BVI, Caribbean brace for increased sargassum this year

The BVI and other Caribbean countries could be in for a significant sargassum season this year, as regional forecasts point to unusually high seaweed levels across the Caribbean heading into the peak months.

Recent satellite data and scientific outlooks show that 2026 is shaping up to be a major sargassum year, with total volumes already exceeding historical averages and expected to increase in the coming months. Typically, Caribbean countries begin seeing increased sargassum arrivals between March and April, with the heaviest influxes occurring from late spring into summer and continuing through October. But the bloom has started earlier than usual this year, as experts say sargassum began appearing in parts of the Caribbean as early as January.

Based on current projections, scientists say sargassum levels are likely to continue building through the spring and peak in the middle of the year, before gradually declining later in the hurricane season.

For the BVI, the outlook suggests the territory should brace for recurring influxes in the months ahead. Past events show that even moderate blooms disrupt daily life and tourism, with sargassum clogging harbours and affecting marine activity, including operations at the Road Town ferry terminal.

Local health and environmental officials have also warned about the risks tied to heavy accumulations. In the past year, for example, decomposing sargassum has affected desalination systems in the territory, with authorities cautioning that it can alter the taste and smell of pipe-borne water and increase the risk of contamination.

Residents and tourism stakeholders have repeatedly raised concerns about the impact on beaches, fishing, and visitor experience, with government agencies acknowledging that the influx continues to pose challenges for coastal communities and the tourism sector.

While the exact scale of landings will depend on winds and currents, the combination of early activity and record regional volumes suggests the BVI is likely to see significant sargassum activity from April through October.