Weather in Washington in September
Washington, United Kingdom averages a high of 16.4°C (61.5°F) and low of 10.3°C (50.5°F) in September, with 10 rain days and 8.2 hours of daily sunshine. Travel score: 66.1/100 (Good). The best time to visit Washington is July.
High
16°C62°F
Low
10°C51°F
🌧️
10
rain days
☀️
8.2
hrs/day sunshine
💧
79%
humidity
66— Good
September in Washington is mild and occasionally wet — good for most activities.
What are the average temperatures in Washington?
How much does it rain in Washington in September?
Washington receives an average of 54.1mm of rainfall across 10 rainy days in September. The annual total is 689.3mm.
What should I pack for Washington in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 16°C
Recommended
🧥
Light rain jacket
Some rainy days expected (10 days)
☔
Umbrella
Be prepared for occasional showers
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
Traveling to United Kingdom in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31