Washington DC Weather in August

August in Washington DC brings very high temperatures, with daytime highs of 31°C (88°F) and nights around 21°C (70°F). Quite a bit of rainfall is expected, around 76 mm (3 in), so pack an umbrella.

Rainfall in Washington DC in August

Analyzing past climate data, one can expect approximately 10 days of rain, averaging 76 mm (3 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Washington DC in August

August in Washington DC brings very high temperatures, with highs of 31°C (88°F) and nights around 21°C (70°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. Nights remain mild at 21°C (70°F), making evenings a pleasant time to be outdoors.

Sunshine in Washington DC in August

With approximately 262 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Wind Speed in Washington DC in August

In August, 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.

If you prefer dry days with pleasant temperatures, April and September typically offer 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.