Nigeria — Sea Water Temperature and Annual Ranges
Up-to-date sea water temperatures for the coasts of Nigeria. Learn about today’s conditions, monthly averages, and how the surrounding seas and oceans vary by season. We find every place where you can swim and show you the water temperature there today and throughout the year.
Sea Water Temperature Along the Coast
Chart of Average Temperature Changes Over the Last 60 Days
Places with the Warmest Sea Water Today
The Most Popular Seaside Places
Coastal Seas and Oceans
Water Temperature and Swimming Overview
Regions and Map
Water Temperature Trends
Nigeria’s coastline stretches along the Gulf of Guinea for roughly 850 kilometers, giving the country a tropical maritime climate with warm sea surface temperatures throughout the year. Typical coastal water temperatures generally sit between about 24 and 29 °C (75 and 84 °F). The coolest conditions tend to occur during the harmattan and early dry season from December to February, when sea temperatures can fall toward the mid-20s Celsius (around 24–26 °C / 75–79 °F). Warmer values are more common in the late dry and wet seasons from March through October, when near-shore waters often rise to roughly 27–29 °C (81–84 °F) and occasionally approach 30 °C (86 °F) in sheltered lagoons and shallow bays.
Swimming Conditions
Swimming is possible year-round along many of Nigeria’s beaches and bays because of these consistently warm temperatures, but conditions vary and local caution is advised. Popular recreational beaches and island spots cater to swimmers, yet factors such as strong currents near river mouths, tidal shifts, limited lifeguard services, and localized pollution from urban runoff or oil-related incidents in the Niger Delta can make some areas hazardous at times. During heavy rains, runoff increases turbidity and contamination, and authorities may temporarily close beaches after storms or pollution events. For safer swimming, choose well-frequented beaches, observe posted warnings, avoid swimming alone or near estuary channels, and check local advisories before entering the water.