29.12
mon
mon
Day
82°F
E 9 mph
Precip.
73%
73%
Night
75°F
SW 4 mph
Precip.
100%
100%
30.12
tue
tue
Day
82°F
E 6 mph
Precip.
66%
66%
Night
77°F
SE 8 mph
Precip.
0%
0%
31.12
wed
wed
Day
82°F
SE 12 mph
Precip.
87%
87%
Night
77°F
SE 12 mph
Precip.
0%
0%
01.01
thu
thu
Day
79°F
SE 12 mph
Precip.
0%
0%
Night
77°F
SE 8 mph
Precip.
85%
85%
02.01
fri
fri
Day
81°F
E 6 mph
Precip.
83%
83%
Night
77°F
SE 4 mph
Precip.
51%
51%
03.01
sat
sat
Day
79°F
NW 5 mph
Precip.
100%
100%
Night
75°F
SW 2 mph
Precip.
24%
24%
04.01
sun
sun
Day
81°F
NE 4 mph
Precip.
100%
100%
Night
77°F
W 2 mph
Precip.
0%
0%
sea water
temperature
temperature
| Unawatuna |
monthly
weather
weather
| Unawatuna |
current
weather
weather
| Unawatuna |
14 days
forecast
forecast
| Unawatuna |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 82.4°F. The highest and lowest sea temperatures during the month were 83.7°F and 81.5°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 82.1°F. The highest and lowest sea temperatures during the month were 83.1°F and 81.7°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: 20:09
December 29, monday
2100
77°F
SE
6 mph
6 mph
December 30, tuesday
0000
75°F
SW
4 mph
4 mph
0300
75°F
SW
4 mph
4 mph
0600
75°F
SW
3 mph
3 mph
0900
81°F
S
2 mph
2 mph
1200
82°F
E
6 mph
6 mph
1500
81°F
E
8 mph
8 mph
1800
79°F
SE
9 mph
9 mph
