Last updated: March 2, 2024
The weather in Willisau, Switzerland, during July is characterized by an average temperature of 18°C (65°F). Highs can soar to 29°C (85°F), while lows may dip to 8°C (47°F). Typically, the humidity level in Willisau throughout July hovers around 83%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In July, Willisau averages 165 mm (6.5 inches) of rainfall, typically over the course of 18 rainy days. The month enjoys an average of 15 hours 25 minutes of daylight, with the sun shining for approximately 13 hours 26 minutes each day. Additionally, there is a 34% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In July, the UV Index in Willisau reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 3 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||