Last updated: August 23, 2025
In December, the average temperature in Ristinummi, Finland hovers around -2°C (28°F), with lows plunging to a frigid -26°C (-14°F) and highs reaching a mild 6°C (43°F). This month sees approximately 50 mm (2.0 in) of precipitation spread over 13 days, contributing to an average humidity of a crisp 93%. Stay warm and prepared for swift weather changes!
In December in Ristinummi, the average temperature is -2°C (28°F). The maximum can reach 6°C (43°F) and the minimum can be as low as -26°C (-14°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to enjoy their time in Ristinummi.
In Ristinummi in December, the precipitation amount is 50 mm (2.0 in), spread over 13 days.
In Ristinummi in December, the humidity is 93%. With an average temperature of -2°C (28°F), this humidity feels like a biting chill that seeps into your bones, making traveling feel uncomfortable and heavy as you contend with the dampness in the air, creating a stark contrast to the freezing temperatures.
In Ristinummi in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Ristinummi.
UV Risk Categories
Weather in Ristinummi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ristinummi, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (26°F) | 38 mm (1.5 inches) | 95% | low |
| February Weather | -5°C (23°F) | 41 mm (1.6 inches) | 93% | low |
| March Weather | -2°C (29°F) | 41 mm (1.6 inches) | 91% | moderate |
| April Weather | 3°C (38°F) | 41 mm (1.6 inches) | 85% | moderate |
| May Weather | 9°C (48°F) | 45 mm (1.8 inches) | 77% | moderate |
| June Weather | 15°C (59°F) | 58 mm (2.3 inches) | 74% | high |
| July Weather | 17°C (63°F) | 63 mm (2.5 inches) | 80% | high |
| August Weather | 15°C (60°F) | 88 mm (3.5 inches) | 82% | moderate |
| September Weather | 11°C (51°F) | 74 mm (2.9 inches) | 88% | moderate |
| October Weather | 6°C (42°F) | 82 mm (3.2 inches) | 92% | low |
| November Weather | 1°C (35°F) | 57 mm (2.2 inches) | 92% | low |
| December Weather | -2°C (28°F) | 50 mm (2.0 inches) | 93% | low |