Best time to dive Cozumel
Best roughly November–April (calm, clear, least seaweed); occasional 'norte' winds cause choppy days. Eagle rays peak about December–March, bull sharks (off Playa del Carmen) late November–early March, best December–February. Hurricane peak August–October can cancel days or weeks.
Peak season: November–April
Overall diving, month by month
Balanced scoring · forecasts include the 2026/27 El Niño outlook
Confidence: Nov medium · Dec high · Jan medium · Feb medium · Mar medium · Apr medium · May medium · Jun medium · Jul medium · Aug medium · Sep medium · Oct low · Nov low · Dec medium
What's good when
Each attribute scored 0–10 for every month
| Nov2026 | Dec | Jan2027 | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pelagic & big animals | 7 | 7 | 7 | 7 | 7 | 6 | 5 | 5 | 5 | 5 | 5 | 6 | 7 | 7 |
| Macro life | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Coral & reef health | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 5 |
| Visibility | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 9 | 9 |
| Water temperature | 9 | 9 | 8 | 8 | 8 | 8 | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 9 |
| Weather & sea state | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 8 | 7 | 6 | 5 | 5 | 7 | 8 |
| Operations & access | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Climate outlook
How this year's forecast differs from a typical year
- Weather & sea state +1.3 · El Niño suppresses Atlantic hurricanes; La Niña tends to bring more (Nov 2026 – November 2027)
- Coral & reef health -1.6 · Late-summer bleaching risk in the year after a strong El Niño (Jul 2027 – November 2027)
Water temperature & visibility
| Month | Water | Visibility |
|---|---|---|
| November 2026 | 27.5 °C (82 °F) | 25–35 m |
| December 2026 | 27.0 °C (81 °F) | 25–35 m |
| January 2027 | 26.5 °C (80 °F) | 25–35 m |
| February 2027 | 26.0 °C (79 °F) | 25–35 m |
| March 2027 | 26.0 °C (79 °F) | 25–35 m |
| April 2027 | 26.5 °C (80 °F) | 25–35 m |
| May 2027 | 27.5 °C (82 °F) | 25–40 m |
| June 2027 | 28.0 °C (82 °F) | 25–40 m |
| July 2027 | 28.5 °C (83 °F) | 25–35 m |
| August 2027 | 29.0 °C (84 °F) | 25–35 m |
| September 2027 | 29.0 °C (84 °F) | 20–30 m |
| October 2027 | 28.5 °C (83 °F) | 20–30 m |
| November 2027 | 27.5 °C (82 °F) | 25–35 m |
| December 2027 | 27.0 °C (81 °F) | 25–35 m |
Marine life calendar
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| spotted eagle ray | Peak | Peak | Peak | ● | ● | Peak | ||||||
| bull shark | Peak | Peak | ● | ● | Peak | |||||||
| splendid toadfish | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
| turtles | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
Peak = best odds · ● = regularly seen · blank = unlikely. Calendar months, every year.
About the diving
- Difficulty
- Intermediate
- Current strength
- 4 / 5
- Luxury level
- 4 / 5
- Typical depth
- 10–30 m
- Max depth of interest
- 40 m
- Dive styles
- Day boat, Resort
- Suggested certification
- Open Water (drift diving)
- Nearest airport
- CZM
- Snorkelling
- Good
- Known for
- spotted eagle ray, bull shark, splendid toadfish, turtles
Famous sites: Palancar Gardens · Santa Rosa Wall · Columbia Deep · Punta Sur
Season notes & sources
- Best roughly November–April (calm, clear, least seaweed); occasional 'norte' winds cause choppy days. Eagle rays peak about December–March, bull sharks (off Playa del Carmen) late November–early March, best December–February. Hurricane peak August–October can cancel days or weeks.
Sources
- Diving in Cozumel (PADI)
- Diving in Cozumel with eagle rays (SSI)
- Best time to dive in Playa del Carmen: Riviera Maya calendar (Deep Mexico)
- Uncertainties ahead as 2026 Atlantic hurricane season starts in El Niño year (Caribbean Today)
- Will October end the Atlantic's historic hurricane pause? (WLRN, Oct 2026)
- El Niño conditions elevate coral bleaching risks on Florida's reef (Keys Weekly)