Sea temperature and swimming season in Sri Lanka

When the sea is warm enough to swim in 15 coastal cities in Sri Lanka.

City	Warmest	Coldest	Swimming season
Colombo	30.3°C Apr	28.0°C Jan	all year
Jaffna	30.7°C Apr	26.9°C Jan	all year
Moratuwa	30.4°C Apr	28.0°C Jan	all year
Negombo	30.4°C Apr	27.9°C Aug	all year
Trincomalee	30.2°C Apr	27.3°C Jan	all year
Galle	30.1°C Apr	27.9°C Jan	all year
Batticaloa	30.3°C Apr	27.3°C Jan	all year
Valvedditturai	30.6°C Apr	26.9°C Jan	all year
Matara	30.0°C Apr	27.7°C Aug	all year
Puttalam	30.5°C Apr	27.7°C Aug	all year
Kalutara	30.3°C Apr	28.0°C Jan	all year
Bentota	30.3°C Apr	27.9°C Jan	all year
Mannar	30.9°C Apr	27.4°C Jan	all year
Chilaw	30.4°C Apr	27.6°C Aug	all year
Hambantota	29.9°C Apr	27.5°C Aug	all year