The best time to see Whale Sharks of the Yucatán in 2027 is Mid-May to mid-September 2027.
Timing status: Natural timing window.
Marine wildlife · Mid-May to mid-September 2027
Annual · summer
Hundreds of the biggest fish on Earth, at once.
Off Isla Mujeres in high summer, one of the largest whale-shark gatherings ever recorded sieves the water for fish eggs, densest in the week either side of the full moon. Peak season is July and August; the early weeks build slowly.
when feeding peaks: Near the full moon
Where it is visible: Isla Mujeres, Mexico
Licensed boats and swimmer limits are enforced. The moon-phase link is real: plan around the full moon for the best odds.
Whale Sharks of the Yucatán 2027: Mid-May to mid-September 2027.
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