Last updated: August 23, 2025
In December, the average temperature in Sveti Petar u Sumi, Croatia is a brisk 7°C (45°F). Expect chilly days with temperatures dipping as low as -1°C (31°F) and peaking at a mild 16°C (60°F). Be prepared for 137 mm (5.4 in) of precipitation spread over 11 days, and you might want to pack an umbrella as the average humidity hovers at a high 88%.
In December in Sveti Petar u Sumi, the average temperature is 7°C (45°F). Maximum temperatures can reach 16°C (60°F), while minimums can drop to as low as -1°C (31°F). It's advisable to pack layers to stay comfortable while exploring the area's diverse outdoor attractions.
In Sveti Petar u Sumi in December, the total precipitation amount reaches 137 mm (5.4 in) over a span of 11 days.
In Sveti Petar u Sumi in December humidity is 88%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as you navigate through a heavy, thick atmosphere that clings to your skin.
In Sveti Petar u Sumi in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Sveti Petar u Sumi, you can visit Hourly UV Index in Sveti Petar u Sumi.
UV Risk Categories
Weather in Sveti Petar u Sumi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sveti Petar u Sumi, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (42°F) | 51 mm (2.0 inches) | 88% | low |
| February Weather | 7°C (45°F) | 108 mm (4.3 inches) | 82% | moderate |
| March Weather | 9°C (48°F) | 64 mm (2.5 inches) | 73% | moderate |
| April Weather | 13°C (55°F) | 89 mm (3.5 inches) | 73% | high |
| May Weather | 17°C (63°F) | 127 mm (5.0 inches) | 70% | very high |
| June Weather | 22°C (73°F) | 71 mm (2.8 inches) | 69% | very high |
| July Weather | 24°C (76°F) | 58 mm (2.3 inches) | 63% | very high |
| August Weather | 25°C (77°F) | 61 mm (2.4 inches) | 51% | very high |
| September Weather | 20°C (68°F) | 147 mm (5.8 inches) | 64% | high |
| October Weather | 15°C (60°F) | 89 mm (3.5 inches) | 83% | moderate |
| November Weather | 11°C (52°F) | 148 mm (5.8 inches) | 89% | moderate |
| December Weather | 7°C (45°F) | 137 mm (5.4 inches) | 88% | low |