Is Cancún sunnier than Cozumel?

They are nearly tied: Cancún gets about 2,850 hours of sunshine a year and Cozumel about 2,855.

Which is warmer, Cancún or Cozumel?

Year-round daytime highs are similar: Cancún averages 29°C (84°F), Cozumel 28°C (82°F).

Which is better in winter (November–February), Cancún or Cozumel?

They are close in the November–February window: Cancún averages 82/100 (about 27°C days), Cozumel 82/100 (about 27°C).

Which has the warmer sea, Cancún or Cozumel?

Cozumel — its sea peaks at about 31°C (88°F) versus 30°C.

Cancún vs Cozumel: which is sunnier?

🇲🇽 Mexico vs 🇲🇽 Mexico · 59 km apart · long-term climate normals (NASA POWER, 2001–2020)

Cancún and Cozumel are virtually tied for annual sunshine — about 2,850 vs 2,855 hours a year. Their Sunshine Scores are within 2 points of each other in every month of the year.

Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.

At a glance

	Cancún	Cozumel
Sunshine hours / year	2,850	2,855
Sunniest month	March (89/100)	March (88/100)
Nov–Feb average score	82/100	82/100
Jun–Aug average score	74/100	73/100
Rain / year	1,251 mm	1,282 mm
Warmest sea	30°C / 86°F	31°C / 88°F
Peak midday UV	11 (extreme)	11 (extreme)

Cancún vs Cozumel month by month

Month	Sunshine Score		Day high °C		Rain mm		Sea °C
Month	Cancún	Cozumel	Cancún	Cozumel	Cancún	Cozumel	Cancún	Cozumel
January	84	85	26°	26°	63	61	27°	28°
February	86	87	27°	27°	51	47	27°	27°
March	89	88	28°	27°	38	42	28°	28°
April	88	88	29°	28°	41	42	28°	28°
May	79	78	30°	29°	92	100	29°	29°
June	68	68	29°	29°	181	177	30°	30°
July	80	78	30°	29°	89	96	30°	30°
August	75	73	30°	30°	114	125	30°	31°
September	68	68	30°	29°	166	170	30°	31°
October	68	68	29°	29°	224	224	29°	30°
November	73	72	27°	27°	124	129	29°	29°
December	83	83	27°	27°	68	69	27°	28°

The sunnier month by month: Jan even · Feb even · Mar even · Apr even · May even · Jun even · Jul even · Aug even · Sep even · Oct even · Nov even · Dec even.

When to pick which

November–February: too close to call — Cancún averages 82/100, Cozumel 82/100. Daytime highs are similar (27°C vs 27°C). See the winter sun ranking.
March–May: too close to call — Cancún averages 85/100, Cozumel 85/100. Daytime highs are similar (29°C vs 28°C).
June–August: too close to call — Cancún averages 74/100, Cozumel 73/100. Daytime highs are similar (30°C vs 29°C).
September–October: too close to call — Cancún averages 68/100, Cozumel 68/100. Daytime highs are similar (30°C vs 29°C).

Sea temperature

Cozumel's sea gets warmer: 31°C / 88°F at its peak vs 30°C. Swimmable water (21°C+): Cancún all year, Cozumel all year. Month-by-month sea temperatures are in the table above.

Full month-by-month guides: Cancún weather by month · Cozumel weather by month · Best time to visit Mexico.

More comparisons: Cancún vs Mérida · Cancún vs Punta Cana · Cancún vs Tulum · Cozumel vs Mérida · Cozumel vs Chetumal · Cozumel vs Tulum · all head-to-heads