Last updated: March 2, 2024
The weather in Hallstahammar, Sweden, during September is characterized by an average temperature of 12°C (54°F). Highs can soar to 22°C (71°F), while lows may dip to 1°C (35°F). Typically, the humidity level in Hallstahammar throughout September hovers around 83%.
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Average temperature
Maximum temperature
Humidity
In September, Hallstahammar averages 63 mm (2.5 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 12 hours 46 minutes of daylight, with the sun shining for approximately 9 hours 39 minutes each day. Additionally, there is a 25% probability of sunny days during this period.
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Chance of sun
In September, the UV Index in Hallstahammar reaches a maximum of 4, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 | 2 | 2 | 3 | 4 | 4 | 4 | 3 | 2 | 1 | 1 | 1 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||