Last updated: August 27, 2025
In December, the average temperature in Newton Stewart, United Kingdom hovers around 6°C (43°F), offering a chilly atmosphere. Expect lows that can plunge to -4°C (25°F), while maximum highs reach up to 12°C (54°F). This month also brings 134 mm (5.3 in) of precipitation spread over 18 days, contributing to an average humidity of 89%, making the air feel quite damp. Prepare accordingly!
In December in Newton Stewart, the average temperature is 6°C (43°F), with maximums reaching up to 12°C (54°F) and minimums dropping as low as -4°C (25°F). It's advisable to pack warm clothing for your travels during this time.
In Newton Stewart in December, the precipitation amount is 134 mm (5.3 in) over the course of 18 days.
In Newton Stewart in December, humidity is 89%. With an average temperature of 6°C (43°F), this humidity feels like a chilly, damp embrace that can make outdoor activities uncomfortable and energy-draining, often leading travelers to seek shelter indoors or dress in layers to cope with the cold and moist air.
In Newton Stewart 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 Newton Stewart.
UV Risk Categories
Weather in Newton Stewart varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Newton Stewart, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 94 mm (3.7 inches) | 90% | low |
| February Weather | 5°C (42°F) | 154 mm (6.1 inches) | 88% | low |
| March Weather | 6°C (43°F) | 109 mm (4.3 inches) | 86% | moderate |
| April Weather | 8°C (46°F) | 51 mm (2.0 inches) | 85% | moderate |
| May Weather | 11°C (52°F) | 69 mm (2.7 inches) | 80% | high |
| June Weather | 14°C (57°F) | 106 mm (4.2 inches) | 83% | very high |
| July Weather | 15°C (59°F) | 107 mm (4.2 inches) | 82% | very high |
| August Weather | 15°C (59°F) | 134 mm (5.3 inches) | 82% | high |
| September Weather | 13°C (55°F) | 107 mm (4.2 inches) | 88% | moderate |
| October Weather | 10°C (51°F) | 155 mm (6.1 inches) | 90% | moderate |
| November Weather | 8°C (46°F) | 141 mm (5.5 inches) | 92% | low |
| December Weather | 6°C (43°F) | 134 mm (5.3 inches) | 89% | low |