Lake Küçükçekmece — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Küçükçekmece, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Küçükçekmece today is 19.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| OCT 3 | 21.5°C | 19.0°C | |
| OCT 4 | 21.3°C | 19.0°C | |
| OCT 5 | 21.2°C | 19.0°C | |
| OCT 6 | 21.1°C | 19.0°C | |
| OCT 7 | 20.9°C | 19.0°C | |
| OCT 8 | 20.7°C | 19.0°C | |
| OCT 9 | 20.5°C | 19.0°C | |
| OCT 10 | 19.9°C | 19.0°C | |
| OCT 11 | 19.0°C | 19.8°C | |
| OCT 12 | 19.0°C | 19.7°C | |
| OCT 13 | 19.0°C | 19.7°C | |
| OCT 14 | 19.0°C | 19.6°C | |
| OCT 15 | 19.0°C | 19.6°C | |
| OCT 16 | 19.0°C | 19.6°C | |
| OCT 17 | 19.0°C | 19.5°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 6°C | 10°C | 13°C |
| February | 6°C | 10°C | 13°C |
| March | 7°C | 13°C | 17°C |
| April | 11°C | 16°C | 20°C |
| May | 12°C | 19°C | 26°C |
| June | 18°C | 23°C | 28°C |
| July | 20°C | 25°C | 30°C |
| August | 21°C | 26°C | 32°C |
| September | 18°C | 23°C | 28°C |
| October | 14°C | 19°C | 22°C |
| November | 11°C | 15°C | 19°C |
| December | 6°C | 11°C | 15°C |
Lake Küçükçekmece: Water Temperature by Location
Lake Küçükçekmece: Weather Forecast
October 11
October 12
October 13
October 14
October 15
Location & Local Information
Lake Küçükçekmece (Küçükçekmece Gölü) is a shallow, brackish lagoon on the European side of Istanbul whose surface temperature varies with the seasons and local weather. In winter the water typically cools to roughly 6–12 °C (43–54 °F). Spring sees a gradual rise to about 10–18 °C (50–64 °F) as sunlight and river inflows warm the lagoon. In summer, especially in calm, sunny periods, surface temperatures commonly reach 20–26 °C (68–79 °F) and can occasionally climb into the upper 20s °C (around 82 °F) on very hot days. Autumn brings cooling back toward roughly 12–20 °C (54–68 °F) as winds and lower air temperatures dominate.
Despite these temperatures, swimming is generally not encouraged across much of the lake. Küçükçekmece has long been affected by urban runoff, industrial and sewage discharges and periodic algal blooms, which degrade water quality and ecological status; for that reason authorities have at times restricted bathing and recreational use. Local factors such as shallow depths, variable currents near the connecting channel to the Sea of Marmara, and occasional contamination pockets mean that even when temperatures are comfortable, swimming is often inadvisable unless undertaken in officially sanctioned, monitored areas with confirmed water-quality testing.