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: Mainly Clear

Pressure: 967 hPa

Feel like: 16 °C

Temperature: 15°C

Cloud: 41%

Humidity: 85%

Wind: NNW - 1 km/h

Visibility: 29.96 km

Weather forecast

Mon
21 Sep
12°C / 18°C
Moderate Rain
Tue
22 Sep
9°C / 13°C
Slight Rain Showers
Wed
23 Sep
8°C / 19°C
Mainly Clear
Thu
24 Sep
9°C / 20°C
Overcast
Fri
25 Sep
11°C / 20°C
Overcast
Hourly forecast today:
05:00 AM
12° / 15°
12° / 15°
Mainly Clear
85% 10 km/h
06:00 AM
13° / 17°
13° / 17°
Mainly Clear
77% 12 km/h
07:00 AM
13° / 19°
13° / 19°
Partly Cloudy
67% 25 km/h
08:00 AM
12° / 20°
12° / 20°
Partly Cloudy
62% 30 km/h
09:00 AM
12° / 20°
12° / 20°
Partly Cloudy
59% 30 km/h
10:00 AM
12° / 21°
12° / 21°
Partly Cloudy
56% 32 km/h
11:00 AM
12° / 21°
12° / 21°
Partly Cloudy
54% 33 km/h
12:00 PM
12° / 21°
12° / 21°
Partly Cloudy
55% 36 km/h
13:00 PM
12° / 21°
12° / 21°
Mainly Clear
55% 37 km/h
14:00 PM
13° / 20°
13° / 20°
Partly Cloudy
63% 38 km/h
15:00 PM
13° / 19°
13° / 19°
Partly Cloudy
69% 37 km/h

30 Day Averages and Extremes

  • Average high 20.5°C
  • Average low 12.7°C
  • Hottest day 30°C (05 September 2026)
  • Coldest day 0°C (03 October 2026)
  • Average humidity 77.37%
  • Days with precipitation 17 days
  • Highest precipitation 61 mm (15 September 2026)

Yesterday's Data

  • Max: 21°C
  • Min: 14°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

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 warm weather in Kocaeli, with temperatures between 20ºC to 23ºC (68.0ºF to 73.4ºF), you might consider wearing:
- T-shirt or short-sleeve blouse
- Shorts or lightweight trousers
- Comfortable sandals or sneakers
- Cotton or linen fabrics

Temperature

Early
12°C / 14°C
Morning
12°C / 20°C
Afternoon
13°C / 19°C
Evening
13°C / 15°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 438
  • CO 168
  • NH3 5
  • NO2 4
  • O3 56
  • PM10 21
  • PM25 17
  • SO2 7
  • CH4 1,380

Sunrise / Sunset

03:46
15:59