National Harbor, District of Columbia, United States of America: What to pack, what to wear, and when to go [2018]

Traveling to National Harbor, District of Columbia, United States of America? If you're planning to go to National Harbor, here is some important information about when to go, what to wear, and what to pack:

When to go to National Harbor, District of Columbia, United States of America

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

What to wear/what to pack for National Harbor, District of Columbia, United States of America by month

January

January in National Harbor is brisk, snowy 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 a bit less than half of the time. But the colder weather doesn't bring low humidity, which is in the 50% to 60% range on average.

What to wear/what to pack:

  • Waterproof coat
  • Waterproof boots
  • Warm pants or jeans
  • Cold weather footwear
  • Heavy jacket
  • Umbrella
  • Gloves or mittens
  • Sweaters
  • Heavy socks

February

If you visit National Harbor during February, you are likely to find that it is brisk and snowy. Temperatures tend to hover around the high 40s F (single digits C) during the day, while at night they can dip into the low 30s F (single digits below 0 C).

Humidity is generally around 50 during the day. In terms of precipitation, you can expect it to rain about a third of the time.

What to wear/what to pack:

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

March

In March, National Harbor can be chilly and somewhat rainy. Temperatures routinely are in the 50s F (low 10s C) and regularly jump into the low 60s F (mid 10s C) range. At night, lows are in the high 30s F (single digits C).

During your visit, you can expect a couple of inches of snowfall. This is also a rainy time for National Harbor, with several of the days of the month having rain. In March, humidity reaches as high as 50%.

What to wear/what to pack:

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

April

In April, National Harbor is mild and somewhat rainy. Temperatures routinely are in the high 60s F (high 10s C) and a bit less than half of the time jump into the low 70s F (low 20s C) range. At night, lows are in the high 40s F (single digits C).

This is also a rainy time for National Harbor, with several of the days of the month having rain. In April, humidity reaches as high as 50%.

What to wear/what to pack:

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

May

If you go to National Harbor in May, you will notice that it is warm and somewhat rainy. Expect it to rain 5-10 days this month. Daytime temperatures are in the 70s F (mid 20s C).

What to wear/what to pack:

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

June

June here is pretty consistently hot. Temperatures average in the 80s F (high 20s C) during the day. It rains 5-10 days this month.

What to wear/what to pack:

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

July

If you vacation in National Harbor during July, you are likely to find that it is extremely hot and somewhat rainy. Temperatures tend to hover around the high 80s F (low 30s C) during the day, while at night they can dip into the low 70s F (low 20s C).

Humidity is generally between 50 and 60% during the day. In terms of precipitation, you can expect it to rain about a third of the time.

What to wear/what to pack:

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

August

August for National Harbor can be sweltering. Temperatures average in the high 80s F (low 30s C) during the day. It rains about a third of the time.

What to wear/what to pack:

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

September

September in National Harbor is a perfect temperature. The rain can amount to several inches/centimeters.

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

What to wear/what to pack:

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

October

If you go to National Harbor in October, you will notice that it is mild. Expect it to rain 5-10 days this month. Daytime temperatures are in the high 60s F (low 20s C).

What to wear/what to pack:

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

November

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

What to wear/what to pack:

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

December

If you go to National Harbor in December, you will notice that it can be very chilly. Expect it to rain a bit less than half of the time. Daytime temperatures are in the high 40s F (single digits C).

What to wear/what to pack:

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

Year-round what to wear/what to pack for National Harbor, District of Columbia, United States of America

Here are some general tips on what to wear in National Harbor, 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 National Harbor

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