National Harbor Weather in April

In National Harbor, April brings pleasant daytime temperatures around 20°C (68°F), with nights cooling to 8°C (46°F). Expect quite a bit of rainfall this month.

Rainfall in National Harbor in April

Historically, the month has about 12 days of rain, averaging 92 mm (3.6 in) in total. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in National Harbor in April

April tends to be one of the excellent months in National Harbor, with 20°C (68°F) in the afternoon and 8°C (46°F) overnight. The difference between afternoon and evening temperatures is usually noticeable. 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 National Harbor in April

The month enjoys around 227 hours of sunshine, creating mostly sunny days with good weather conditions.

Wind Speed in National Harbor in April

April has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.

If your ideal day consists of dry skies and pleasant temperatures, April typically offers the best circumstances for National Harbor.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our National Harbor's climate page.

National Harbor Temperature in April

Min Temperature 8°C (46°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 39%  

Precipitation 92 mm (3.6 in)  

Rainy days 12 days  

Humidity 58% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 227 hours *  

Percentage Sunshine 57% *  

* Data from: Washington DC, the United States of America (7 KM, 4 Miles).

What to Wear in National Harbor in April

For National Harbor in April, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in National Harbor in April

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our National Harbor's climate page.

More climate data for National Harbor

Temperature Rainfall Sunshine Humidity Wind Speed

See the full National Harbor climate overview or explore weather in the United States of America.