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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

25.1°C
Today
23.9°C
Yesterday
22.7°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 25.1°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 May 30 to June 30

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUN 2322.7°C19.1°C
JUN 2423.4°C19.1°C
JUN 2523.7°C19.1°C
JUN 2623.7°C19.1°C
JUN 2723.8°C19.1°C
JUN 2823.8°C19.1°C
JUN 2923.9°C19.1°C
JUN 3025.1°C19.1°C
JUL 118.0°C24.7°C
JUL 218.0°C24.4°C
JUL 318.0°C24.0°C
JUL 418.0°C23.7°C
JUL 518.0°C23.3°C
JUL 618.0°C23.0°C
JUL 718.0°C22.6°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°C18°C23°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 1

° / °
overcast
rain: 45% | wind:

July 2

° / °
overcast
rain: 52% | wind:

July 3

° / °
partly cloudy
rain: 3% | wind:

July 4

° / °
slight rain showers
rain: 0% | 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 25.1°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 - 26°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.