Washington Weather in May

May in Washington brings moderate temperatures, with highs of 16°C (61°F) and nights dropping to 8°C (46°F). Expect some rainfall, with around 55 mm (2.2 in) typical for the month.

Rainfall in Washington in May

Historically, approximately 15 days this month are expected to have rain, averaging 55 mm (2.2 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Washington in May

Daytime highs in Washington in May reach 16°C (61°F), with nights around 8°C (46°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights drop to 8°C (46°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Washington in May

Expect a lot of sunshine this month, with about 192 hours of sun. These sunny conditions add to the overall experience.

Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.