Chetumal vs Cozumel: which is sunnier?
🇲🇽 Mexico vs 🇲🇽 Mexico · 267 km apart · long-term climate normals (NASA POWER, 2001–2020)
Cozumel is the sunnier overall: about 2,855 hours of sunshine a year to Chetumal's 2,483. Cozumel has the higher Sunshine Score in 5 of 12 months; the other 7 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Chetumal | Cozumel | |
|---|---|---|
| Sunshine hours / year | 2,483 | 2,855 |
| Sunniest month | February (86/100) | March (88/100) |
| Nov–Feb average score | 79/100 | 82/100 |
| Jun–Aug average score | 68/100 | 73/100 |
| Rain / year | 1,392 mm | 1,282 mm |
| Warmest sea | 32°C / 90°F | 31°C / 88°F |
| Peak midday UV | 10 (very high) | 11 (extreme) |
Chetumal vs Cozumel month by month
| Month | Sunshine Score | Day high °C | Rain mm | Sea °C | ||||
|---|---|---|---|---|---|---|---|---|
| Chetumal | Cozumel | Chetumal | Cozumel | Chetumal | Cozumel | Chetumal | Cozumel | |
| January | 81 | 85 | 27° | 26° | 68 | 61 | 27° | 28° |
| February | 86 | 87 | 28° | 27° | 40 | 47 | 27° | 27° |
| March | 86 | 88 | 29° | 27° | 38 | 42 | 29° | 28° |
| April | 86 | 88 | 31° | 28° | 39 | 42 | 30° | 28° |
| May | 70 | 78 | 31° | 29° | 130 | 100 | 31° | 29° |
| June | 66 | 68 | 30° | 29° | 201 | 177 | 31° | 30° |
| July | 71 | 78 | 30° | 29° | 120 | 96 | 31° | 30° |
| August | 66 | 73 | 30° | 30° | 154 | 125 | 32° | 31° |
| September | 66 | 68 | 30° | 29° | 172 | 170 | 32° | 31° |
| October | 66 | 68 | 29° | 29° | 221 | 224 | 30° | 30° |
| November | 70 | 72 | 28° | 27° | 128 | 129 | 29° | 29° |
| December | 79 | 83 | 27° | 27° | 81 | 69 | 27° | 28° |
The sunnier month by month: Jan Cozumel · Feb even · Mar even · Apr even · May Cozumel · Jun even · Jul Cozumel · Aug Cozumel · Sep even · Oct even · Nov even · Dec Cozumel.
When to pick which
- November–February: Cozumel (average score 82/100 vs 79). Daytime highs are similar (28°C vs 27°C). See the winter sun ranking.
- March–May: Cozumel (average score 85/100 vs 81). Chetumal is the warmer, around 30°C daytime highs vs 28°C.
- June–August: Cozumel (average score 73/100 vs 68). Daytime highs are similar (30°C vs 29°C).
- September–October: too close to call — Chetumal averages 66/100, Cozumel 68/100. Daytime highs are similar (30°C vs 29°C).
Sea temperature
Chetumal's sea gets warmer: 32°C / 90°F at its peak vs 31°C. Swimmable water (21°C+): Chetumal all year, Cozumel all year. Month-by-month sea temperatures are in the table above.
Full month-by-month guides: Chetumal weather by month · Cozumel weather by month · Best time to visit Mexico.
More comparisons: Chetumal vs Belize City · Chetumal vs Tulum · Cozumel vs Mérida · Cozumel vs Cancún · Cozumel vs Tulum · all head-to-heads