In May 2026, Basel's outdoor pools had an average water temperature of 20.1 °C, ranging from 7.0 °C to 31.0 °C, with 11 warm days, 13 cool days, and 6 heat days. This represented a 3.1 percent increase from the 19.5 °C average recorded in May 2025.
In May 2026, Basel’s outdoor pools — Bachgraben Familienbad, Bachgraben Sportbad, Eglisee Familienbad, Eglisee Frauenbad, Hallenbad Eglisee, St. Jakob Familienbad, and St. Jakob Sportbad — recorded an overall average water temperature of 20.1 °C, with readings ranging from a low of 7.0 °C at Hallenbad Eglisee on 2026-05-14 to a high of 31.0 °C at Eglisee Frauenbad on 2026-05-24. Across all pools, there were 11 warm days with maximum water temperatures above 25 °C, 13 cool days below 18 °C, and 6 heat days exceeding 30 °C. The outdoor air temperature averaged 16.1 °C, with a maximum of 32.5 °C, and featured 11 days above 25 °C, 6 days above 30 °C, and 13 days below 20 °C. Compared to May 2025, the overall average water temperature rose from 19.5 °C to 20.1 °C, an increase of approximately 3.1 percent.
🤖 This text was generated with the assistance of AI. All quantitative statements are derived directly from the dataset listed under Data Source.