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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

13.7°C
Today
13.8°C
Yesterday
12.3°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 13.7°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 June 2 to July 3

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUN 2612.3°C14.0°C
JUN 2712.7°C14.0°C
JUN 2813.1°C14.0°C
JUN 2912.9°C14.0°C
JUN 3013.7°C14.0°C
JUL 113.6°C15.0°C
JUL 213.8°C15.0°C
JUL 313.7°C15.0°C
JUL 415.0°C13.8°C
JUL 515.0°C13.8°C
JUL 615.0°C13.9°C
JUL 715.0°C14.0°C
JUL 815.0°C14.0°C
JUL 915.0°C14.1°C
JUL 1015.0°C14.2°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

July 4

° / °
partly cloudy
rain: 3% | wind:

July 5

° / °
overcast
rain: 0% | wind:

July 6

° / °
overcast
rain: 0% | wind:

July 7

° / °
overcast
rain: 35% | wind:

July 8

° / °
overcast
rain: 35% | wind:

July 9

° / °
overcast
rain: 24% | 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 13.7°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.