Romanshorn is a city of approximately 9,000 people in Thurgau, Switzerland. Located in the Europe/Zurich time zone at 47.6°N latitude.
In 2025, Romanshorn recorded an average annual temperature of 51°F. The hottest temperatures reached 90°F in July; the coolest were 21°F in January. Total precipitation for the year was 47 inches, with the wettest month being August. Snowfall for the year totaled approximately 4 inches.
View current conditions and forecast for Romanshorn · More cities in Thurgau