Quintana Roo

The sea in Quintana Roo peaks in July, when the water averages around 29°C.

The main swimming season runs from January – December, when surface temperatures stay comfortable for extended sessions.

On average, 12 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.

The coldest month is typically January at around 26°C, when cold-water swimmers dominate the coast.

Long-term climatology for Quintana Roo shows an annual mean sea temperature of 27°C, ranging from 26°C in winter to 29°C at the summer peak.

The seasonal swing is roughly 3°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.

Recent decades have trended slightly warmer at Quintana Roo, in line with regional sea-surface temperature records for the wider basin.

Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.