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Florence — Current Water Temperature, Annual Trends and Forecast

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

Arno River, Italy
Arno River, Italy © By Hagai Agmon-Snir, CC BY-SA 4.0

Current Water Temperature

27.1°C
Today
27.6°C
Yesterday
25.0°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 Florence today is 27.1°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 79°F (26°C) to 82°F (28°C). This is very warm water, allowing for extended stays without any discomfort. Swimming in these conditions will be particularly enjoyable, making it the ideal temperature range for those who want to relax in the sea. Additionally, water in this temperature range is suitable for children and elderly people, as it is comfortable for prolonged stays. 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 21 to July 22

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUL 1527.4°C20.7°C
JUL 1627.4°C20.7°C
JUL 1727.4°C20.7°C
JUL 1827.6°C20.7°C
JUL 1927.6°C20.7°C
JUL 2027.6°C20.7°C
JUL 2127.4°C20.7°C
JUL 2320.7°C26.8°C
JUL 2420.7°C26.5°C
JUL 2520.7°C26.1°C
JUL 2620.7°C25.8°C
JUL 2720.7°C25.5°C
JUL 2820.7°C25.2°C
JUL 2920.7°C24.9°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
January4°C8°C10°C
February4°C8°C10°C
March7°C10°C13°C
April9°C13°C17°C
May9°C14°C20°C
June13°C19°C26°C
July14°C21°C28°C
August15°C19°C24°C
September13°C18°C22°C
October10°C14°C17°C
November6°C9°C13°C
December4°C8°C10°C

Florence: Weather Forecast

July 22

° / °
partly cloudy
rain: 0% | wind:

July 23

° / °
overcast
rain: 45% | wind:

July 24

° / °
partly cloudy
rain: 5% | wind:

July 25

° / °
slight rain showers
rain: 51% | wind:

July 26

° / °
slight rain showers
rain: 83% | wind:

July 27

° / °
fog
rain: 45% | wind:

Location & Local Information

Florence (Firenze) sits on the Arno in the heart of Tuscany, but the nearest recreational lakes — above all Lake Bilancino to the north — are where visitors head for lake swimming. Water temperatures vary by season and by the lake’s size and depth: in spring you can expect roughly 8–16 °C (46–61 °F), summer highs commonly reach 20–28 °C (68–82 °F) on shallower, sun-warmed basins, autumn cools back to about 12–18 °C (54–64 °F), and winter surface temperatures often fall to around 4–8 °C (39–46 °F). Smaller, shallower lakes warm faster in summer but also cool quickly in shoulder seasons.

Swimming is possible at several lakes near Florence, but conditions and rules differ. Many reservoirs and recreational lakes open supervised swimming areas in summer for safety and because water quality is monitored; other lakes are used for drinking water supply or are protected habitats, so swimming can be restricted or prohibited. Even where swimming is allowed, signage, seasonal lifeguards and local water-quality updates determine safe access. Visitors should follow posted rules and check current local information before entering the water.

Nearby Locations

Frequently Asked Questions

What is the current water temperature in Florence?
Water Temperature in Florence today is 27.1°C.
What is the water temperature in Florence during the summer months?
The water temperature in Florence in summer fluctuates in the range of 13°C - 28°C.
Is it possible to swim in Florence (Italy) in Arno and what are the possibilities for this?
Officially bathing in the Arno through Florence is prohibited and generally discouraged because of safety risks, boat traffic and variable water quality, so people who want to swim instead use supervised public pools, nearby lakes or reservoirs, join organized or guided wild‑swimming outings outside the historic center, or take part in occasional supervised river events.