Swimming in Sri Lanka in august 2025 Sea temperature by city in august
Do you want to go to the beach in Sri Lanka in august 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in august in Sri Lanka by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in Sri Lanka in august 2025
Here, find the average sea temperature in Sri Lanka in august in several coastal cities.
West Coast in august
81°F
min: 79°F / max: 84°F
81°F
min: 79°F / max: 84°F
81°F
min: 78°F / max: 83°F
Dehiwala-Mount Lavinia
81°F
min: 79°F / max: 84°F
Panadura
81°F
min: 79°F / max: 84°F
Southern Coast in august
82°F
min: 80°F / max: 84°F
83°F
min: 80°F / max: 85°F
82°F
min: 80°F / max: 84°F
Ambalangoda
82°F
min: 80°F / max: 84°F
81°F
min: 79°F / max: 84°F
Hambantota
82°F
min: 80°F / max: 84°F
North in august
84°F
min: 82°F / max: 87°F
84°F
min: 83°F / max: 87°F
Mannar Island
83°F
min: 80°F / max: 85°F
Kayts
84°F
min: 82°F / max: 86°F
Point Pedro
84°F
min: 82°F / max: 87°F
Poonakari
84°F
min: 82°F / max: 86°F
East Coast in august
85°F
min: 83°F / max: 86°F
84°F
min: 82°F / max: 85°F
84°F
min: 82°F / max: 85°F
Akkaraipattu
83°F
min: 82°F / max: 85°F
Arisimale Beach
85°F
min: 83°F / max: 87°F
Arugam Bay
84°F
min: 82°F / max: 85°F
North West in august
81°F
min: 79°F / max: 83°F
81°F
min: 79°F / max: 83°F
Kalpitiya
81°F
min: 78°F / max: 83°F
Where should you go swimming in Sri Lanka in the month of august?
Swimming in Sri Lanka in august is ideal
In august in Sri Lanka swimming conditions are generally the same everywhere.
In august in Colombo, Galle, Jaffna, Trincomalee, Batticaloa, Chilaw, Kalutara, Mullaitivu, Negombo, Yala National Park, Pottuvil, Puttalam, Tangalle, Akkaraipattu, Ambalangoda, Arisimale Beach, Arugam Bay, Bentota, Hambantota, Hikkaduwa, Mannar Island, Kalkudah, Kallady Beach, Kallara beach (Thiriyai), Kalmunai, Kayts, Matara, Mirissa, Navalady, Okanda, Point Pedro, Poonakari, Thalayadi, Unakuruwa Beach, Uppuveli, Vakarai, Dehiwala-Mount Lavinia, Kalpitiya, Panadura and Weligama, swimming conditions are perfect! With water reaching a maximum of 84°F and an average of 81°F, going in the water (and staying there!) feels great.
Where to go swimming in Sri Lanka in august: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in august
Colombo
| August | |||
| Average sea temperature | 81°F | ||
| Minimum sea temperature | 79°F | ||
| Maximum sea temperature | 84°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 83°F | ||
| Precipitation | 23.9in | ||
| Number of days of precipitation | 23 jour(s) (75%) | ||
| Cloud cover | 56% | ||
| Our opinion | ideal swimming |
More information on swimming in Colombo in august
Galle
| August | |||
| Average sea temperature | 82°F | ||
| Minimum sea temperature | 80°F | ||
| Maximum sea temperature | 84°F | ||
| Average outside temperature | 83°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 81°F | ||
| Precipitation | 20in | ||
| Number of days of precipitation | 21 jour(s) (68%) | ||
| Cloud cover | 49% | ||
| Our opinion | ideal swimming |
More information on swimming in Galle in august
Jaffna
| August | |||
| Average sea temperature | 84°F | ||
| Minimum sea temperature | 82°F | ||
| Maximum sea temperature | 87°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 83°F | ||
| Precipitation | 4in | ||
| Number of days of precipitation | 5 jour(s) (17%) | ||
| Cloud cover | 32% | ||
| Our opinion | ideal swimming |
More information on swimming in Jaffna in august
Trincomalee
| August | |||
| Average sea temperature | 85°F | ||
| Minimum sea temperature | 83°F | ||
| Maximum sea temperature | 86°F | ||
| Average outside temperature | 88°F | ||
| Maximum outside temperature | 94°F | ||
| Minimum outside temperature | 83°F | ||
| Precipitation | 3.3in | ||
| Number of days of precipitation | 5 jour(s) (16%) | ||
| Cloud cover | 29% | ||
| Our opinion | ideal swimming |
More information on swimming in Trincomalee in august
Batticaloa
| August | |||
| Average sea temperature | 84°F | ||
| Minimum sea temperature | 82°F | ||
| Maximum sea temperature | 85°F | ||
| Average outside temperature | 88°F | ||
| Maximum outside temperature | 92°F | ||
| Minimum outside temperature | 85°F | ||
| Precipitation | 5.1in | ||
| Number of days of precipitation | 9 jour(s) (29%) | ||
| Cloud cover | 27% | ||
| Our opinion | ideal swimming |
More information on swimming in Batticaloa in august
List of coastal cities in Sri Lanka
| Colombo in august | ideal swimming |
| Galle in august | ideal swimming |
| Jaffna in august | ideal swimming |
| Trincomalee in august | ideal swimming |
| Batticaloa in august | ideal swimming |
| Chilaw in august | ideal swimming |
| Kalutara in august | ideal swimming |
| Mullaitivu in august | ideal swimming |
| Negombo in august | ideal swimming |
| Yala National Park in august | ideal swimming |
| Pottuvil in august | ideal swimming |
| Puttalam in august | ideal swimming |
| Tangalle in august | ideal swimming |
| Akkaraipattu in august | ideal swimming |
| Ambalangoda in august | ideal swimming |
| Arisimale Beach in august | ideal swimming |
| Arugam Bay in august | ideal swimming |
| Bentota in august | ideal swimming |
| Hambantota in august | ideal swimming |
| Hikkaduwa in august | ideal swimming |
| Mannar Island in august | ideal swimming |
| Kalkudah in august | ideal swimming |
| Kallady Beach in august | ideal swimming |
| Kallara beach (Thiriyai) in august | ideal swimming |
| Kalmunai in august | ideal swimming |
| Kayts in august | ideal swimming |
| Matara in august | ideal swimming |
| Mirissa in august | ideal swimming |
| Navalady in august | ideal swimming |
| Okanda in august | ideal swimming |
| Point Pedro in august | ideal swimming |
| Poonakari in august | ideal swimming |
| Thalayadi in august | ideal swimming |
| Unakuruwa Beach in august | ideal swimming |
| Uppuveli in august | ideal swimming |
| Vakarai in august | ideal swimming |
| Dehiwala-Mount Lavinia in august | ideal swimming |
| Kalpitiya in august | ideal swimming |
| Panadura in august | ideal swimming |
| Weligama in august | ideal swimming |