Lake Avernus — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Avernus, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Avernus today is 24.7°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 | 25.7°C | 27.0°C | |
| SEP 14 | 25.7°C | 27.0°C | |
| SEP 15 | 25.5°C | 27.0°C | |
| SEP 16 | 25.4°C | 27.0°C | |
| SEP 17 | 25.2°C | 27.0°C | |
| SEP 18 | 25.1°C | 27.0°C | |
| SEP 19 | 25.0°C | 27.0°C | |
| SEP 20 | 24.9°C | 27.0°C | |
| SEP 21 | 27.0°C | 24.8°C | |
| SEP 22 | 27.0°C | 24.9°C | |
| SEP 23 | 27.0°C | 25.0°C | |
| SEP 24 | 27.0°C | 25.2°C | |
| SEP 25 | 27.0°C | 25.3°C | |
| SEP 26 | 27.0°C | 25.4°C | |
| SEP 27 | 27.0°C | 25.5°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 | 6°C | 10°C | 13°C |
| February | 8°C | 12°C | 15°C |
| March | 9°C | 13°C | 17°C |
| April | 11°C | 15°C | 19°C |
| May | 16°C | 21°C | 26°C |
| June | 22°C | 28°C | 34°C |
| July | 23°C | 28°C | 34°C |
| August | 24°C | 29°C | 34°C |
| September | 22°C | 27°C | 33°C |
| October | 16°C | 20°C | 23°C |
| November | 11°C | 15°C | 19°C |
| December | 9°C | 12°C | 14°C |
Lake Avernus: Water Temperature by Location
Lake Avernus: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Lake Avernus (Italian: Lago d'Averno) is a small, shallow volcanic crater lake in the Campi Flegrei near Pozzuoli, and its water temperature reflects both its modest depth and the Mediterranean climate. Typical seasonal surface temperatures range roughly from about 8–12 °C (46–54 °F) in winter, through spring values near 12–18 °C (54–64 °F), to summer highs commonly around 20–26 °C (68–79 °F), then cooling again to roughly 13–19 °C (55–66 °F) in autumn. Because the basin is shallow and sheltered, it can warm fairly quickly in prolonged sunny spells but also cool rapidly during cold, overcast periods; local winds and groundwater inputs can further influence short-term variations.
Swimming at Lake Avernus is not a routine recreational activity and may be limited or discouraged. Factors include water quality concerns such as algal growth and organic material in a small lake, the presence of volcanic gases in the broader Campi Flegrei area, safety issues with steep or unstable banks, and the lake’s archaeological and natural value that invites protective measures. Some areas may be off-limits by local authorities, so visitors are advised to heed signage and check with municipal or park officials before considering entering the water.