Data on phytoplankton abundance in Malacca Straits, west coast of Peninsular Malaysia in August 2019.

In this article, the abundance of phytoplankton community structure in Malacca Straits (MS); from Port Klang to Langkawi Island are reported. The datasets include data from 25 selected sampling sites that were acquired in August 2019 on board the RV Discovery's cruise expedition. These data contain details on the density of phytoplankton (cell L-1), total number of species, volume seawater filtered (in L) and the concentration factors (ml) in MS. Data presented in this article consists of 163 species, including unidentified species from 6 phyla of phytoplankton, along with the percentage of a major community group in MS.