Romanshorn Weather in September

September in Romanshorn averages 19°C (66°F) during the day and 11°C (52°F) at night. Quite a bit of rainfall is typical this month, with around 125 mm (4.9 in) on average. An umbrella is a good idea.

Rainfall in Romanshorn in September

Historically, approximately 12 days this month are expected to have rain, averaging 125 mm (4.9 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Romanshorn in September

If you're visiting Romanshorn in September, expect highs of 19°C (66°F) and overnight lows around 11°C (52°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Romanshorn in September

With about 155 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

If you prefer enjoying temperate temperatures and rain-free days, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.