The month in detail
What to expect in August
In the height of summer, Washington DC sees high temperatures (30°C). Heat is a factor for outdoor activities. Expect rain on 33% of days — a light raincoat in the bag is recommended. Not the best window, but acceptable if dates are constrained. June (8.6/10) is significantly better if possible.
August ranks 6 out of 12 months in Washington DC. Compared to July: −0.5h of sun per day.
This month's conditions
What it's like in August
UV index
7 · high
sunscreen and hat advised
Feels like
muggy at times
19°
Daylight
13.5h of daylight
Air quality
fair
AQI 41
Compare
Is August the right month?
The best month in Washington DC is June (8.6/10), 3.0 pts higher than August.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Washington DC
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Activities
Tours, tickets, experiences
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Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Washington DC
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a city break.
Country · USA
🗣️LanguageEnglish
💶CurrencyUS Dollar ($)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘExpensive · 4/5
🌡️ Climate
🌍Climate typeTemperate
📈Climate trend ⓘStable
🔥Hottest monthJuly · 31°C
❄️Coolest monthJanuary · 6°C
🌧️Rainiest month ⓘJuly · 35%
🏛️ City break
📅Tourist peak seasonJune → August
☔Indoor sights ⓘYear-round
🚇Public transportGood
Explore
Other destinations in August
If August doesn't convince you for this destination, compare with others.
Location
Where is Washington DC ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
USATemperate climate with a 8.6 → 4.1 gap between best and worst month. 10 years of ERA5 data to choose by project.
38.91°N · 77.04°W
Questions
Frequently asked questions
What is the best time to visit Washington DC?
June is the best month with 29.0°C highs, 18.0°C lows, 9.4h of sunshine and 30.0% rainy days. The months of June & September offer comparable conditions.
How many hours of sunshine does Washington DC get in June?
Washington DC averages 9.4 sunshine hours per day in June. It is the sunniest month with a climate score of 8.1/10.
What is the rainiest month in Washington DC?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Washington DC in June?
In June, overnight lows reach 18.0°C, while afternoon highs average 29.0°C.
Is Washington DC good in winter?
In winter (December-February), Washington DC scores 4.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains June with a score of 8.1/10.
When should you avoid Washington DC?
January is the most difficult month to visit Washington DC, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Do you need sun protection in Washington DC in August?
The average UV index reaches 7 in August in Washington DC (high), with about 13.5h of daylight. Sunscreen and hat advised.