Last updated: August 27, 2025
In September, the average temperature in Osiek Jasielski, Poland hovers around 15°C (59°F). Expect temperatures to range from a chilly 2°C (35°F) to a warm 30°C (86°F). During this month, you can anticipate around 90 mm (3.6 in) of precipitation spread over 12 days, contributing to an average humidity of 69%. Stay prepared for a blend of mild and occasionally wet weather!
In September in Osiek Jasielski, the average temperature is 15°C (59°F), with maximums reaching up to 30°C (86°F) and minimums dropping as low as 2°C (35°F). This variability makes it advisable for travelers to pack layers to comfortably accommodate both warm afternoons and chilly evenings.
In Osiek Jasielski in September, the precipitation amount is 90 mm (3.6 in) spread over 12 days.
In Osiek Jasielski in September humidity is 69%. With an average temperature of 15°C (59°F), this humidity feels like a mild blanket wrapping around you, making it slightly uncomfortable for traveling; you'll likely find yourself seeking shade and refreshing drinks to stay cool as you explore.
In Osiek Jasielski in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Osiek Jasielski, you can refer to this Hourly UV Index in Osiek Jasielski.
UV Risk Categories
Weather in Osiek Jasielski varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Osiek Jasielski, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (30°F) | 46 mm (1.8 inches) | 91% | low |
| February Weather | 1°C (33°F) | 64 mm (2.5 inches) | 88% | moderate |
| March Weather | 4°C (39°F) | 47 mm (1.9 inches) | 86% | moderate |
| April Weather | 9°C (48°F) | 61 mm (2.4 inches) | 77% | high |
| May Weather | 14°C (57°F) | 107 mm (4.2 inches) | 69% | high |
| June Weather | 19°C (66°F) | 90 mm (3.6 inches) | 69% | very high |
| July Weather | 19°C (67°F) | 105 mm (4.1 inches) | 63% | very high |
| August Weather | 19°C (67°F) | 104 mm (4.1 inches) | 59% | high |
| September Weather | 15°C (59°F) | 90 mm (3.6 inches) | 69% | high |
| October Weather | 10°C (51°F) | 80 mm (3.1 inches) | 85% | moderate |
| November Weather | 5°C (42°F) | 58 mm (2.3 inches) | 90% | low |
| December Weather | 1°C (34°F) | 73 mm (2.9 inches) | 91% | low |