canIswim

Sea temperature and swimming season in Nigeria

When the sea is warm enough to swim in 8 coastal cities in Nigeria.

CityWarmestColdestSwimming season
Lagos 29.7°C Apr 25.8°C Aug all year
Ikeja 29.7°C Apr 25.8°C Aug all year
Irewe 29.7°C Apr 25.6°C Aug all year
Esuk Oron 30.0°C Mar 26.7°C Aug all year
Badagry 29.6°C Apr 25.5°C Aug all year
Bonny 29.9°C Mar 26.7°C Aug all year
Burutu 30.0°C Apr 26.5°C Aug all year
Twon-Brass 29.9°C Apr 26.7°C Aug all year

Season uses 19°C. Why that number, and where the data comes from