Mornos Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Mornos Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Mornos Lake today is 22.1°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 |
|---|---|---|---|
| JUN 3 | 20.8°C | 23.0°C | |
| JUN 4 | 20.8°C | 23.0°C | |
| JUN 5 | 20.8°C | 23.0°C | |
| JUN 6 | 20.8°C | 23.0°C | |
| JUN 7 | 20.8°C | 23.0°C | |
| JUN 8 | 21.5°C | 23.0°C | |
| JUN 10 | 22.1°C | 23.0°C | |
| JUN 11 | 23.0°C | 22.1°C | |
| JUN 12 | 23.0°C | 22.2°C | |
| JUN 13 | 23.0°C | 22.2°C | |
| JUN 14 | 23.0°C | 22.3°C | |
| JUN 15 | 23.0°C | 22.3°C | |
| JUN 16 | 23.0°C | 22.4°C | |
| JUN 17 | 23.0°C | 22.4°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 | 12°C |
| February | 5°C | 9°C | 12°C |
| March | 5°C | 9°C | 12°C |
| April | 9°C | 13°C | 18°C |
| May | 13°C | 19°C | 24°C |
| June | 18°C | 23°C | 28°C |
| July | 20°C | 25°C | 30°C |
| August | 21°C | 26°C | 32°C |
| September | 19°C | 24°C | 29°C |
| October | 12°C | 17°C | 20°C |
| November | 9°C | 13°C | 17°C |
| December | 7°C | 11°C | 14°C |
Mornos Lake: Water Temperature by Location
Mornos Lake: Weather Forecast
June 9
June 10
June 11
June 12
June 13
June 14
Location & Local Information
Mornos Lake (Τεχνητή Λίμνη Μόρνου) is a man-made reservoir in western Greece that supplies drinking water and supports hydroelectric and irrigation needs. Surface water temperatures follow seasonal patterns typical of Mediterranean inland reservoirs and vary with weather, depth and inflow. Typical ranges at the surface are roughly 6–12 °C (43–54 °F) in winter, about 10–18 °C (50–64 °F) in spring, approximately 18–26 °C (64–79 °F) in summer, and around 12–20 °C (54–68 °F) in autumn. Deeper layers remain noticeably cooler year-round, so overall thermal stratification is common in warmer months and can lead to colder bottom temperatures than those at the surface.
Swimming in the Mornos reservoir is generally not permitted because it is an important source of potable water and is managed to protect water quality and infrastructure. Access and activities are regulated by authorities, with restrictions intended to prevent contamination, preserve supply reliability and ensure safety around dam structures. While some people might enter the water informally in secluded spots, such actions are against the rules and can pose legal, health and safety risks; permitted recreational uses are limited and typically controlled by local agencies.