Cancún in December 2026: weather, sargassum and which beaches to pick
December is in the low season for seaweed, with highs near 82 °F (28 °C) and lows near 68 °F (20 °C). The usually light beaches, such as Playa Langosta, Playa Tortugas and Playa Caracol, are expected light; the open coast from the Hotel Zone to Tulum is expected moderate.
Typical weather
Climate averages- High
- 82 °F 28 °C
- Low
- 68 °F 20 °C
- Rain
- 3.3 in 83 mm
Outside the Atlantic hurricane season (June 1 – November 30).
Source: NOAA NCEI Global Summary of the Month, Cancún station
Seaweed by zone
Expected for December- Holbox2 usually light beachesExpected light · December
- Costa Mujeres3 usually light beachesExpected light · December
- Cancún · bay sideUsually lightExpected light · December
- Cozumel · west coastUsually lightExpected light · December
- Isla Mujeres4 usually light beachesExpected moderate · December
- Cancún · open coastExpected moderate · December
- Puerto MorelosExpected moderate · December
- Playa del CarmenExpected moderate · December
- Cozumel · east coastExpected moderate · December
- TulumExpected moderate · December
- Costa MayaExpected moderate · December
Going in December?All-inclusive resorts on usually light beaches
See the resortsSeaweed offshore of Cancún in December
For December, the median offshore floating-algae index is in the lower third of this area's monthly range.
Satellite archive through: