Measurements:
°C
°F
CURRENT WEATHER
21:46
Unawatuna
84°F
E 12 mph
Feels like: 90°F
Precip: 56%
World Resorts Sri Lanka Unawatuna Weather

7 Day Weather Forecast

09.11
fri
DAY
88°F
E 12 mph
precip
16%
NIGHT
84°F
E 15 mph
precip
41%
09.12
sat
DAY
86°F
E 13 mph
precip
41%
NIGHT
82°F
E 9 mph
precip
55%
09.13
sun
DAY
86°F
E 14 mph
precip
64%
NIGHT
82°F
E 15 mph
precip
38%
09.14
mon
DAY
86°F
E 14 mph
precip
59%
NIGHT
82°F
SE 13 mph
precip
76%
09.15
tue
DAY
82°F
SE 14 mph
precip
51%
NIGHT
82°F
E 17 mph
precip
41%
09.16
wed
DAY
82°F
E 14 mph
precip
68%
NIGHT
82°F
E 9 mph
precip
68%
09.17
thu
DAY
84°F
E 13 mph
precip
20%
NIGHT
82°F
NE 15 mph
precip
70%

Unawatuna Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Unawatuna was 28.6°F. The maximum and minimum values were 27.7°F and 29.2°F respectively.

Unawatuna on the Weather Map

Best Time to Visit Unawatuna
The most sunny months:
January 13 days
March 13 days
February 11 days
The most warm months:
April 92.3 °F
March 92.2 °F
February 90.7 °F
Warmest sea temperature:
April 89.8 °F
May 88.4 °F
March 88.2 °F
The most cold months:
August 87.7 °F
September 87.8 °F
July 88.2 °F
The most rainy months:
June 18 days
September 18 days
May 17 days
The most windy months:
July 12 mph
June 12 mph
August 12 mph
more details