Lago d'Iseo water temperature
Lago d'Iseo, Sarnico, Lido Nettuno · Lake
The current water temperature at Lago d'Iseo is 19.7 °C (as of October 14, 2026, source: Università degli Studi di Brescia – gruppo di Idraulica).
Current reading from Boa Trentapassi (13915 m away) – no measurement of its own available.
Lakes stratify in summer: bathing-warm on top, markedly colder a few metres down. Measurements are taken at the surface — right where you swim.
Water quality
EU classification: excellentMeasurement series & statistics
This measurement series includes 332 data points since September 3, 2026.
Lowest recorded value: 19.8 °C on October 14, 2026 · highest value: 25.6 °C on September 4, 2026.
In October, temperatures have ranged between 19.8 °C and 21.9 °C.
The current value is 1.2 °C below the October average of this series.
Nearby waters
More measuring points: Lago d'Iseo
Frequently asked questions
Can you swim at Lago d'Iseo right now?
The current water temperature is 19.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Lago d'Iseo?
Currently 19.7 °C (updated continuously).
How warm is at Lago d'Iseo in October?
In October, the water temperature recently averaged 20.9 °C.
How is the water quality at Lago d'Iseo?
The official classification is: excellent.
