Mérida vs Cozumel: which is sunnier?
🇲🇽 Mexico vs 🇲🇽 Mexico · 286 km apart · long-term climate normals (NASA POWER, 2001–2020)
Mérida and Cozumel are virtually tied for annual sunshine — about 2,795 vs 2,855 hours a year. Cozumel has the higher Sunshine Score in 6 of 12 months, Mérida in 5 (1 within 2 points).
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.


At a glance
| Mérida | Cozumel | |
|---|---|---|
| Sunshine hours / year | 2,795 | 2,855 |
| Sunniest month | February (90/100) | March (88/100) |
| Nov–Feb average score | 89/100 | 82/100 |
| Jun–Aug average score | 67/100 | 73/100 |
| Rain / year | 1,045 mm | 1,282 mm |
| Peak midday UV | 11 (extreme) | 11 (extreme) |
Mérida vs Cozumel month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Mérida | Cozumel | Mérida | Cozumel | Mérida | Cozumel | |
| January | 89 | 85 | 29° | 26° | 33 | 61 |
| February | 90 | 87 | 31° | 27° | 29 | 47 |
| March | 83 | 88 | 33° | 27° | 20 | 42 |
| April | 63 | 88 | 35° | 28° | 26 | 42 |
| May | 57 | 78 | 35° | 29° | 73 | 100 |
| June | 61 | 68 | 33° | 29° | 183 | 177 |
| July | 72 | 78 | 32° | 29° | 128 | 96 |
| August | 68 | 73 | 32° | 30° | 152 | 125 |
| September | 68 | 68 | 31° | 29° | 188 | 170 |
| October | 72 | 68 | 30° | 29° | 127 | 224 |
| November | 86 | 72 | 29° | 27° | 52 | 129 |
| December | 89 | 83 | 29° | 27° | 34 | 69 |
The sunnier month by month: Jan Mérida · Feb Mérida · Mar Cozumel · Apr Cozumel · May Cozumel · Jun Cozumel · Jul Cozumel · Aug Cozumel · Sep even · Oct Mérida · Nov Mérida · Dec Mérida.
When to pick which
- November–February: Mérida (average score 89/100 vs 82). Mérida is the warmer, around 30°C daytime highs vs 27°C. See the winter sun ranking.
- March–May: Cozumel (average score 85/100 vs 68). Mérida is the warmer, around 34°C daytime highs vs 28°C.
- June–August: Cozumel (average score 73/100 vs 67). Mérida is the warmer, around 32°C daytime highs vs 29°C.
- September–October: too close to call — Mérida averages 70/100, Cozumel 68/100. Mérida is the warmer, around 31°C daytime highs vs 29°C.
Full month-by-month guides: Mérida weather by month · Cozumel weather by month · Best time to visit Mexico.
More comparisons: Mérida vs Cancún · Mérida vs Ciudad del Carmen · Mérida vs Tulum · Cozumel vs Cancún · Cozumel vs Chetumal · Cozumel vs Tulum · all head-to-heads