Quick Answer
April–May and September–October are the best times to visit Washington DC. The spring cherry blossoms around the Tidal Basin are among the most photographed events in the country, and the fall light on the National Mall monuments is exceptional. Better still, the Smithsonian museums and most National Mall monuments are free year-round. For a full guide to the capital, see our Washington DC city guide. Spring and fall fill hotels quickly - search options early.
Season Overview
| Month | Avg Temp | Rainfall | Crowds | Cost |
|---|---|---|---|---|
| January | 4°C | Medium | Low | Low |
| February | 6°C | Medium | Low | Low |
| March | 11°C | Medium | Medium-High | Medium-High |
| April | 17°C | Medium | Very High | Very High |
| May | 22°C | Medium | High | High |
| June | 27°C | Medium | High | High |
| July | 30°C | Medium | Very High | Very High |
| August | 29°C | Medium | Very High | Very High |
| September | 25°C | Low | High | High |
| October | 18°C | Low | Medium-High | Medium-High |
| November | 12°C | Medium | Medium | Medium |
| December | 6°C | Medium | Low | Low |
Peak Season: April (Cherry Blossoms) and July–August
Cherry blossom season is Washington DC’s signature event. The approximately 3,000 Yoshino cherry trees around the Tidal Basin bloom in late March to mid-April, with the peak typically lasting 7–10 days. The National Cherry Blossom Festival spans several weeks around this peak and includes a parade, concerts, and events across the city. Hotel rates in central DC can double or triple during peak bloom weekend, and the Tidal Basin path becomes extremely congested on weekends. Book accommodation 2–3 months in advance for this period.
July and August are peak tourist months driven by school holiday travel, particularly families visiting the Smithsonian Institution’s 19 free museums and the National Zoo. Temperatures reach 28–32°C with high humidity. The National Mall - the 3km open space between the Lincoln Memorial and the Capitol - can feel sweltering in mid-afternoon. The museums are air-conditioned and worth prioritizing during the hottest hours.
Shoulder Season: May and September–October
May is excellent. The cherry blossoms have finished and the peak crowds have eased, but temperatures at 19–24°C allow comfortable outdoor time. Memorial Day weekend is the exception - it brings significant crowds and elevated rates.
September is arguably the finest month. Summer crowds thin after Labor Day, temperatures drop to a comfortable 22–26°C, and the city’s many free museums are easy to navigate. The Library of Congress opens its full exhibition season. October brings fall foliage to Rock Creek Park and along the Mall, and the Marine Corps Marathon runs in late October.
Off Season: November–February
DC winters are cold but rarely brutal. January averages 4°C, and significant snowfall is possible, though the city handles it better than its reputation suggests. The museums and monuments are year-round draws - the National Air and Space Museum, National Museum of Natural History, and National Portrait Gallery are all free and excellent regardless of weather. Hotel rates drop substantially in January and February, making DC one of the most affordable major capitals to visit in winter.
Month-by-Month Guide
| Month | Weather | Crowds | Cost | Notes |
|---|---|---|---|---|
| January | 4°C, cold | Low | Low | Presidential Inauguration (every 4 years) |
| February | 6°C, cold | Low | Low | Cheapest hotel rates, quiet |
| March | 11°C, variable | Medium-High | Medium-High | Cherry blossoms begin, St. Patrick’s Day |
| April | 17°C, pleasant | Very High | Very High | Cherry Blossom Festival, peak bloom |
| May | 22°C, mild | High | High | Memorial Day, comfortable weather |
| June | 27°C, warm | High | High | Smithsonian Folklife Festival |
| July | 30°C, hot/humid | Very High | Very High | 4th of July fireworks on the Mall |
| August | 29°C, hot/humid | Very High | Very High | Peak family tourism |
| September | 25°C, excellent | High | High | Labor Day, cooler evenings |
| October | 18°C, fall colors | Medium-High | Medium-High | Marine Corps Marathon, Rock Creek fall foliage |
| November | 12°C, cool | Medium | Medium | Veterans Day events, quiet mid-month |
| December | 6°C, cold | Low | Low | Holiday season, National Christmas Tree |
Key Events and Festivals
- National Cherry Blossom Festival - late March/April, Tidal Basin and surrounding areas
- Smithsonian Folklife Festival - late June/July, National Mall, free
- Fourth of July Celebration - July 4, National Mall, fireworks over the Washington Monument
- Marine Corps Marathon - late October, 30,000 runners through DC and Virginia
- Library of Congress National Book Festival - September, Washington Convention Center
- Presidential Inauguration - January 20 every four years, National Mall
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