Miami vs Key West: which is sunnier?
🇺🇸 United States vs 🇺🇸 United States · 202 km apart · long-term climate normals (NASA POWER, 2001–2020)
Key West is the sunnier overall: about 2,953 hours of sunshine a year to Miami's 2,653. Key West has the higher Sunshine Score in 9 of 12 months; the other 3 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Miami | Key West | |
|---|---|---|
| Sunshine hours / year | 2,653 | 2,953 |
| Sunniest month | January (86/100) | March (92/100) |
| Nov–Feb average score | 85/100 | 89/100 |
| Jun–Aug average score | 67/100 | 70/100 |
| Rain / year | 1,327 mm | 1,054 mm |
| Warmest sea | 32°C / 90°F | 31°C / 88°F |
| Peak midday UV | 9 (very high) | 10 (very high) |
Miami vs Key West month by month
| Month | Sunshine Score | Day high °C | Rain mm | Sea °C | ||||
|---|---|---|---|---|---|---|---|---|
| Miami | Key West | Miami | Key West | Miami | Key West | Miami | Key West | |
| January | 86 | 90 | 23° | 23° | 44 | 33 | 23° | 24° |
| February | 86 | 90 | 24° | 23° | 49 | 34 | 22° | 23° |
| March | 84 | 92 | 25° | 24° | 56 | 26 | 26° | 26° |
| April | 81 | 88 | 26° | 26° | 76 | 44 | 26° | 26° |
| May | 70 | 79 | 27° | 27° | 135 | 96 | 29° | 29° |
| June | 67 | 69 | 29° | 29° | 191 | 157 | 30° | 30° |
| July | 67 | 73 | 30° | 30° | 165 | 127 | 32° | 31° |
| August | 67 | 69 | 30° | 30° | 182 | 156 | 32° | 31° |
| September | 67 | 69 | 29° | 29° | 190 | 177 | 31° | 31° |
| October | 72 | 75 | 28° | 28° | 124 | 116 | 28° | 29° |
| November | 83 | 88 | 26° | 26° | 64 | 49 | 26° | 27° |
| December | 85 | 89 | 24° | 24° | 51 | 39 | 25° | 25° |
The sunnier month by month: Jan Key West · Feb Key West · Mar Key West · Apr Key West · May Key West · Jun even · Jul Key West · Aug even · Sep even · Oct Key West · Nov Key West · Dec Key West.
When to pick which
- November–February: Key West (average score 89/100 vs 85). Daytime highs are similar (24°C vs 24°C). See the winter sun ranking.
- March–May: Key West (average score 86/100 vs 78). Daytime highs are similar (26°C vs 26°C).
- June–August: Key West (average score 70/100 vs 67). Daytime highs are similar (30°C vs 30°C).
- September–October: too close to call — Miami averages 70/100, Key West 72/100. Daytime highs are similar (29°C vs 29°C).
Sea temperature
Miami's sea gets warmer: 32°C / 90°F at its peak vs 31°C. Swimmable water (21°C+): Miami all year, Key West all year. Month-by-month sea temperatures are in the table above.
Full month-by-month guides: Miami weather by month · Key West weather by month · Best time to visit United States.
More comparisons: Miami vs Havana · Miami vs Nassau · Miami vs West Palm Beach · Key West vs Havana · Key West vs Fort Myers · all head-to-heads