New Castle, Delaware, United States of America: What to pack, what to wear, and when to go [2018]

Traveling to New Castle, Delaware, United States of America? If you're planning to go to New Castle, here is some important information about when to go, what to wear, and what to pack:

When to go to New Castle, Delaware, United States of America

Based on the climate and weather in New Castle, the best time to go is September. See below for details.

What to wear/what to pack for New Castle, Delaware, United States of America by month

January

January can be brisk and somewhat rainy. Temperatures average in the high 30s F (single digits C) during the day. It rains 5-10 days this month and snows sometimes.

What to wear/what to pack:

  • Cold weather footwear
  • Warm pants or jeans
  • If you plan to ski, ski equipment
  • Waterproof boots
  • Umbrella
  • Heavy jacket
  • Heavy socks
  • Sweaters
  • Gloves or mittens
  • Waterproof coat

February

February in New Castle can be very chilly. The rain/snow can amount to several inches/centimeters.

During this time, temperatures average in the low 40s F (single digits C), although night temperatures can dip into the low 20s F (single digits below 0 C).

What to wear/what to pack:

  • Waterproof coat
  • Heavy jacket
  • Waterproof boots
  • Gloves or mittens
  • Heavy socks
  • Sweaters
  • Umbrella
  • If you plan to ski, ski equipment
  • Warm pants or jeans
  • Cold weather footwear

March

In March, New Castle can be very chilly and somewhat rainy. Temperatures routinely are in the low 50s F (single digits C) and 5-10 days this month jump into the low 60s F (mid 10s C) range. At night, lows are in the low 30s F (single digits C).

This is also a rainy time for New Castle, with several of the days of the month having rain. In March, humidity reaches as high as 60%.

What to wear/what to pack:

  • Standard footwear
  • Warm pants or jeans
  • Waterproof coat
  • Jacket or coat
  • Waterproof boots
  • Umbrella
  • Light gloves or mittens
  • If you plan to ski, ski equipment
  • Fleeces
  • Socks

April

April in New Castle can be chilly and somewhat rainy. The rain can amount to several inches/centimeters.

During this time, temperatures average in the low 60s F (high 10s C), although night temperatures can dip into the low 40s F (single digits C).

What to wear/what to pack:

  • Long skirts
  • Umbrella
  • Dresses
  • Rain coat
  • Light jacket or fleece
  • Pants or jeans
  • Standard footwear
  • Waterproof luggage
  • Socks
  • Waterproof footwear
  • Long sleeve shirts or blouses

May

May in New Castle is balmy and somewhat rainy. The rain can amount to several inches/centimeters.

During this time, temperatures average in the low 60s F (high 10s C) to low 70s F (low 20s C), although night temperatures can dip into the low 50s F (single digits C).

What to wear/what to pack:

  • Waterproof luggage
  • Sunscreen lotion
  • Sandals
  • Skirts
  • Long and short sleeve shirts
  • Light footwear
  • Rain coat
  • Waterproof footwear
  • Umbrella
  • Shorts or short pants
  • Dresses

June

Traveling to New Castle in June, you will notice that it is warm and somewhat rainy. Expect it to rain a bit less than half of the time. Daytime temperatures are in the low 80s F (high 20s C).

What to wear/what to pack:

  • Umbrella
  • Sunscreen lotion
  • Skirts
  • Long and short sleeve shirts
  • Dresses
  • Light footwear
  • Rain coat
  • Waterproof footwear
  • Shorts or short pants
  • Sandals
  • Waterproof luggage

July

July in New Castle can be very hot. The rain can amount to several inches/centimeters.

During this time, temperatures average in the 80s F (low 30s C), although night temperatures can dip into the low 60s F (mid 10s C).

What to wear/what to pack:

  • Dresses
  • Waterproof footwear
  • Sandals
  • Sunscreen lotion
  • Sunglasses
  • Rain coat
  • Waterproof luggage
  • Umbrella
  • Skirts
  • Short sleeve shirts
  • Shorts

August

August for New Castle is pretty consistently hot. Temperatures average in the low 80s F (high 20s C) during the day. It rains 5-10 days this month.

What to wear/what to pack:

  • Shorts or short pants
  • Waterproof footwear
  • Skirts
  • Dresses
  • Light footwear
  • Sandals
  • Sunscreen lotion
  • Waterproof luggage
  • Umbrella
  • Long and short sleeve shirts
  • Rain coat

September

If you vacation in New Castle during September, you are likely to find that it is warm. Temperatures tend to hover around the high 70s F (mid 20s C) during the day, while at night they can dip into the high 50s F (mid 10s C).

Humidity is generally between 50 and 60% during the day. In terms of precipitation, you can expect it to rain 5-10 days this month.

What to wear/what to pack:

  • Sandals
  • Sunscreen lotion
  • Shorts or short pants
  • Light footwear
  • Waterproof luggage
  • Skirts
  • Waterproof footwear
  • Dresses
  • Umbrella
  • Long and short sleeve shirts
  • Rain coat

October

October in New Castle is balmy. The average overnight temperatures in the area are in the 40s F (single digits C).

It tends to rain a bit less than half of the time. With the colder weather comes lower humidity, which is in the 50% to 60% range on average.

What to wear/what to pack:

  • Dresses
  • Socks
  • Long skirts
  • Long sleeve shirts or blouses
  • Light jacket or fleece
  • Waterproof footwear
  • Pants or jeans
  • Waterproof luggage
  • Rain coat
  • Umbrella
  • Standard footwear

November

November is cold. Temperatures average in the low 50s F (low 10s C) during the day. It rains a bit less than half of the time.

What to wear/what to pack:

  • Umbrella
  • Warm pants or jeans
  • Waterproof footwear
  • Socks
  • Light gloves or mittens
  • Standard footwear
  • Waterproof luggage
  • Rain coat
  • Jacket or coat
  • Fleeces

December

December in New Castle is brisk and somewhat rainy. The average overnight temperatures in the area are in the high 20s F (single digits below 0 C).

It tends to rain about a third of the time. But the colder weather doesn't bring low humidity, which is in the 60% to 60% range on average.

What to wear/what to pack:

  • If you plan to ski, ski equipment
  • Heavy socks
  • Waterproof coat
  • Sweaters
  • Cold weather footwear
  • Umbrella
  • Heavy jacket
  • Waterproof boots
  • Warm pants or jeans
  • Gloves or mittens

Year-round what to wear/what to pack for New Castle, Delaware, United States of America

Here are some general tips on what to wear in New Castle, as well as several items to remember to pack when traveling there.

  • A plug adadpter that supports outlet types A and B
  • A SIM card that works in New Castle
  • If you plan to visit a church, make sure to bring appropriate clothing
  • Appropriate museum wear

Check out our guides for these other locations: Hanmer Springs, New Zealand, New Plymouth, New Zealand, Pakse, Laos, Bengbu, China, Hastings, Minnesota, United States of America, Syracuse, Italy, Menaggio, Italy, Pašman, Croatia, Bagan, Myanmar, Thanbyuzayat, Myanmar, and Ellora, India.