13.09
sun
sun
Day
82°F
E 14 mph
Precip.
26%
26%
Night
79°F
E 14 mph
Precip.
34%
34%
14.09
mon
mon
Day
82°F
E 15 mph
Precip.
13%
13%
Night
81°F
SE 14 mph
Precip.
24%
24%
15.09
tue
tue
Day
79°F
E 21 mph
Precip.
76%
76%
Night
77°F
E 17 mph
Precip.
90%
90%
16.09
wed
wed
Day
77°F
E 15 mph
Precip.
95%
95%
Night
77°F
E 16 mph
Precip.
87%
87%
17.09
thu
thu
Day
77°F
E 18 mph
Precip.
88%
88%
Night
79°F
NE 15 mph
Precip.
76%
76%
18.09
fri
fri
Day
81°F
E 14 mph
Precip.
71%
71%
Night
79°F
E 12 mph
Precip.
73%
73%
19.09
sat
sat
Day
81°F
E 14 mph
Precip.
72%
72%
Night
79°F
E 12 mph
Precip.
63%
63%
20.09
sun
sun
Day
82°F
E 15 mph
Precip.
53%
53%
Night
79°F
E 15 mph
Precip.
81%
81%
21.09
mon
mon
Day
81°F
E 17 mph
Precip.
75%
75%
Night
81°F
E 19 mph
Precip.
80%
80%
22.09
tue
tue
Day
81°F
E 17 mph
Precip.
76%
76%
Night
79°F
E 16 mph
Precip.
74%
74%
23.09
wed
wed
Day
81°F
E 18 mph
Precip.
69%
69%
Night
81°F
E 17 mph
Precip.
64%
64%
24.09
thu
thu
Day
82°F
E 16 mph
Precip.
70%
70%
Night
81°F
E 19 mph
Precip.
80%
80%
25.09
fri
fri
Day
81°F
E 19 mph
Precip.
78%
78%
Night
81°F
E 19 mph
Precip.
71%
71%
sea water
temperature
temperature
| Unawatuna |
monthly
weather
weather
| Unawatuna |
current
weather
weather
| Unawatuna |
7 days
forecast
forecast
| Unawatuna |
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: 01:27
September 13, sunday
0300
79°F
E
14 mph
14 mph
0600
79°F
E
14 mph
14 mph
0900
79°F
SE
14 mph
14 mph
1200
82°F
E
14 mph
14 mph
1500
82°F
E
13 mph
13 mph
1800
81°F
E
13 mph
13 mph
2100
79°F
E
12 mph
12 mph
September 14, monday
0000
79°F
E
14 mph
14 mph
