January in Aspen — reliably good (6th best month)
Good · 8/10January averages -12°C (10°F) — deep-winter cold that dictates the whole trip: short outdoor stints, indoor plans on standby, and no expectation of long walking days.
Rainfall runs 49 mm, so plan one flexible day in three; you still get about 4 sunny days and 9.5 hours of daylight.
It scores 8/10 here, 6th of 12 months, against 9.5/10 in the destination's best month.
Expect peak pricing, and crowds are moderate.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer, goggles and a helmet if you are not renting.
If your dates are flexible, April is materially better in Aspen — 1.5 points higher on the same scale.
February in Aspen — reliably good (5th best month)
Good · 8.2/10February averages -12°C (10°F) — deep-winter cold that dictates the whole trip: short outdoor stints, indoor plans on standby, and no expectation of long walking days.
Expect 43 mm of rain — occasional showers rather than washed-out days — alongside about 12 sunny days and 10.5 daylight hours.
It scores 8.2/10 here, 5th of 12 months, against 9.5/10 in the destination's best month.
Expect mid-season pricing, and crowds are moderate.
Pack insulated layers, a windproof shell, gloves and boots with grip, goggles and a helmet if you are not renting.
March in Aspen — the year's strongest window
Best window · 9.2/10March averages -9°C (15°F) — deep-winter cold that dictates the whole trip: short outdoor stints, indoor plans on standby, and no expectation of long walking days.
Rainfall runs 72 mm, so plan one flexible day in three; you still get about 23 sunny days and 11.7 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Aspen at 9.2/10 — the reference point every other month on this page is measured against.
Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer, goggles and a helmet if you are not renting.
April in Aspen — the year's strongest window
Best window · 9.5/10April averages -4°C (25°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Expect 37 mm of rain — occasional showers rather than washed-out days — alongside about 27 sunny days and 13 daylight hours.
On our climate-comfort scale this is the top-ranked month of the year for Aspen at 9.5/10 — the reference point every other month on this page is measured against.
Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack insulated layers, a windproof shell, gloves and boots with grip, goggles and a helmet if you are not renting.
May in Aspen — the hardest end of the year
Hardest · 3.1/10May averages 3°C (38°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Expect 37 mm of rain — occasional showers rather than washed-out days — alongside about 27 sunny days and 14.1 daylight hours.
It scores 3.1/10 here, 8th of 12 months, against 9.5/10 in the destination's best month.
Expect low-season pricing, and crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, goggles and a helmet if you are not renting.
If your dates are flexible, April is materially better in Aspen — 6.4 points higher on the same scale.
June in Aspen — the hardest end of the year
Hardest · 1.7/10June averages 9°C (49°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 40 mm of rain — occasional showers rather than washed-out days — alongside about 30 sunny days and 14.7 daylight hours.
It scores 1.7/10 here, 9th of 12 months, against 9.5/10 in the destination's best month.
Expect low-season pricing, and crowds are light for this destination.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in.
If your dates are flexible, April is materially better in Aspen — 7.8 points higher on the same scale.
July in Aspen — the hardest end of the year
Hardest · 1.7/10July averages 14°C (57°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Expect 27 mm of rain — occasional showers rather than washed-out days — alongside about 31 sunny days and 14.5 daylight hours.
It scores 1.7/10 here, 10th of 12 months, against 9.5/10 in the destination's best month.
Expect low-season pricing, and crowds are light for this destination.
Pack layers you can shed by midday plus one warm layer for the evening.
If your dates are flexible, April is materially better in Aspen — 7.8 points higher on the same scale.
August in Aspen — the hardest end of the year
Hardest · 1.7/10August averages 13°C (55°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 68 mm, so plan one flexible day in three; you still get about 28 sunny days and 13.5 hours of daylight.
It scores 1.7/10 here, 11th of 12 months, against 9.5/10 in the destination's best month.
Expect low-season pricing, and crowds are light for this destination.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
If your dates are flexible, April is materially better in Aspen — 7.8 points higher on the same scale.
September in Aspen — the hardest end of the year
Hardest · 1.7/10September averages 9°C (48°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 34 mm of rain — occasional showers rather than washed-out days — alongside about 23 sunny days and 12.2 daylight hours.
It scores 1.7/10 here, 12th of 12 months, against 9.5/10 in the destination's best month.
Expect low-season pricing, and crowds are light for this destination.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in.
If your dates are flexible, April is materially better in Aspen — 7.8 points higher on the same scale.
October in Aspen — workable with trade-offs
Trade-offs · 6.5/10October averages 2°C (36°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Rainfall runs 57 mm, so plan one flexible day in three; you still get about 14 sunny days and 10.9 hours of daylight.
It scores 6.5/10 here, 7th of 12 months, against 9.5/10 in the destination's best month.
Expect mid-season pricing, and crowds are moderate.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer, goggles and a helmet if you are not renting.
If your dates are flexible, April is materially better in Aspen — 3 points higher on the same scale.
November in Aspen — the year's strongest window
Best window · 9.3/10November averages -7°C (20°F) — deep-winter cold that dictates the whole trip: short outdoor stints, indoor plans on standby, and no expectation of long walking days.
Rainfall runs 49 mm, so plan one flexible day in three; you still get about 5 sunny days and 9.8 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Aspen at 9.3/10 — the reference point every other month on this page is measured against.
Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer, goggles and a helmet if you are not renting.
December in Aspen — reliably good (4th best month)
Good · 8.4/10December averages -11°C (13°F) — deep-winter cold that dictates the whole trip: short outdoor stints, indoor plans on standby, and no expectation of long walking days.
Rainfall runs 50 mm, so plan one flexible day in three; you still get about 1 sunny days and 9.3 hours of daylight.
It scores 8.4/10 here, 4th of 12 months, against 9.5/10 in the destination's best month.
Expect peak pricing, and this is one of the busiest months here.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer, goggles and a helmet if you are not renting.
