Lake Bolsena — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Bolsena, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Bolsena today is 21°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 | 21.3°C | 21.0°C | |
| JUN 4 | 20.9°C | 21.0°C | |
| JUN 5 | 20.9°C | 21.0°C | |
| JUN 6 | 20.8°C | 21.0°C | |
| JUN 7 | 20.8°C | 21.0°C | |
| JUN 8 | 20.9°C | 21.0°C | |
| JUN 10 | 21.0°C | 21.0°C | |
| JUN 11 | 21.0°C | 21.0°C | |
| JUN 12 | 21.0°C | 21.0°C | |
| JUN 13 | 21.0°C | 21.0°C | |
| JUN 14 | 21.0°C | 21.0°C | |
| JUN 15 | 21.0°C | 21.0°C | |
| JUN 16 | 21.0°C | 21.0°C | |
| JUN 17 | 21.0°C | 21.0°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 | 6°C | 10°C | 13°C |
| February | 6°C | 10°C | 13°C |
| March | 8°C | 12°C | 15°C |
| April | 10°C | 14°C | 18°C |
| May | 12°C | 18°C | 23°C |
| June | 16°C | 21°C | 26°C |
| July | 19°C | 24°C | 29°C |
| August | 19°C | 24°C | 29°C |
| September | 16°C | 21°C | 26°C |
| October | 13°C | 18°C | 21°C |
| November | 9°C | 13°C | 17°C |
| December | 6°C | 10°C | 13°C |
Lake Bolsena: Water Temperature by Location
Lake Bolsena: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Lake Bolsena (Italian: Lago di Bolsena) is a large volcanic freshwater lake in Lazio whose surface temperatures vary noticeably through the year. In winter the surface typically cools to about 4–8 °C (39–46 °F), while spring brings a gradual rise to roughly 10–18 °C (50–64 °F). By summer, especially July and August, lake water commonly warms to 20–28 °C (68–82 °F) in nearshore areas on sunny days, though deep parts remain cooler. In autumn the temperature falls again, ranging broadly from about 12–22 °C (54–72 °F) as the lake loses summer heat. Local weather, wind and depth all influence these values, so conditions can vary from one bay to another.
Swimming in Lago di Bolsena is generally allowed and popular during the warmer months because the lake is freshwater, has a number of public beaches and managed lidos, and usually meets regional bathing-water quality standards. Designated bathing areas may have lifeguards in season, while other spots are unsupervised; boat traffic and colder deep water can pose hazards, so swimmers should prefer marked beaches and exercise caution. Occasional localized algal patches can occur, so checking local advisories before swimming is sensible.