Heat warning level 4 hits Sarnen-Lungern
This warning was lifted on 05.08.2026 20:00 CEST and is no longer active.
Summary
A level 4 of 5 heat warning is in effect for Sarnen-Lungern. Persistently high temperatures are placing a marked strain on health and circulation.
What hazard threatens
Persistently high day and night temperatures place a strong strain on circulation and health, especially for the elderly, infants and the sick. The risk of forest and wildfires is also rising in the Sarnen-Lungern region.
Local weather conditions
Measuring station Giswil, 471 m a.s.l., 3 km from the event
29.9 °C
34.6 °C
40 %
Day of warning and following days
- Wed 29.07. 35° 16° measured
As of: Values as at the time of the warning; they are not updated afterwards.
Source: MeteoSwiss
Context & protective measures
Background: heat waves are becoming more frequent and intense in Switzerland. The greatest danger is the health burden from persistently high day and night temperatures, which favour dehydration, heat stroke and circulatory problems. The elderly, the chronically ill, pregnant women and infants are particularly at risk.
Recommendation
Likelihood is assessed as medium and impact as high. Take precautions: drink enough, avoid midday heat and physical exertion outdoors, keep living spaces cool by ventilating at night and in the morning and shading during the day, and look after vulnerable people around you.
What to do now
Observe any outdoor fire bans in place, check on vulnerable relatives or neighbours, and keep enough drinking water on hand. Consult the linked guide for protection against heat and drought.
Risk matrix
Event location
- Coordinates · WGS84
- 46.8495° N, 8.1541° E
- 46°50′58.2″ N 8°09′14.7″ E