Seasons in Delaware

In Delaware, good weather is more common than bad. The continental climate is mitigated by the proximity of the sea and each of the four seasons is attractive to tourists. 

Summers are hot enough, but beaches and swimming help to cope with the heat. On the coast, temperatures differ by about 10 °F from the plains on the continent. Winters are mild, there is little snow, thunderstorms are possible in summer and late spring.


Seasons

Contents:

Spring in Delaware

Spring in Delaware is fast and friendly. Already in March it gets warmer, May can be considered the beginning of summer. From March to May, the thermometer reads smoothly from 50 °F (+10 °C) to 73-77 °F (+24 °C). In early spring, it can be cold at night, only 32-37 °F (+1 °C). In March, it can be rainy, don't forget a light jacket or umbrella.

While it is not warm enough for a beach holiday, we advise you to visit the Wilmingon and Western Railways. You can ride the Brandywine Valley. This is a real gem of the state. In Greater Delaware, you will see a beautiful sight - the kite festival. Open-air concerts begin in Wilmington in May at Bottle & Cork Beach, The Queen and other venues.

Climate of the Spring Months

March
Max average t°: 52 °F (+11 °C)
Min average t°: 36 °F (+2 °C)
Sundial in the day: 8 hours
Rainy days: 7 days
Precipitation: 4.2" (106 mm)
April
Max average t°: 64 °F (+18 °C)
Min average t°: 45 °F (+7 °C)
Sundial in the day: 8.5 hours
Rainy days: 8 days
Precipitation: 3.7" (93 mm)
May
Max average t°: 73 °F (+23 °C)
Min average t°: 56 °F (+13 °C)
Sundial in the day: 9 hours
Rainy days: 8 days
Precipitation: 3.7" (95 mm)

(Wilmington)

Spring Holidays

March 1st: National Women of Color Day.
March 17: St.Patrick 's Day.
Good Friday (usually falls in March or April)

April 1: April Fools' Day.
April 22: International Earth Day.

2nd Sunday of May: Mother’s Day.
last Monday in May: Memorial Day.

Summer in Delaware

Delaware has hot summers, but the proximity of the ocean softens it. From July to August, the chances of rain are quite high. Temperatures range from 80 °F (+26 °C) to 90 °F (+32 °C). It rains more often in the afternoon, so take a seat on the beach in the morning.

You will find many summer activities on the shores of Delaware Bay or in Rehoboth Bay, at Cape Henlopen. There are campings, hotels, public beaches. Enjoy a wilderness experience at Lams Pond State Park. In the rivers and lakes, you can go fishing, boating and kayaking. Away from the coast, the water parks Jungle Jims, Killens Pond or Thunder Lagoon await vacationers.


Climate of the Summer Months

June
Max average t°: 81 °F (+27 °C)
Min average t°: 65 °F (+18 °C)
Sundial in the day: 10 hours
Rainy days: 8 days
Precipitation: 4.1" (103 mm)
July
Max average t°: 85 °F (+29.5 °C)
Min average t°: 70 °F (+21 °C)
Sundial in the day: 11 hours
Rainy days: 8 days
Precipitation: 4.0" (101 mm)
August
Max average t°: 83 °F (+28.5 °C)
Min average t°: 69 °F (+20 °C)
Sundial in the day: 10 hours
Rainy days: 8 days
Precipitation: 4.0" (102 mm)

(Wilmington)

Summer Holidays

June 14: Day of the American flag.
June 19: Juneteenth National Independence Day.
Third Sunday of June: Father’s Day.

July 4: Independence Day.
August 26: Women's Equality Day.

Autumn in Delaware

Autumn in Delaware has three damaging factors - warm sunny September, golden October from falling leaves and November clear from the first night frosts. Many recommend choosing this time to visit the state. It's no longer hot, with temperatures gradually moving from 79 °F (+26 °C) in September to 30-39 °F (-1 +4 °C) in November.

With the arrival of autumn, the rains disappear. Brandywine Valley is painted in bright golden-red tones. The hills of New Castle County are striking in color. There are many festivals around this time, such as Sea Witch or Apple Scrapple. We recommend hiking to Trap Pond State Park, famous for its slender cypress trees.


Climate of the Autumn Months

September
Max average t°: 77 °F (+25 °C)
Min average t°: 62 °F (+17 °C)
Sundial in the day: 8 hours
Rainy days: 7 days
Precipitation: 4.2" (107 mm)
October
Max average t°: 66 °F (+19 °C)
Min average t°: 51 °F (+11 °C)
Sundial in the day: 7 hours
Rainy days: 6 days
Precipitation: 3.6" (92 mm)
November
Max average t°: 55 °F (+13 °C)
Min average t°: 41 °F (+5 °C)
Sundial in the day: 6.5 hours
Rainy days: 6 days
Precipitation: 2.9" (73 mm)

(Wilmington)

Autumn Holidays

1st Monday in September: Labor Day.

2nd Monday in October: Columbus Day.
October 31: Halloween (All Hallows' Eve).

November 11: Veterans Day.
4th Thursday in November: Thanksgiving Day.
Friday After Thanksgiving

Winter in Delaware

Winters in the state are mild, there is little snow and not too windy. Daytime temperatures are around 40-50 °F (+5 +10 °C). More snow falls further from the coast. The north of the state averages 5-10 °F  (-15 -12 °C) cooler.

The main entertainment of the winter season is Christmas festivities. Houses are adorned with lights, shops are announcing the season of discounts. Brandywine Valley remains a favorite destination all year round.

Climate of the Winter Months

December
Max average t°: 45 °F (+7 °C)
Min average t°: 32 °F (0 °C)
Sundial in the day: 6 hours
Rainy days: 5 days
Precipitation: 4.0" (102 mm)
January
Max average t°: 41 °F (+5 °C)
Min average t°: 27 °F (-3 °C)
Sundial in the day: 6 hours
Rainy days: 5 days
Precipitation: 3.3" (85 mm)
February
Max average t°: 44 °F ( +6 °C)
Min average t°: 29 °F (-2 °C)
Sundial in the day: 7 hours
Rainy days: 5 days
Precipitation: 3.0" (76 mm)

(Wilmington)

Winter Holidays

December 25: Christmas Day.

January 1: New Year’s Day.
3rd Monday in January: Birthday of Martin Luther King, Jr.

February 12: Lincoln Day
February 14: St. Valentine's Day.
3rd Monday in February: Washington’s Birthday.