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Lake Sirio — Current Water Temperature, Annual Trends and Forecast

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

Lake Sirio, Italy
Lake Sirio, Italy © By Alessandro Vellere, CC BY-SA 4.0

Current Water Temperature

22.9°C
Today
22.8°C
Yesterday
23.2°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 Sirio today is 22.9°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 31 to August 31

Table of Daily Sea Temperature Data

Date Current Average Forecast
AUG 2423.2°C22.3°C
AUG 2523.2°C22.3°C
AUG 2623.2°C22.3°C
AUG 2722.9°C22.3°C
AUG 2822.8°C22.3°C
AUG 2922.8°C22.3°C
AUG 3022.8°C22.3°C
AUG 3122.9°C22.3°C
SEP 119.0°C22.7°C
SEP 219.0°C22.5°C
SEP 319.0°C22.3°C
SEP 419.0°C22.1°C
SEP 519.0°C21.9°C
SEP 619.0°C21.7°C
SEP 719.0°C21.5°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°C12°C
February4°C8°C11°C
March7°C11°C14°C
April9°C13°C17°C
May10°C15°C21°C
June14°C20°C25°C
July17°C22°C27°C
August17°C22°C28°C
September13°C19°C24°C
October11°C15°C19°C
November6°C11°C14°C
December5°C9°C12°C

Lake Sirio: Water Temperature by Location

Lake Sirio: Weather Forecast

September 1

° / °
overcast
rain: 3% | wind:

September 2

° / °
overcast
rain: 3% | wind:

September 3

° / °
mainly clear
rain: 0% | wind:

September 4

° / °
mainly clear
rain: 0% | wind:

Location & Local Information

Lake Sirio, a small glacial lake in Piedmont, Italy, experiences clear seasonal variation in water temperature. In winter the surface typically drops to about 2–6 °C (36–43 °F), rising through spring to roughly 8–16 °C (46–61 °F) as air temperatures warm. During the bathing season in July and August the lake commonly reaches 20–26 °C (68–79 °F), and lingering warmth into early autumn can keep temperatures around 10–18 °C (50–64 °F). These figures are typical averages: exact conditions depend on weather patterns, wind, and inflows from springs and streams, so temperatures can vary from year to year and even day to day.

Swimming at Lago Sirio is permitted and popular in the warmer months, with public beaches and designated bathing areas where locals and visitors go for recreation. Authorities monitor water quality, which is generally suitable for bathing, and seasonal lifeguard service or signage may be present at managed spots; however swimming restrictions can be imposed temporarily for safety or quality reasons, so it is advisable to heed local notices. Boat traffic and variable depths mean swimmers should stay within marked areas and exercise common-sense precautions for personal safety.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Lake Sirio?
Water Temperature in Lake Sirio today is 22.9°C.
What is the water temperature in Lake Sirio during the summer months?
The water temperature in Lake Sirio in summer fluctuates in the range of 14°C - 28°C.
Is it possible to swim in Lake Sirio (Italy) and what are the possibilities for this?
Yes — Lake Sirio is suitable for swimming, offering designated public and private bathing spots (including a seasonal lido with lifeguards and basic facilities), stretches of shoreline for informal bathing, generally monitored water quality, and the possibility to rent small non‑motorized craft for recreational use.