Last updated: August 23, 2025
In September, the average temperature in Prienai, Lithuania is a pleasant 14°C (57°F). However, temperatures can fluctuate greatly, with minimums dipping to -1°C (30°F) and maximums soaring up to 28°C (82°F). Expect some rain during this period, as precipitation averages around 67 mm (2.6 in) over 12 days, accompanied by a high average humidity of 83%. Stay prepared for a range of weather conditions!
In September in Prienai, the average temperature is 14°C (57°F). Maximum temperatures can reach up to 28°C (82°F), while minimum temperatures can drop as low as -1°C (30°F). This weather means travelers should be prepared for both warm days and chilly nights, making layering essential for exploring.
In Prienai in September, the precipitation amount is 67 mm (2.6 in) distributed over 12 days.
In Prienai in September, humidity is 83%. With an average temperature of 14°C (57°F), this humidity feels like you're stepping into a warm, damp embrace that can make outdoor activities quite uncomfortable, often leaving you sweaty and exhausted if you're not prepared with plenty of water and breathable clothing.
In Prienai in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Prienai.
UV Risk Categories
Weather in Prienai varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Prienai, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (30°F) | 50 mm (2.0 inches) | 94% | low |
| February Weather | -1°C (30°F) | 38 mm (1.5 inches) | 92% | low |
| March Weather | 2°C (36°F) | 44 mm (1.8 inches) | 90% | moderate |
| April Weather | 7°C (45°F) | 46 mm (1.8 inches) | 86% | moderate |
| May Weather | 13°C (55°F) | 63 mm (2.5 inches) | 72% | high |
| June Weather | 18°C (65°F) | 56 mm (2.2 inches) | 74% | high |
| July Weather | 19°C (66°F) | 90 mm (3.6 inches) | 76% | high |
| August Weather | 18°C (65°F) | 82 mm (3.2 inches) | 74% | high |
| September Weather | 14°C (57°F) | 67 mm (2.6 inches) | 83% | moderate |
| October Weather | 9°C (49°F) | 66 mm (2.6 inches) | 91% | moderate |
| November Weather | 5°C (40°F) | 47 mm (1.9 inches) | 93% | low |
| December Weather | 0°C (32°F) | 57 mm (2.2 inches) | 95% | low |