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Delaware

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Delaware Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Delaware year round climate

  • Spring (March–May): Average 48–64°F, climate transitions from cold to warm, March has more rainfall, April starts to become dry. Common activities: Outdoor walks, flower viewing. Suggested clothing: Light jacket, long-sleeved shirt, and rain gear in March.
  • Summer (June–August): Average 73–79°F, hot and dry, less rainfall. Common activities: Beach activities, outdoor picnics. Suggested clothing: Light and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): Average 50–69°F, temperature gradually decreases, September has more rainfall, then becomes dry. Common activities: Maple leaf viewing, outdoor hiking. Suggested clothing: Comfortable jacket, long-sleeved shirt.
  • Winter (December–February): Average 39–42°F, cold and humid, more rainfall. Common activities: Indoor activities, museum visits. Suggested clothing: Warm jacket, hat, scarf, gloves.

Delaware climatological average

Annual average temperature: approx. 59.0°F / Annual rainfall: approx. 801 mm / Summer humidity: 60%–70% / Rainiest month: March

Delaware monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
39.2°F
138.1
February
42.6°F
60.5
March
48.6°F
166.5
April
57.7°F
43.8
May
64.6°F
0
June
73.6°F
0
July
79.5°F
0
August
76.5°F
42.2
September
70°F
113.8
October
58.8°F
34.9
November
50.2°F
46.6
December
41.7°F
155.3

Delaware weather for the next seven days

12/16
Tuesday
Sunny
47.5°F/20.5°F
12/17
Wednesday
Partly Cloudy
47.5°F/30.4°F
12/18
Thursday
Cloudy
50.4°F/36.7°F
12/19
Friday
Moderate rain
58.7°F/31.1°F
12/20
Saturday
Sunny
40.9°F/29°F
12/21
Sunday
Partly Cloudy
54°F/40.4°F
12/22
Monday
Partly Cloudy
42.7°F/32.9°F

Delaware Frequently Asked Questions and Useful Information for Travel

What are the top attractions in Delaware?

Delaware offers a diverse range of attractions. Popular choices include Cape Henlopen State Park for its natural beauty and beaches, Nemours Estate for its stunning architecture and gardens, and the Rehoboth Beach Boardwalk for a classic seaside experience. The Air Mobility Command Museum is also a fascinating stop for aviation enthusiasts.

Is Delaware a worthwhile destination to visit?

Absolutely! Delaware is known for its unique experiences, from beautiful beaches and scenic open spaces to vibrant city lights and historic locations. Whether you seek outdoor adventures, culinary delights, or cultural discoveries, your getaway to Delaware is sure to be memorable.

When is the best time to plan a trip to Delaware?

The shoulder seasons of spring (April to May) and fall (September to November) are ideal for mild weather and fewer crowds in Delaware. Summer (June to August) is the peak season for warm-weather activities, especially at the beaches. Fall is particularly beautiful with vibrant foliage and popular events like the Sea Witch Halloween Festival.

What fun activities can you do in Delaware?

Delaware is brimming with fun and discovery. You can explore unique beaches, enjoy beautiful natural wilderness, tour historic mansions, wander through charming gardens, and delve into rich history. Plus, enjoy tax-free shopping. Delaware offers endless opportunities for outdoor recreation, arts, culture, and vibrant events and festivals.

What are some must-see natural attractions in Delaware?

Delaware boasts several stunning natural attractions. Cape Henlopen State Park is a highlight, offering expansive beaches, walking trails, and scenic overlooks. The Delaware Water Gap National Recreation Area, while shared with Pennsylvania, offers breathtaking vistas and outdoor pursuits accessible from Delaware's western border. The DuPont State Recreational Forest provides opportunities for hiking and wildlife viewing.