Average night temperature (°C) | 3.9 | 1.7 | 4.4 | 7.3 | 10.4 | 15.0 | 17.9 | 19.8 | 16.5 | 12.7 | 8.6 | 5.8 |
| Absolute minimum temperature (°C) | -3.6 | -5.6 | -4.9 | 2.5 | 6.4 | 12.3 | 14.9 | 17.5 | 13.9 | 8.4 | -0.1 | 0.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.5 | 6.6 | 5.1 | 7.8 | 8.1 | 11.4 | 12.4 | 11.4 | 10.9 | 8.3 | 5.8 | 5.4 |
| Precipitation (mm) | 28 | 94 | 181 | 162 | 118 | 121 | 49 | 26 | 83 | 96 | 226 | 127 |
| Sunny days | 13 | 9 | 7 | 5 | 6 | 13 | 19 | 19 | 15 | 18 | 7 | 19 |
| Rainy days | 16 | 14 | 24 | 25 | 25 | 17 | 12 | 12 | 15 | 13 | 23 | 12 |
| Snow days | 2 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Kocaeli during the most sunny months:
The largest precipitation sum in Kocaeli is at