July is a popular month to ask about Negombo Beach because conditions can shift week to week along this coast. Expect the water near 25.0°C, with daily variation from wind, tides and recent storms. We refresh the live value from Open-Meteo Marine every hour, so the headline above always reflects the current state of the Indian Ocean.
Negombo Beach sea temperature in July — averages 25.0°C
The sea at Negombo Beach in Sri Lanka averages 25.0°C during July, based on long-run climatology for the Indian Ocean. Use the live reading below for today's actual water and the monthly grid to compare with the rest of the year.
Average sea · July
25.0°C
hot · Excellent
Live water now
…
Recommended wetsuit
No wetsuit
At 25.0°C the water is warm enough to swim and surf in just a swimsuit or boardshorts.
Monthly comparison
Yes — ideal swimming weather · Negombo Beach
Can you swim at Negombo Beach in June? — 22.0°C water22.0°CCan you swim at Negombo Beach in July? — 25.0°C water25.0°CCan you swim at Negombo Beach in August? — 26.0°C water26.0°CCan you swim at Negombo Beach in September? — 24.0°C water24.0°CCan you swim at Negombo Beach in October? — 21.0°C water21.0°CCan you swim at Negombo Beach in November? — 18.0°C water18.0°C
Frequently asked questions
What is the average sea temperature at Negombo Beach in July?
Negombo Beach averages 25.0°C in July, based on long-run climatology for the Indian Ocean.
Is the sea warm enough to swim at Negombo Beach in July?
Yes, most swimmers find 25.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Negombo Beach in July?
No wetsuit needed.