Gretna Weather in December

December in Gretna averages 19°C (66°F) during the day and 9°C (48°F) at night. Quite a bit of rainfall is typical this month, with around 163 mm (6.4 in) on average. An umbrella is a good idea.

Rainfall in Gretna in December

You can typically expect 10 days of rain this month, averaging around 163 mm (6.4 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Gretna in December

December in Gretna brings pleasant temperatures, with highs of 19°C (66°F) and nights around 9°C (48°F). The winter season takes place during December. The difference between afternoon and evening temperatures is usually noticeable. With lows around 9°C (48°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Gretna in December

The city usually sees around 157 hours of sunlight, indicating a moderately sunny period.

Wind Speed in Gretna in December

In December, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.

Average water temperature in December

With water at 22°C (72°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period, it feels comfortable straight away.

If you prefer enjoying temperate temperatures and rain-free days, November typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.