22.08
sat
sat
Day
82°F
E 15 mph
Precip.
23%
23%
Night
81°F
E 14 mph
Precip.
24%
24%
23.08
sun
sun
Day
82°F
E 15 mph
Precip.
25%
25%
Night
81°F
E 15 mph
Precip.
67%
67%
24.08
mon
mon
Day
82°F
E 14 mph
Precip.
56%
56%
Night
81°F
E 12 mph
Precip.
63%
63%
25.08
tue
tue
Day
82°F
E 14 mph
Precip.
61%
61%
Night
79°F
E 13 mph
Precip.
74%
74%
26.08
wed
wed
Day
81°F
E 13 mph
Precip.
65%
65%
Night
79°F
E 12 mph
Precip.
40%
40%
27.08
thu
thu
Day
82°F
E 14 mph
Precip.
66%
66%
Night
81°F
E 14 mph
Precip.
73%
73%
28.08
fri
fri
Day
82°F
E 14 mph
Precip.
69%
69%
Night
79°F
E 15 mph
Precip.
74%
74%
sea water
temperature
temperature
| Unawatuna |
monthly
weather
weather
| Unawatuna |
current
weather
weather
| Unawatuna |
14 days
forecast
forecast
| Unawatuna |
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 81.7°F. The highest and lowest sea temperatures during the month were 83.3°F and 80.6°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 83.4°F. The highest and lowest sea temperatures during the month were 84.6°F and 81.9°F.
Air temperature in Unawatuna, °F
Precipitation total in Unawatuna, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Unawatuna
Unawatuna on a weather map
Places in Sri Lanka:
Name
°F
24 Hours Forecast
Unawatuna
Local time: 20:04
August 22, saturday
2100
81°F
E
12 mph
12 mph
August 23, sunday
0000
81°F
E
14 mph
14 mph
0300
81°F
E
14 mph
14 mph
0600
81°F
E
14 mph
14 mph
0900
82°F
E
14 mph
14 mph
1200
82°F
E
15 mph
15 mph
1500
82°F
E
14 mph
14 mph
1800
81°F
E
13 mph
13 mph
