Cornwall Weather in December

Cornwall in December sees low temperatures, with highs around 2°C (36°F) and overnight lows of -5°C (23°F). Rainfall is at its peak this month, around 118 mm (4.6 in) on average, so waterproofs are essential.

Rainfall in Cornwall in December

Being the wettest month, having an umbrella on standby can help you avoid getting caught in the rain. Looking at the last 30 years, the data shows about 19 days with snow/rain, averaging 118 mm (4.6 in) for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.

Temperature in Cornwall in December

December in Cornwall brings typical temperatures with highs around 2°C (36°F) and lows of -5°C (23°F). It stays very cold throughout much of the day, so warm winter clothing is essential. Nights drop below freezing to -5°C (23°F). An extra blanket is worth packing if you're unsure about the heating where you're staying. The month brings very cold weather, so dressing warmly is essential. Prepare with multiple layers for added warmth.

Sunshine in Cornwall in December

The month is characterized by fewer sunny days, with roughly 77 hours hours of sunshine. Ideal for those who prefer a cooler, cloudier climate.

December in Cornwall has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.