Last updated: August 27, 2025
In May, the average temperature in Siedlce, Poland is a comfortable 13°C (56°F). However, residents and visitors should be prepared for a range of conditions, as temperatures can dip to a chilly -2°C (28°F) and soar up to a warm 30°C (86°F). On average, 77 mm (3.1 in) of precipitation falls over 13 days, accompanied by a moderate average humidity of 58%. Whether you're enjoying the crisp air or the warm days, be ready for a little bit of everything!
In May in Siedlce, the average temperature is 13°C (56°F), with maximums reaching 30°C (86°F) and minimums dropping as low as -2°C (28°F). This makes it important for travelers to pack layers to accommodate both warm days and chilly nights.
In Siedlce in May, the total precipitation amount is 77 mm (3.1 in) over a duration of 13 days.
In Siedlce in May, humidity is 58%. With an average temperature of 13°C (56°F), this humidity feels like a refreshing coolness that invigorates the senses, making it pleasant for traveling as long as you dress in layers to adjust to the slight chill.
In Siedlce in May, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Siedlce.
UV Risk Categories
Weather in Siedlce varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Siedlce, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (30°F) | 42 mm (1.6 inches) | 92% | low |
| February Weather | 0°C (32°F) | 43 mm (1.7 inches) | 90% | low |
| March Weather | 3°C (38°F) | 38 mm (1.5 inches) | 87% | moderate |
| April Weather | 8°C (47°F) | 41 mm (1.6 inches) | 76% | moderate |
| May Weather | 13°C (56°F) | 77 mm (3.1 inches) | 58% | high |
| June Weather | 19°C (67°F) | 75 mm (3.0 inches) | 56% | very high |
| July Weather | 20°C (68°F) | 78 mm (3.1 inches) | 59% | very high |
| August Weather | 19°C (67°F) | 87 mm (3.4 inches) | 60% | high |
| September Weather | 14°C (58°F) | 70 mm (2.7 inches) | 71% | moderate |
| October Weather | 10°C (50°F) | 68 mm (2.7 inches) | 86% | moderate |
| November Weather | 5°C (41°F) | 34 mm (1.3 inches) | 90% | low |
| December Weather | 1°C (34°F) | 51 mm (2.0 inches) | 93% | low |