When is Sargassum Season in Cancun, Mexico?

The worst months for sargassum tend to be between June and September, but it's essential to keep in mind that conditions can...

Written by Travel Collective · 2 min read >
woman walking along wet sandy beach in windy day

Cancun can experience bad sargassum (seaweed) issues from time to time, particularly during the warmer months.

The sargassum season in Cancun typically starts around April and can last through November. However, the severity of sargassum varies from year to year, and it’s not consistently bad every month during this period.

What is sargassum?

Sargassum is a type of brown seaweed or macroalgae that floats on the ocean’s surface and can accumulate on shorelines, particularly in the Caribbean and Gulf of Mexico, including Cancun, Mexico. The seaweed forms large mats and can cause challenges for beachgoers and the local tourism industry.

When sargassum washes ashore in Cancun, it can create an unpleasant sight and smell, as well as make it difficult to swim or enjoy the beach. The decomposing sargassum releases a strong odor, which can be off-putting for vacationers. Furthermore, sargassum can also impact marine life by altering water quality, trapping marine animals, and smothering coral reefs and seagrass beds.

While sargassum is a natural occurrence and provides essential habitats for various marine species in the open ocean, the recent increase in its presence along the Caribbean coastlines is thought to be linked to climate change, ocean warming, and nutrient pollution from agricultural runoff. Local authorities and businesses in Cancun often work to remove sargassum from the beaches to minimize its impact on tourism.

Do hotels and beach clubs in Cancun, Mexico remove the sargassum daily?

Yes, many hotels and beach clubs in Cancun make efforts to remove sargassum from their beaches daily or regularly, depending on the severity of the influx. They understand the importance of maintaining clean and enjoyable beach areas for their guests and visitors, so they invest in the necessary resources and manpower to address the sargassum issue.

However, it is important to note that the efficiency and frequency of sargassum removal may vary between establishments. Some may be more proactive and successful in their efforts, while others may struggle to keep up, especially during periods of significant sargassum influx.

Local authorities and businesses also work together to mitigate the impact of sargassum on the beaches and the tourism industry. If you are concerned about sargassum during your visit to Cancun, it may be a good idea to check with your hotel or beach club regarding their sargassum management practices before booking your stay.

Month-to-Month Guide: Sargassum (seaweed) in Cancun, Mexico:

The worst months for sargassum tend to be between June and September, but it’s essential to keep in mind that conditions can change rapidly, and it’s difficult to predict the exact timing and intensity of sargassum influxes. It’s a good idea to check for updates on sargassum conditions before your trip if you’re concerned about it affecting your beach vacation.

SeasonTemperaturesRainSargassum / Seaweed
JanuaryHigh Season68°F – 82°F (20°C – 28°C)Low
FebruaryHigh Season70°F – 84°F (21°C – 29°C)Low
MarchHigh Season73°F – 86°F (23°C – 30°C)Low – Mild
AprilHigh Season75°F – 88°F (24°C – 31°C)Mild
MayLow Season75°F – 90°F (24°C – 32°C)Mild – High
JuneLow Season77°F – 90°F (25°C – 32°C)Mildly RainyHigh
JulyLow Season77°F – 90°F (25°C – 32°C)Mildly RainyHigh
AugustLow Season77°F – 90°F (25°C – 32°C)Mildly RainyHigh
SeptemberLow Season76°F – 89°F (24°C – 32°C)Mildly RainyMild – High
OctoberMid Season75°F – 87°F (24°C – 31°C)Mild
NovemberMid Season73°F – 85°F (23°C – 29°C)Low
DecemberHigh Season70°F – 83°F (21°C – 28°C)Low
  • The best time to visit Cancun (considered the “peak season”) is from October – April. This is when the temperatures have dropped a bit and the mild rainy season has paced.
  • Note that most tourists visit Cancun between December – April.
  • The off-season in Cancun is from May – September. It’s very hot.

Best Time of Year to Visit Cancun, Mexico:

When it comes to deciding the best time to visit Cancun, it mainly depends on your preferences and priorities. While the dry season (November to April) offers pleasant temperatures and minimal rainfall, the wet season (May to October) brings hotter temperatures and increased humidity. Nonetheless, Cancun remains a popular destination throughout the year, offering a range of experiences to suit different interests and travel styles.

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