Kocaeli, Turkey Weather
- Kocaeli, Turkey Weather
- Current conditions
- Weather forecast
- Averages and extremes
- Yesterday's Data
- Temperature and possibility of rain in Kocaeli over the next 12 hours
- Temperature and possibility of rain in Kocaeli in the coming days
- Rainfall in Kocaeli in the coming days
- Kocaeli Weather Summary
- Weather averages by month
- Kocaeli's weather
- Frequently asked questions
- Comments
Current conditions
Condition: Partly Cloudy
Pressure: 966 hPa
Feel like: 3 °C
Temperature: 5°C
Cloud: 73%
Humidity: 86%
Wind: N - 2 km/h
Visibility: 33.2 km
30 Day Averages and Extremes
- Average high 14.13°C
- Average low 7.8°C
- Hottest day 22°C (22 October 2026)
- Coldest day 0°C (08 November 2026)
- Average humidity 80.17%
- Days with precipitation 26 days
- Highest precipitation 66 mm (03 November 2026)
Yesterday's Data
- Max: 8°C
- Min: 4°C
- Total Precipitation: 0 mm
Temperature and possibility of rain in Kocaeli over the next 12 hours
Temperature and possibility of rain in Kocaeli in the coming days
Rainfall in Kocaeli in the coming days
Kocaeli Climate Summary
Kocaeli features a Mediterranean, hot summer (Köppen classification: Csa), with an average annual temperature of 16.53ºC (61.75ºF), which is about 1.57% higher than the national average for Turkey. Annually, the city experiences approximately 91.34 millimeters (3.6 inches) of rainfall, spread across 140.55 rainy days, accounting for 38.51% of the year.
| Longitude | 40.8532704 |
| Latitude | 29.8815203 |
| Yearly high temperature | 19.7ºC (67.46ºF) |
| Yearly low temperature | 10.4ºC (50.72ºF) |
| Hottest month | September 26.38ºC (79.48ºF) |
| Coldest month | January 2.38ºC (36.28ºF) |
| Yearly precip | 91.34mm (3.6in) |
| Days with rainfall | 140.55 days (38.51%) |
| Driest month | August (68.79%) |
| Wettest month | January (79.7%) |
Weather averages by month
| Month | High / Low (°C) | Rain |
|---|---|---|
| January | 8.63° / 2.38° | 15.82 days |
| February | 11.04° / 3.82° | 14.73 days |
| March | 13.92° / 5.15° | 14.27 days |
| April | 18.23° / 7.31° | 12.55 days |
| May | 23.18° / 11.59° | 14.18 days |
| June | 27.12° / 15.59° | 12.91 days |
| July | 29.59° / 17.74° | 6.45 days |
| August | 29.91° / 18.31° | 5.64 days |
| September | 26.38° / 16.18° | 9.64 days |
| October | 20.67° / 12.44° | 11.45 days |
| November | 16.68° / 9.3° | 9.09 days |
| December | 11.02° / 5.0° | 13.82 days |
Kocaeli's weather
- Istanbul
- Bursa
- Diyarbakır
- Ankara
- Gaziantep
- İzmir
- Adana
- Konya
- Malatya
- Antalya
- Eskişehir
- Kayseri
- Uşak
- Yozgat
- Artvin
- Gümüşhane
- Muğla
- Isparta
- Afyonkarahisar
- Nevşehir
- Giresun
- Edirne
- Sinop
- Muş
- Kilis
- Bartın
- Çankırı
- Kars
- Elazığ
- Batman
- Bitlis
- Ardahan
- Balıkesir
- Bolu
- Burdur
- Çorum
- Düzce
- Erzurum
- Hakkâri
- Hatay
- Iğdır
- Kahramanmaraş
- Karabük
- Kastamonu
- Kırıkkale
- Kırklareli
- Kırşehir
- Mersin
- Niğde
- Ordu
- Rize
- Samsun
- Şanlıurfa
- Siirt
- Şırnak
- Tekirdağ
- Tokat
- Trabzon
- Tunceli
- Van
- Yalova
- Zonguldak
- Sivas
- Ağrı
- Aksaray
- Bayburt
- Bilecik
- Manisa
- Osmaniye
- Kütahya
- Adıyaman
- Aydın
- Çanakkale
- Erzincan
- Karaman
- Bingöl
- Amasya
- Denizli
- Mardin
- Sakarya
Frequently asked questions
1. What is the hottest month in Kocaeli?
September has the highest average monthly temperature (daily mean of 26.38ºC) and January are the coolest (daily mean of 2.38ºC).
2. What should I wear in Kocaeli today?
For today's cold weather in Kocaeli, with temperatures ranging from 4ºC to 7ºC (39.2ºF to 44.6ºF), you should wear:
- Closed-toe shoes or boots
- Layered clothing (such as a thermal shirt under a sweater)
- Scarf to protect the neck area
- Hat and gloves, particularly for early mornings or evenings
Temperature
Air quality
Satisfactory air quality, minimal pollution, low risk
- CO2 445
- CO 142
- NH3 2
- NO2 2
- O3 66
- PM10 3
- PM25 2
- SO2 1
- CH4 1,398