Last updated: March 2, 2024
The weather in Altdorf, Switzerland, during May is characterized by an average temperature of 8°C (48°F). Highs can soar to 21°C (70°F), while lows may dip to -4°C (26°F). Typically, the humidity level in Altdorf throughout May hovers around 80%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Altdorf averages 190 mm (7.5 inches) of rainfall, typically over the course of 22 rainy days. The month enjoys an average of 15 hours 4 minutes of daylight, with the sun shining for approximately 11 hours 46 minutes each day. Additionally, there is a 29% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, the UV Index in Altdorf reaches a maximum of 8, 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 | 4 | 6 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 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 | ||||||