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.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Gretna's climate page.

Gretna Temperature in December

Min Temperature 9°C (48°F)  

Max Temperature 19°C (66°F)  

Water Temperature 22°C (72°F) *  

Chance of Rain 33%  

Precipitation 163 mm (6.4 in)  

Rainy days 10 days  

Humidity 76% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 157 hours *  

Percentage Sunshine 50% *  

* Data from: New Orleans, the United States of America (20 KM, 12 Miles).

What to Wear in Gretna in December

Pleasant temperatures in December mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Expect water temperatures of around 22°C (72°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Gretna in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Camping

3/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Gretna's climate page.

More climate data for Gretna

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Gretna climate overview or explore weather in the United States of America.