i
Photo: Getty Images, Unsplash+.
Aspen in September
good · a good time to go
The year in Aspen
Tap a month for its page
- JanJAspen in January: ok, busy
- FebFAspen in February: good, busy
- MarMAspen in March: good
- AprAAspen in April: good
- MayMAspen in May: good
- JunJAspen in June: sweet spot
- JulJAspen in July: sweet spot
- AugAAspen in August: good
- SepSAspen in September: good
- OctOAspen in October: ok
- NovNAspen in November: avoid
- DecDAspen in December: ok, busy
- Sweet spot
- Good
- OK
- Avoid
- Busy
Plan this trip
Each site opens on its own search: choose your dates there. A few open on their home page, where you type the place too.
Links marked Ad pay us a commission if you book, at no extra cost to you; most pay nothing, and what a site pays never decides whether it is listed or where. How we rank
Book with the airline
Where to stay
Book direct
Luxury
Things to do
Car hire
Rent direct
Travel insurance
Check whether your bank card or home insurance already covers this trip.
If the trip needs a visa, the travel agent or visa centre usually sells the cover it asks for.
Mobile data (eSIM)
Your own plan's EU roaming may already cover this.
Renting a pocket Wi-Fi is the other common way to stay connected.
These are sites people in book with. Each opens in a new tab, on the site's own pages.
The numbers
| Daily high | 22°C |
|---|---|
| Nightly low | 5°C |
| Feels like, afternoon | 20°C |
| Rainy days, 1 mm or more | 6 · 36 mm |
| Humidity | 52% |
| Sunshine | 11.3 h/day |
| Daylight | 12.4 h/day |
| Crowds | 100 / 100, higher is quieter |
Ten-year averages for this calendar month. A rainy day is one with at least 1 mm of rain, as a weather station counts it. The model these figures come from drizzles more than a rain gauge, the more so the warmer the month, so its days count from 2 mm, rising to 5 mm in the hottest.
Weather read at Aspen, the town at Aspen Mountain's foot, 6 km from the airport (ASE): ten years of ERA5 and ERA5-Land reanalysis, through Open-Meteo's open data.
How busy it gets
Public holidays in September
Holidays crowd a place out and push fares up around them; they count toward the crowd score above.
Aspen in pictures
i
Wolfgang Moroder, CC BY-SA 3.0, via Wikimedia Commons
i
Rhododendrites, CC BY-SA 4.0, via Wikimedia Commons
i
Rhododendrites, CC BY-SA 4.0, via Wikimedia Commons
What to pack
- A proper coat, hat and gloves: nights average 5°C.
- Sun protection: about 11 hours of sunshine a day.
Each line is a threshold over the ten-year figures above, not advice from anywhere else.
Before you go
Type A and B plugs at 120 V. Drives on the right. The currency is the United states dollar. No UK Foreign Office advice against travel. Global Affairs Canada: Exercise normal security precautions. Everything for United States: cost of living, languages, emergency numbers and health.
On arrival in Aspen: the apps, paying, getting around, tipping and the emergency numbers.
September elsewhere
In September from
The other months at Aspen
Links marked Ad pay us a commission if you book through one, at no extra cost to you. That does not affect the numbers on this page, which are computed before any link is built.