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Kocaeli Province

Kocaeli Province Sea Temperature

This page provides detailed information about the water temperature in Kocaeli Province, Turkey. All countries, cities and resorts on the coast. The range of sea temperatures for today. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Sea Temperature

7.9°C

minimal

8.6°C

average

9.0°C

maximum

Graph of Sea Temperature Changes in Kocaeli Province Over the Last 60 Days

Water temperature in the Kocaeli Province by month

Month	Minimum	Maximum
January	7°C	13°C
February	6°C	11°C
March	6°C	11°C
April	7°C	16°C
May	12°C	20°C
June	16°C	26°C
July	21°C	29°C
August	23°C	28°C
September	20°C	27°C
October	14°C	24°C
November	10°C	21°C
December	7°C	16°C

The Warmest Places on the Seaside in Kocaeli Province Today

9°C

Eskihisar

9°C

Arif Hoca

9°C

Korfez

9°C

Gebze

9°C

Ulasli Yavuz Sultan Selim

9°C

Kisladuzu

List of All Coastal Cities in Kocaeli Province

Seas and Oceans that Border Kocaeli Province

Water Temperature in Kocaeli Province: General Trends and Swimming Opportunities

Original name of the region: Kocaeli

Kocaeli Province, located in the northwestern part of Turkey, along the coast of the Sea of Marmara, experiences a relatively mild climate compared to other coastal regions. During the summer months, the water temperature along the Kocaeli coast typically ranges from 22°C to 25°C (72°F to 77°F), providing pleasant conditions for swimming and other water activities. This period, from June to August, is when the region is most popular among visitors looking to enjoy the warmer sea temperatures.

In early autumn, from September to October, the water remains warm, with temperatures ranging between 20°C and 23°C (68°F to 73°F). This makes it a great time for swimming, as the weather is still comfortable, and the sea retains much of the warmth accumulated during the summer months. As winter sets in, the water temperature begins to drop, reaching around 12°C to 15°C (54°F to 59°F) in November and December. While not ideal for swimming, these cooler temperatures attract fewer tourists, offering a quieter, more relaxed experience along the coast.

By spring, from March to May, the water temperature in Kocaeli rises gradually. In March, it can still be relatively chilly, ranging from 8°C to 12°C (46°F to 54°F), but by May, the water reaches a more comfortable range of 15°C to 18°C (59°F to 64°F), signaling the start of the warmer swimming season. While still cool for some, it’s an excellent time for those seeking a quieter, less crowded coastal experience before the peak summer months.

Geographical Location of Kocaeli Province

Frequently Asked Questions About Kocaeli Province and its Water Temperatures

What is the current sea temperature on the coast of Kocaeli Province in Turkey?

The sea temperature today on the coast of Kocaeli Province ranges from 46°F (7.9°C) in Kefken Island to 48°F (9.0°C) in Eskihisar.

When does the sea in Kocaeli Province in Turkey reach a comfortable swimming temperature?

In Kocaeli Province (Turkey) the sea temperature can reach 70°F (21°C) in June, July, August, September, and October. It should be noted that the mentioned values apply to the warmest point of the region. In other areas of Kocaeli Province, the values may vary.

What are the most popular seaside resorts in Kocaeli Province?

The most popular places on the coast of Kocaeli Province (Turkey), based on our visitors' interest in the water temperature, are cities Kefken Island, Izmit, Gebze, Cebeci, and Golcuk.

Which seas and oceans does the Kocaeli Province have access to?

Kocaeli Province (Turkey) has access to the seas: Sea of Marmara, and Black Sea.