Grenchen Weather in May

May in Grenchen typically sees daytime highs of 19°C (66°F) and nighttime lows of 9°C (48°F). As the wettest month of the year, expect more rainfall than other months.

Rainfall in Grenchen in May

This is the wettest month of the year, so having an umbrella ready is a smart choice. Typically, about 18 days will experience rainfall, with an average of 149 mm (5.9 in) for the month. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Grenchen in May

Expect highs of 19°C (66°F) in Grenchen in May, with nights dropping to around 9°C (48°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. At 9°C (48°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Grenchen in May

The month enjoys around 195 hours of sunshine, creating mostly sunny days with good weather conditions.

If you prefer dry days with pleasant temperatures, June, July, August and September 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.