Kocaeli, Turkey Weather

  1. Kocaeli, Turkey Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Kocaeli over the next 12 hours
  7. Temperature and possibility of rain in Kocaeli in the coming days
  8. Rainfall in Kocaeli in the coming days
  9. Kocaeli Weather Summary
  10. Weather averages by month
  11. Kocaeli's weather
  12. Frequently asked questions
  13. Comments
Kocaeli, Weather
(Photo by Emre on Unsplash)

Current conditions

Updated:
15°C
59.0°F
°C °F

Condition: Partly Cloudy

Pressure: 959 hPa

Feel like: 15 °C

Temperature: 15°C

Cloud: 45%

Humidity: 86%

Wind: SW - 3 km/h

Visibility: 29.94 km

Weather forecast

Wed
23 Sep
7°C / 18°C
Fog
Thu
24 Sep
9°C / 19°C
Fog
Fri
25 Sep
7°C / 19°C
Fog
Sat
26 Sep
9°C / 19°C
Partly Cloudy
Sun
27 Sep
13°C / 19°C
Partly Cloudy
Hourly forecast today:
00:00 AM
12° / 15°
12° / 15°
Partly Cloudy
86% 11 km/h
01:00 AM
12° / 14°
12° / 14°
Partly Cloudy
84% 13 km/h
02:00 AM
12° / 15°
12° / 15°
Overcast
83% 20 km/h
03:00 AM
12° / 14°
12° / 14°
Overcast
84% 16 km/h
04:00 AM
12° / 14°
12° / 14°
Overcast
86% 12 km/h
05:00 AM
12° / 15°
12° / 15°
Overcast
83% 13 km/h
06:00 AM
13° / 17°
13° / 17°
Overcast
75% 13 km/h
07:00 AM
14° / 17°
14° / 17°
Overcast
82% 25 km/h
08:00 AM
15° / 17°
15° / 17°
Slight Rain Showers
87% 24 km/h
09:00 AM
15° / 16°
15° / 16°
Slight Thunderstorm
89% 28 km/h
10:00 AM
14° / 15°
14° / 15°
Slight Rain Showers
92% 33 km/h

30 Day Averages and Extremes

  • Average high 19.63°C
  • Average low 11.97°C
  • Hottest day 26°C (11 September 2026)
  • Coldest day 0°C (05 October 2026)
  • Average humidity 76.97%
  • Days with precipitation 17 days
  • Highest precipitation 62 mm (22 September 2026)

Yesterday's Data

  • Max: 17°C
  • Min: 13°C
  • Total Precipitation: 7 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

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 cool weather in Kocaeli, with temperatures between 10ºC to 13ºC (50.0ºF to 55.4ºF), you should consider wearing:
- Casual shoes or sneakers
- Light jacket or cardigan
- Knit hat (optional for cooler mornings)
- Light scarf or wrap

Temperature

Early
12°C / 14°C
Morning
15°C / 16°C
Afternoon
12°C / 14°C
Evening
12°C / 13°C

Air quality

Moderate

Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals

  • CO2 444
  • CO 174
  • NH3 10
  • NO2 22
  • O3 33
  • PM10 23
  • PM25 19
  • SO2 8
  • CH4 1,409

Sunrise / Sunset

03:48
15:56