Lake Nemi — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Nemi, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Nemi today is 23.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 | 24.7°C | 22.0°C | |
| SEP 14 | 24.6°C | 22.0°C | |
| SEP 15 | 24.0°C | 22.0°C | |
| SEP 16 | 23.9°C | 22.0°C | |
| SEP 17 | 23.9°C | 22.0°C | |
| SEP 18 | 23.7°C | 22.0°C | |
| SEP 19 | 23.6°C | 22.0°C | |
| SEP 20 | 23.6°C | 22.0°C | |
| SEP 21 | 22.0°C | 23.4°C | |
| SEP 22 | 22.0°C | 23.4°C | |
| SEP 23 | 22.0°C | 23.3°C | |
| SEP 24 | 22.0°C | 23.2°C | |
| SEP 25 | 22.0°C | 23.1°C | |
| SEP 26 | 22.0°C | 23.1°C | |
| SEP 27 | 22.0°C | 23.0°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 | 8°C | 12°C | 15°C |
| April | 11°C | 15°C | 19°C |
| May | 14°C | 20°C | 25°C |
| June | 17°C | 22°C | 27°C |
| July | 19°C | 24°C | 29°C |
| August | 20°C | 25°C | 30°C |
| September | 17°C | 22°C | 27°C |
| October | 13°C | 18°C | 21°C |
| November | 10°C | 14°C | 18°C |
| December | 5°C | 9°C | 12°C |
Lake Nemi: Water Temperature by Location
Lake Nemi: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Lake Nemi, a small volcanic lake in the Alban Hills south of Rome, tends to be relatively cool for much of the year due to its modest depth and shaded basin. Typical summer surface temperatures reach roughly 22–26 °C (72–79 °F) from July through early September. In late spring and early autumn the water commonly sits between about 15–20 °C (59–68 °F), while winter months often see temperatures drop to roughly 6–10 °C (43–50 °F). Seasonal swings are moderate compared with larger lakes, but sudden weather changes and cooler nights can lower surface readings, so actual conditions vary day to day.
Swimming at Lake Nemi is generally restricted rather than freely promoted. The lake and its shores lie within protected natural and historical areas, and rules are intended to safeguard the fragile ecosystem, water quality and archaeological heritage associated with ancient Roman sites. For that reason open bathing is typically discouraged or prohibited, though local authorities may permit limited, regulated activities or access from private properties in specific circumstances. Anyone considering a dip should check current municipal regulations and heed signage, as well as account for safety factors like temperature, currents and water quality before entering.