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: Slight Rain
Pressure: 967 hPa
Feel like: 6 °C
Temperature: 8°C
Cloud: 98%
Humidity: 94%
Wind: N - 14 km/h
Visibility: 1.34 km
30 Day Averages and Extremes
- Average high 13.73°C
- Average low 7.7°C
- Hottest day 22°C (21 October 2026)
- Coldest day 0°C (18 November 2026)
- Average humidity 82.27%
- Days with precipitation 24 days
- Highest precipitation 69 mm (03 November 2026)
Yesterday's Data
- Max: 9°C
- Min: 5°C
- Total Precipitation: 4 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 5ºC to 8ºC (41.0ºF to 46.4ºF), you should wear:
- Scarf to protect the neck area
- Warm jacket or medium-weight coat
- Hat and gloves, particularly for early mornings or evenings
- Layered clothing (such as a thermal shirt under a sweater)
Temperature
Air quality
Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals
- CO2 456
- CO 171
- NH3 0
- NO2 2
- O3 44
- PM10 7
- PM25 5
- SO2 0
- CH4 1,415