Last updated: March 2, 2024
The weather in Horta, Portugal, during September is characterized by an average temperature of 22°C (72°F). Highs can soar to 24°C (75°F), while lows may dip to 20°C (68°F). Typically, the humidity level in Horta throughout September hovers around 83%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Horta averages 57 mm (2.2 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 12 hours 23 minutes of daylight, with the sun shining for approximately 10 hours 37 minutes each day. Additionally, there is a 43% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Horta reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 14:00 and 16:00, 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 | 0 | 1 | 1 | 3 | 5 | 7 | 8 | 9 | 8 | 6 | 4 | 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 | ||||||