Denver vs Aspen: which is sunnier?
🇺🇸 United States vs 🇺🇸 United States · 201 km apart · long-term climate normals (NASA POWER, 2001–2020)
Denver and Aspen are virtually tied for annual sunshine — about 3,169 vs 3,154 hours a year. Denver has the higher Sunshine Score in 6 of 12 months, Aspen in 2 (4 within 2 points).
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
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At a glance
| Denver | Aspen | |
|---|---|---|
| Sunshine hours / year | 3,169 | 3,154 |
| Sunniest month | September (92/100) | June (94/100) |
| Nov–Feb average score | 6/100 | 0/100 |
| Jun–Aug average score | 86/100 | 91/100 |
| Rain / year | 415 mm | 527 mm |
| Peak midday UV | 10 (very high) | 9 (very high) |
Denver vs Aspen month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Denver | Aspen | Denver | Aspen | Denver | Aspen | |
| January | 0 | 0 | 5° | -1° | 14 | 48 |
| February | 0 | 0 | 6° | 0° | 17 | 45 |
| March | 38 | 0 | 13° | 4° | 30 | 45 |
| April | 67 | 7 | 17° | 9° | 48 | 51 |
| May | 86 | 60 | 22° | 16° | 64 | 43 |
| June | 89 | 94 | 30° | 24° | 47 | 21 |
| July | 79 | 89 | 33° | 27° | 53 | 47 |
| August | 89 | 90 | 31° | 25° | 46 | 45 |
| September | 92 | 89 | 26° | 21° | 34 | 46 |
| October | 77 | 30 | 18° | 12° | 29 | 43 |
| November | 24 | 0 | 11° | 5° | 17 | 42 |
| December | 0 | 0 | 4° | -1° | 16 | 51 |
The sunnier month by month: Jan even · Feb even · Mar Denver · Apr Denver · May Denver · Jun Aspen · Jul Aspen · Aug even · Sep Denver · Oct Denver · Nov Denver · Dec even.
When to pick which
- November–February: Denver (average score 6/100 vs 0). Denver is the warmer, around 7°C daytime highs vs 1°C. See the winter sun ranking.
- March–May: Denver (average score 64/100 vs 22). Denver is the warmer, around 17°C daytime highs vs 10°C.
- June–August: Aspen (average score 91/100 vs 86). Denver is the warmer, around 31°C daytime highs vs 25°C.
- September–October: Denver (average score 85/100 vs 60). Denver is the warmer, around 22°C daytime highs vs 17°C.
Full month-by-month guides: Denver weather by month · Aspen weather by month · Best time to visit United States.
More comparisons: Denver vs Colorado Springs · Denver vs Rapid City · Denver vs Eagle · Aspen vs Colorado Springs · Aspen vs Grand Junction · Aspen vs Montrose · all head-to-heads