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 21.6°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 |
|---|---|---|---|
| SEP 13 | 23.2°C | 21.0°C | |
| SEP 14 | 23.3°C | 21.0°C | |
| SEP 15 | 23.0°C | 21.0°C | |
| SEP 16 | 22.8°C | 21.0°C | |
| SEP 17 | 22.7°C | 21.0°C | |
| SEP 18 | 22.5°C | 21.0°C | |
| SEP 19 | 22.3°C | 21.0°C | |
| SEP 20 | 22.1°C | 21.0°C | |
| SEP 21 | 21.0°C | 21.6°C | |
| SEP 22 | 21.0°C | 21.5°C | |
| SEP 23 | 21.0°C | 21.5°C | |
| SEP 24 | 21.0°C | 21.5°C | |
| SEP 25 | 21.0°C | 21.5°C | |
| SEP 26 | 21.0°C | 21.4°C | |
| SEP 27 | 21.0°C | 21.4°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
September 21
September 22
September 23
September 24
September 25
September 26
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.