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Lake of Arno — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in Lake of Arno, trends, monthly ranges and the forecast for the coming days.

Lake of Salarno, Italy
Lake of Salarno, Italy © By Demio22, CC BY-SA 4.0

Current Water Temperature

17.2°C
Today
17.3°C
Yesterday
17.1°C
A Week Ago
Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature in Lake of Arno today is 17.2°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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

From July 13 to August 13

Table of Daily Sea Temperature Data

Date Current Average Forecast
AUG 617.1°C15.0°C
AUG 717.0°C15.0°C
AUG 817.1°C15.0°C
AUG 917.1°C15.0°C
AUG 1017.0°C15.0°C
AUG 1117.3°C15.0°C
AUG 1217.3°C15.0°C
AUG 1415.0°C17.1°C
AUG 1515.0°C17.0°C
AUG 1615.0°C16.9°C
AUG 1715.0°C16.8°C
AUG 1815.0°C16.7°C
AUG 1915.0°C16.5°C
AUG 2015.0°C16.4°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
January0°C0°C3°C
February0°C0°C3°C
March0°C2°C5°C
April1°C5°C9°C
May3°C8°C13°C
June9°C14°C20°C
July10°C15°C21°C
August10°C15°C21°C
September7°C12°C18°C
October3°C7°C10°C
November0°C3°C6°C
December0°C0°C3°C

Lake of Arno: Water Temperature by Location

Lake of Arno: Weather Forecast

August 13

° / °
overcast
rain: 80% | wind:

August 14

° / °
overcast
rain: 100% | wind:

August 15

° / °
slight rain showers
rain: 86% | wind:

August 16

° / °
slight rain showers
rain: 81% | wind:

August 17

° / °
slight thunderstorm
rain: 78% | wind:

Location & Local Information

The so-called Lake of Arno refers to sections of the Arno River in Tuscany where the flow widens into calm, lake-like areas, especially near artificial reservoirs such as those close to La Penna and Levane. These basins collect water from the river and surrounding hills, creating stretches that resemble small lakes. The water temperature in these areas changes significantly with the seasons. In winter, it averages between 5 and 8°C, in spring it rises to 12–16°C, and during summer it reaches 22–26°C, with shallower parts occasionally warmer. In autumn, it cools again to around 14–18°C.

Swimming in the Arno’s lake-like reservoirs is technically possible but regulated. In some sections, swimming is discouraged because of safety and water management purposes, while in others locals occasionally bathe or kayak during summer. The water quality varies depending on rainfall and flow, but it is usually clean enough for recreational use in calmer stretches. Overall, these areas offer scenic natural beauty and refreshing conditions, especially on hot Tuscan days.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Lake of Arno?
Water Temperature in Lake of Arno today is 17.2°C.
What is the water temperature in Lake of Arno during the summer months?
The water temperature in Lake of Arno in summer fluctuates in the range of 9°C - 21°C.
Is it possible to swim in Lake of Arno (Italy) and what are the possibilities for this?
It’s sometimes possible to swim in the Arno basin, but swimming in the Arno River itself—especially through urban stretches like Florence—is generally discouraged or regulated, while nearby lakes, reservoirs and designated bathing areas or water‑sport facilities offer safer, permitted options provided you follow local signage, water‑quality advisories and municipal rules.