The Solomon Islands National Emergency Operations Centre says there are reports of flooding in at least three areas in Guadalcanal province and parts of the capital Honiara are also under water.
The SIBC reports that food gardens and cocoa plantations surrounding the villages of Mbarande, Mbalasuna and Komukama have been swamped by flood waters.
The Makira-Ulawa Provincial Office also reported that heavy rain, high swells and strong winds are continuing to affect most parts of the province.
Parts of Honiara city have also experienced flooding due to disturbance of drainage systems.
A minor landslide also happened at Fulisango community which caused minor damage to one residential house.
The National Emergency Operation Centre was activated on standby as of 6pm on Thursday, following the active stationary monsoon trough lying over Solomon Islands.