Gretna Weather in August

August in Gretna brings very high temperatures, with highs of 33°C (91°F) and nights dropping to 25°C (77°F). Rainfall is on the higher side this month, averaging around 209 mm (8.2 in), so keep a rain jacket handy.

Rainfall in Gretna in August

You can expect rain on roughly 19 days based on historical data, averaging 209 mm (8.2 in) for the month. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Gretna in August

Expect highs of 33°C (91°F) in Gretna in August, with nights dropping to around 25°C (77°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. With lows around 25°C (77°F), the nights are warm enough that a sheet is usually all you need for bedding. These temperatures represent the average, but hotter days can occur. Be prepared with light clothing and stay hydrated to manage the heat.

Sunshine in Gretna in August

With approximately 251 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Wind Speed in Gretna in August

Wind speeds average 3 m/s (6 knots) during August. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.

Average water temperature in August

The water temperature is 28°C (82°F), which most people find very comfortable. A good month for swimming and water sports.

August in Gretna has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.