Reference data analysis
What the year comparison shows for Lake Lugano
Typical low point
270.42 m a.s.l.
February 16
Typical high point
270.56 m a.s.l.
June 13
Typical range
15 cm
Difference between daily medians
In the 1991-2020 reference period, Lake Lugano's seasonal median is lowest on February 16 at 270.42 m a.s.l. and highest on June 13 at 270.56 m a.s.l.. The difference between these typical points is 15 cm. This describes the average seasonal cycle, not the largest individual fluctuation.
The 2026 curve currently contains 265 calendar days. On September 22 it shows 270.41 m a.s.l., which is 5 cm below that calendar day's median of 270.47 m a.s.l.. Compared with the same calendar day in 2025, the value is 36 cm lower.
Within the 1991-2020 reference period, the envelope reaches its highest value of 272.07 m a.s.l. on November 27 and its lowest value of 270.03 m a.s.l. on October 20. These are extremes of the displayed reference period, not all-time records.
The analysis uses the water-level series from Melide. Matching calendar days are compared, and the median is the middle value of the reference years. This classification does not replace flood warnings or local safety information.