Bagni di Craveggia was mentioned for the first time indirectly in the phrase "flumen de aqua calida" (warm water flow) on 11 January 1299 on the occasion of a land cession to the Locarnese Orelli family of recorded in Toceno.

The first direct mention can be found in a document from Craveggia from 1352, which speaks of the healing properties of water in rachitic and lymphatic diseases.

From this community in the farthest part of Valle Onsernone, limited pasture and corresponding passage rights to the municipality of Craveggia have been granted since 1406.

On 18 and 19 October 1944, the battle of the Bagni di Craveggia took place here, a border incident between German-Italian fascists, who were pursuing fleeing partisans, and the Swiss Army.

In the Winter of Terror, an avalanche fell from the north (Swiss side) on the Bagni and almost completely destroyed it; only the basement of the bath building and the slightly higher chapel remained.