Washington Weather in May

May in Washington sees daytime temperatures around 25°C (77°F) and lows of 12°C (54°F) at night. As the wettest month of the year, keep in mind that rainfall is at its highest.

Rainfall in Washington in May

Given that this is the rainiest month, it's wise to carry an umbrella to stay dry during unexpected showers. Expect around 15 days of rain based on historical data, with 126 mm (5 in) average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Washington in May

Expect highs of 25°C (77°F) in Washington in May, with nights dropping to around 12°C (54°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 12°C (54°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Washington in May

There are approximately 269 hours of sunshine this month, resulting in mostly clear days.

If you prefer enjoying temperate temperatures and rain-free days, October 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.