All data are in degrees Fahrenheit

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Water temperature in Isola del Giglio

Detailed information about the current water temperature in Isola del Giglio. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Isola del Giglio now

81.8

°F

August 1, 23:58

Trend:

decreasing

Yesterday:

82.1°F

Tomorrow:

81.7°F

Sunrise:

06:08

Sunset:

20:36

Day Length:

14 h. 28 min.

Isola del Giglio in August

Minimum:

58.2°F

Average:

60.0°F

Maximum:

61.8°F

Sea water temperature in Isola del Giglio today

As of now, in Isola del Giglio, the water temperature is 81.8°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 2.7°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 81.6°F on 2022, while the historical minimum was 76.7°F on 2025.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 81.7°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Isola del Giglio

Date Current Year

actual* / forecast**

last year 10 years average
Jul 18 83.0°F 77.3°F 77.8°F
Jul 19 84.4°F 77.6°F 78.1°F
Jul 20 84.3°F 77.6°F 78.1°F
Jul 21 84.3°F 78.3°F 78.4°F
Jul 22 84.0°F 78.3°F 78.5°F
Jul 23 84.0°F 78.7°F 78.8°F
Jul 24 84.0°F 78.7°F 78.9°F
Jul 25 83.0°F 78.1°F 79.0°F
Jul 26 80.9°F 77.0°F 78.7°F
Jul 27 81.9°F 77.8°F 78.8°F
Jul 28 81.5°F 78.1°F 78.7°F
Jul 29 81.8°F 77.7°F 78.9°F
Jul 30 82.1°F 77.0°F 79.1°F
Jul 31 82.1°F 76.8°F 79.3°F
Aug 1 81.8°F 76.7°F 79.1°F
Aug 2 81.7°F 77.0°F 79.0°F
Aug 3 81.9°F 76.9°F 79.2°F
Aug 4 81.9°F 76.1°F 79.1°F
Aug 5 81.8°F 75.5°F 79.1°F
Aug 6 81.7°F 75.3°F 79.0°F
Aug 7 81.6°F 76.2°F 78.9°F
Aug 8 81.5°F 76.2°F 78.8°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Isola del Giglio by month

In Isola del Giglio, the months July through September offer comfortable swimming conditions, which amounts to 101 swimming days.
The warmest water in Isola del Giglio was recorded on July 19, 2026, reaching a 84.4°F. While the coldest temperature occurred on March 16, 2022, dipping to 55.8°F. The average readings by season are 59.8°F in Winter, 60.8°F in Spring, 76.4°F in Summer, and 70.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Monte Argentario 82.6°F 12mi
Marciana Marina 82.8°F 48mi
San Vincenzo 83.0°F 54mi

* current water temperature in this city

** straight line distance from Isola del Giglio