Demirköprü Dam — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Demirköprü Dam, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Demirköprü Dam today is 19.1°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 4 | 20.8°C | 15.0°C | |
| OCT 5 | 20.8°C | 15.0°C | |
| OCT 6 | 20.3°C | 15.0°C | |
| OCT 7 | 20.3°C | 15.0°C | |
| OCT 8 | 20.2°C | 15.0°C | |
| OCT 9 | 20.0°C | 15.0°C | |
| OCT 10 | 19.7°C | 15.0°C | |
| OCT 11 | 19.1°C | 15.0°C | |
| OCT 12 | 15.0°C | 18.9°C | |
| OCT 13 | 15.0°C | 18.7°C | |
| OCT 14 | 15.0°C | 18.5°C | |
| OCT 15 | 15.0°C | 18.3°C | |
| OCT 16 | 15.0°C | 18.1°C | |
| OCT 17 | 15.0°C | 17.9°C | |
| OCT 18 | 15.0°C | 17.7°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 | 5°C | 9°C | 11°C |
| February | 5°C | 8°C | 12°C |
| March | 5°C | 8°C | 12°C |
| April | 9°C | 12°C | 15°C |
| May | 12°C | 17°C | 21°C |
| June | 16°C | 20°C | 25°C |
| July | 18°C | 22°C | 27°C |
| August | 18°C | 23°C | 28°C |
| September | 17°C | 21°C | 26°C |
| October | 11°C | 15°C | 18°C |
| November | 9°C | 13°C | 16°C |
| December | 7°C | 10°C | 14°C |
Demirköprü Dam: Weather Forecast
October 11
October 12
October 13
October 14
October 15
Location & Local Information
Demirköprü Dam reservoir in the Manisa region typically shows pronounced seasonal shifts in surface water temperature. In winter the lake surface often cools to roughly 6–12 °C (43–54 °F) depending on air temperatures and inflow, while spring brings a gradual warming to about 12–20 °C (54–68 °F) as sunlight and runoff increase. By summer the shallow areas and surface layers commonly reach 22–28 °C (72–82 °F) on warm days, with the warmest readings in late July and August; autumn sees a steady decline, typically to 14–20 °C (57–68 °F) before winter cooling resumes. Local factors such as reservoir depth, river inflow, wind mixing and seasonal stratification all influence these ranges, so measured temperatures can vary from year to year.
Swimming at Demirköprü is a mixed issue: while locals sometimes swim in the reservoir during the warm months when surface temperatures are pleasant, official access may be limited or discouraged for reasons of safety, water-use priorities and water quality. The dam serves irrigation and hydropower functions, leading to fluctuating water levels, underwater hazards and boat traffic; authorities may also restrict bathing to protect drinking or irrigation supplies. Anyone considering swimming should check current local rules, observe posted signs and be mindful of changing conditions before entering the water.