Geishouse (French pronunciation: [ɡaisuz] ⓘ; German: Geishausen; Alsatian: Gaishüse) is a commune in the Haut-Rhin department in Grand Est in north-eastern France.

The average annual temperature in Geishouse is 9.0 °C (48.2 °F).

The average annual rainfall is 1,405.6 mm (55.34 in) with December as the wettest month.

The temperatures are highest on average in July, at around 17.8 °C (64.0 °F), and lowest in January, at around 0.6 °C (33.1 °F).

This Haut-Rhin geographical article is a stub.