Sea water temperature in Sri Lanka in September

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In September warmest sea in Sri Lanka is usually observed in the following locations: Pasikuda, Batticaloa, Jafna.

Table below shows average sea water temperature in September for the last three years at all Sri Lanka marine resorts.

Place name	September 2023	September 2022	September 2021
Pasikuda	29.2°C	28.9°C	29.0°C
Batticaloa	29.2°C	28.9°C	29.1°C
Jafna	29.1°C	29.0°C	29.3°C
Bentota	28.8°C	28.0°C	28.5°C
Beruwela	28.8°C	28.0°C	28.5°C
Trincomalee	28.8°C	28.4°C	28.7°C
Kalutara	28.8°C	28.1°C	28.4°C
Induruwa	28.8°C	27.9°C	28.5°C
Negombo	28.8°C	27.9°C	28.5°C
Ahungalla	28.7°C	27.8°C	28.4°C
Wadduwa	28.7°C	28.0°C	28.4°C
Colombo	28.7°C	27.9°C	28.5°C
Panadura	28.7°C	27.9°C	28.4°C
Dehiwala Mount Lavinia	28.7°C	27.9°C	28.4°C
Marissa	28.7°C	27.2°C	27.7°C
Balapitiya	28.7°C	27.7°C	28.4°C
Weligama	28.7°C	27.3°C	27.7°C
Marawila	28.7°C	27.9°C	28.4°C
Koggalla	28.6°C	27.3°C	27.8°C
Habarana	28.6°C	28.3°C	28.6°C
Dikwella	28.6°C	27.1°C	27.6°C
Tangalle	28.4°C	27.0°C	27.5°C
Hambantota	28.4°C	27.0°C	27.6°C
Halle	28.3°C	27.3°C	28.1°C
Unawatuna	28.3°C	27.3°C	28.1°C
Hikkaduwa	28.2°C	27.5°C	28.4°C