Last updated: March 2, 2024
The weather in Jastarnia, Poland, during September is characterized by an average temperature of 16°C (61°F). Highs can soar to 23°C (74°F), while lows may dip to 12°C (53°F). Typically, the humidity level in Jastarnia throughout September hovers around 81%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Jastarnia averages 89 mm (3.5 inches) of rainfall, typically over the course of 15 rainy days. The month enjoys an average of 12 hours 39 minutes of daylight, with the sun shining for approximately 10 hours 32 minutes each day. Additionally, there is a 39% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Jastarnia reaches a maximum of 5, 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 | 3 | 4 | 5 | 5 | 4 | 3 | 2 | 1 | 1 | 1 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||