Last updated: March 2, 2024
The weather in Rissa, Norway, during September is characterized by an average temperature of 11°C (52°F). Highs can soar to 19°C (66°F), while lows may dip to 5°C (41°F). Typically, the humidity level in Rissa throughout September hovers around 89%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Rissa averages 167 mm (6.6 inches) of rainfall, typically over the course of 18 rainy days. The month enjoys an average of 12 hours 54 minutes of daylight, with the sun shining for approximately 8 hours 45 minutes each day. Additionally, there is a 21% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Rissa reaches a maximum of 3, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 30 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 | 1 | 1 | 2 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 1 | 1 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||