Temperatures of Public Outdoor Swimming Pools in Basel, July 2025

August 1, 2025

In July 2025, Basel's outdoor pools experienced water temperatures ranging from 16.0 °C to 32.0 °C, with an average of 24.0 °C, while outdoor air temperatures averaged 20.2 °C, peaking at 35.7 °C. This period saw a slight increase in average pool temperatures compared to historical data, indicating a generally warmer month.

In July 2025, across Basel's outdoor pools—Bachgraben Familienbad, Bachgraben Sportbad, Eglisee Familienbad, Eglisee Frauenbad, Hallenbad Eglisee, St. Jakob Familienbad, and St. Jakob Sportbad—water temperatures ranged from 16.0 °C to 32.0 °C, with an average of 24.0 °C. The warmest reading was 32.0 °C at Eglisee Frauenbad on 2025-07-20, while the lowest was 16.0 °C at Eglisee Familienbad on 2025-07-09.

Outdoor air temperatures averaged 20.2 °C, peaking at 35.7 °C. There were 17 warm days with temperatures exceeding 25 °C, 2 cool days below 20 °C, and 4 heat days surpassing 30 °C. Compared to historical data, the average pool temperature showed a slight increase, reflecting a warmer month overall.

Figure 1: Timeseries of Temperatures in Outdoor Pools in July 2025

Data source: Zeitreihe der Temperaturen der Gartenbäder
Additional resources: Further information on swimming pools

🤖 This text was generated with the assistance of AI. All quantitative statements are derived directly from the dataset listed under Data Source.