Fairfax Weather in August

Fairfax in August sees high temperatures, with highs around 29°C (84°F) and overnight lows of 19°C (66°F). Rainfall is fairly high at around 83 mm (3.3 in) on average, so pack waterproofs just in case.

Rainfall in Fairfax in August

Typically, you can expect about 11 days of rain this month, with 83 mm (3.3 in) on average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Fairfax in August

August tends to be one of the perfect months in Fairfax, with 29°C (84°F) in the afternoon and 19°C (66°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 19°C (66°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Fairfax in August

Expect a lot of sunshine this month, with about 262 hours of sun. These sunny conditions add to the overall experience.

Wind Speed in Fairfax in August

In August, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.

If your ideal day consists of dry skies and pleasant temperatures, August typically offers the best circumstances for Fairfax.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Fairfax's climate page.

Fairfax Temperature in August

Min Temperature 19°C (66°F)  

Max Temperature 29°C (84°F)  

Chance of Rain 35%  

Precipitation 83 mm (3.3 in)  

Rainy days 11 days  

Humidity 69% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 262 hours *  

Percentage Sunshine 62% *  

* Data from: Washington DC, the United States of America (23 KM, 14 Miles).

What to Wear in Fairfax in August

Warm but pleasant conditions in Fairfax in August. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Fairfax in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Fairfax's climate page.

More climate data for Fairfax

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Fairfax climate overview or explore weather in the United States of America.