Gretna Weather in May

Gretna in May sees high daytime temperatures of 29°C (84°F) and nighttime lows of 21°C (70°F). Rainfall is fairly high this month at around 143 mm (5.6 in), so pack a rain jacket to stay dry.

Rainfall in Gretna in May

This month experiences about 9 days of rain according to historical data, averaging 143 mm (5.6 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 May

Temperatures in Gretna in May top out at 29°C (84°F) and drop to 21°C (70°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights remain mild at 21°C (70°F), making evenings a pleasant time to be outdoors.

Sunshine in Gretna in May

Enjoy a sunny month with about 279 hours of sunshine, the clear skies make Gretna even more beautiful.

Wind Speed in Gretna in May

In May, 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 May

At 26°C (79°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

If your ideal day consists of dry skies and pleasant temperatures, November typically offers the best circumstances for Gretna.