Kastraki Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Kastraki Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Kastraki Lake today is 20°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 |
|---|---|---|---|
| SEP 13 | 20.7°C | 26.0°C | |
| SEP 14 | 21.0°C | 26.0°C | |
| SEP 15 | 20.5°C | 26.0°C | |
| SEP 16 | 20.7°C | 26.0°C | |
| SEP 17 | 20.6°C | 26.0°C | |
| SEP 18 | 20.2°C | 26.0°C | |
| SEP 19 | 20.2°C | 26.0°C | |
| SEP 20 | 19.6°C | 26.0°C | |
| SEP 21 | 26.0°C | 20.3°C | |
| SEP 22 | 26.0°C | 20.6°C | |
| SEP 23 | 26.0°C | 20.9°C | |
| SEP 24 | 26.0°C | 21.2°C | |
| SEP 25 | 26.0°C | 21.5°C | |
| SEP 26 | 26.0°C | 21.8°C | |
| SEP 27 | 26.0°C | 22.1°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 | 7°C | 11°C | 14°C |
| February | 7°C | 11°C | 14°C |
| March | 7°C | 11°C | 14°C |
| April | 11°C | 15°C | 19°C |
| May | 15°C | 21°C | 26°C |
| June | 20°C | 25°C | 30°C |
| July | 22°C | 27°C | 33°C |
| August | 23°C | 28°C | 34°C |
| September | 21°C | 26°C | 32°C |
| October | 14°C | 19°C | 22°C |
| November | 11°C | 15°C | 19°C |
| December | 8°C | 13°C | 17°C |
Kastraki Lake: Water Temperature by Location
Kastraki Lake: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Kastraki Lake (Λίμνη Καστρακίου) typically exhibits a wide seasonal variation in surface water temperature. In summer months the surface often warms to roughly 22–27 °C (72–81 °F) on sunny, calm days, while late summer and early autumn values commonly sit around 20–24 °C (68–75 °F). Spring temperatures are cooler, generally in the 10–18 °C range (50–64 °F) as the water recovers from winter, and winter surface readings frequently drop to about 4–10 °C (39–50 °F). As with many reservoirs, deeper layers remain substantially colder than the surface, and local weather, inflows from rivers and recent dam operations can shift these numbers by several degrees.
Swimming at Kastraki Lake is practiced by some locals in accessible bays, but it is not uniformly encouraged or formally managed as a public beach. Areas close to the dam or intake structures are often subject to restrictions for safety and operational reasons; sudden releases, strong currents, fluctuating water levels and submerged hazards make parts of the reservoir hazardous. Water quality may also vary because the lake serves irrigation and hydropower functions. For those considering a swim, it is advisable to heed local signage and authorities, choose sheltered shallows away from infrastructure, and be aware that there are typically no lifeguards or formal facilities.