Negombo sits on Sri Lanka's west coast, north of Colombo, with three sites covering natural and artificial reef across a mid-range depth band. Maha Gala and Dakune Gala are current-influenced reef dives suited to intermediate divers, while the Air Filling Station site offers a gentler entry including a shore-access option for beginners, though reef boots are advised. Visibility varies, with the best conditions coming between November and April. Species recorded at area sites include blacktip reef sharks, green sea turtles, Napoleon wrasse, and nudibranchs.
Monthly water temperature across Negombo's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperature is warm year-round, peaking in April and May. Conditions are most settled from November to April; outside that window the southwest monsoon increases swell and can reduce visibility at all three sites, which already varies quite widely.
Water temperature around Negombo ranges from about 28°C in January to 30°C in April, based on satellite sea-temperature data for its dive sites.
With water around 28–30°C, a rash guard or 3mm shorty works in Negombo year-round.
Fin maps 3 sites in Negombo (3 scuba diving sites).
Across Negombo's dive sites, January, February, March, April, November and December are most often reported as the best months to visit.
1 more site to explore
