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When To Go · Destination Guide

Mahahual Chinchorro Mexico

Gateway to Mexico's wild offshore atoll and the healthiest reefs in the Caribbean Mexico

Updated Oct 30, 2025 • 23 sources

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When To Go

Season planner for Mahahual / Banco Chinchorro

Water stays warm year-round. May - September often brings calmer seas for Chinchorro crossings. November - March can see 'nortes with higher winds and occasional port closures. Sargassum season typically runs April - September, fluctuating by year. Turtle nesting peaks May - October.

At A Glance Heatmap

ActivityJanFebMarAprMayJunJulAugSepOctNovDec
Overall
Scuba
Freedive
Snorkel
Topside

Activity Drilldowns

PrimeShoulderPlan Carefully
Overall
May - September·Crowd:Low·Cost:Moderate
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Ideal: Calmer seas for crossings, 28°C water.

Plan Carefully: Nortes bring wind; port closures possible; inshore still diveable many days.

Sargassum tends to peak springsummer; offshore visibility is usually unaffected.

Scuba
May - September for Chinchorro; year-round inshore·Crowd:Low·Cost:Moderate
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Ideal: More Chinchorro windows, 26°C-29°C, light to moderate trades 15.0 kph-25.0 kph.

Plan Carefully: Nortes and surge; offshore runs often paused, inshore leeward sites favored.

Book 23 potential days for Chinchorro to catch the best weather window.

Freedive
May - September·Crowd:Low·Cost:Moderate
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Ideal: Calmer mornings, warm water 28°C for line work.

Plan Carefully: Choppier surface; stay inshore and behind reef.

Always plan safety support and a shore watch on openwater sessions.

Snorkel
March - October·Crowd:Low·Cost:Moderate
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Ideal: Light morning winds, turtles more common nearshore.

Plan Carefully: Wind waves and surge; choose protected boat spots.

If beach entries are weedy in sargassum months, book boat snorkels to clearer patches.

Topside
November - March·Crowd:Low·Cost:Moderate
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Ideal: Drier air and cooler nights, easier road-trips.

Plan Carefully: Hot, humid, and sargassum on some beaches; great for Bacalar lagoon days.

Check road conditions if driving south toward Xcalak after heavy rains.

Seasonal Callouts Timeline

  • Sea Turtle Nesting

    JanJan
    FebFeb
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    AprApr
    MayMay
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    JulJul
    AugAug
    SepSep
    OctOct
    NovNov
    DecDec

    Beach nesting peaks May - October along the Grand Costa Maya. Respect marked nests; red-light only at night.

  • Tarpon Schools at Xcalak

    JanJan
    FebFeb
    MarMar
    AprApr
    MayMay
    JunJun
    JulJul
    AugAug
    SepSep
    OctOct
    NovNov
    DecDec

    Large silver kings frequent currents near La Poza; sightings vary with tide and clarity.

  • American Crocodiles at Chinchorro

    JanJan
    FebFeb
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    AprApr
    MayMay
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    OctOct
    NovNov
    DecDec

    Crocodiles inhabit Cayo Centro lagoons. In-water interactions are not authorized; observe only from permitted vantage points with rangers.