Late summer · Weather & things to do
Aspen in August
Aspen cools off: highs slip to 76°F (25°C), from 80°F in July, with lows of 49°F (10°C) and about 1.8 in (45 mm) of rain.
At 91/100 for comfort (4th of 12), it's one of the best months to visit.
- Avg high
- 76°F (25°C)
- Avg low
- 49°F (10°C)
- Rain
- 1.8 in (45 mm)
- Humidity
- 58%
- Cloud cover
- 54%
- Daylight
- ~13 h 32 min
- Comfort score
- 91/100 · Great
What August feels like
Highs settle around 76°F (25°C), warm enough for short sleeves most of the day.
Mornings start much cooler: lows average 49°F (10°C), about 15°C (27°F) below the afternoon high.
About 1.8 in (45 mm) of rain falls in a typical year's August.
Plan around August
August is one of Aspen's best months on the climate data.
- Last warm month for a while: September highs fall to 69°F.
- Comfort holds steady from July (92 → 91/100).
- August sits inside the Jun – Sep window our Colorado Rockies route recommends.
- Our Breckenridge, Vail & Aspen route recommends Dec – Mar, so August falls outside its suggested window.
What to pack for August
- Light, breathable clothes76°F afternoons
- Sunscreen, sunglasses and a hathigh UV on clear days
- A warm layer for eveningslows near 49°F
- Comfortable walking shoesmost picks involve some walking
What to do in Aspen in August
August is good outdoor weather here, so these picks lean toward the open air.
Independence Pass
12,095-foot Continental Divide crossing with short tundra walks at the top.
Why now Our curated notes say it's best Jun–Sep.
Aspen Mountain
Ski mountain rising straight from downtown Aspen, reached by the Silver Queen Gondola, with no beginner runs.
Why now August scores 91/100 for comfort, good conditions for being outside.
Grottos Trail
Short loop to smooth river-carved rock caves and cascades on the Roaring Fork.
Why now Highs near 76°F and 1.8 in of monthly rain make this an easy outdoor pick.
Silver Queen Gondola
Ride from downtown to the 11,212-foot summit of Aspen Mountain in about 15 minutes.
Why now One to do outside while the weather is on your side.
Matsuhisa
Nobu Matsuhisa's restaurant in a Victorian house on Main Street, a downtown fixture since the late 1990s.
J-Bar at Hotel Jerome
Classic 1889 hotel bar, home of the Aspen Crud bourbon milkshake.
Nearby in August
- Vail in August~39 mi · highs 75°F, 1.9 in rain · similar daytime temperatures, about as wet
- Breckenridge in August~46 mi · highs 70°F, 1.9 in rain · 4°C (7°F) cooler by day, about as wet
- Rocky Mountain NP in August~100 mi · highs 71°F, 1.7 in rain · 3°C (5°F) cooler by day, about as wet
- Denver in August~105 mi · highs 89°F, 2.0 in rain · 7°C (12°F) warmer by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~3,268 m to Aspen's ~2,405 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Aspen in August: quick answers
Is August a good time to visit Aspen?
Yes. On the climate data it's one of the best months, scoring 91/100. Expect highs of 76°F (25°C) and 1.8 in (45 mm) of rain. August is inside the Jun – Sep window our Colorado Rockies route recommends.
How hot is Aspen in August?
Average highs are 76°F (25°C) and average lows 49°F (10°C), making it the 2nd-warmest month by daytime highs.
Does it rain a lot in Aspen in August?
Not much: about 1.8 in (45 mm) of rain falls across August on average, the 5th-driest month of the year. The annual total is about 20.7 in (527 mm).
What should I pack for Aspen in August?
Bring light, breathable clothes (76°F afternoons), sunscreen, sunglasses and a hat (high UV on clear days), a warm layer for evenings (lows near 49°F) and comfortable walking shoes (most picks involve some walking).
Routes in season in August
- Colorado Rockies Jun – Sep
Planning Aspen in August?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.