Measurements:
°C
°F
Unawatuna
84°F
E 19 mph
Feels like: 92°F
Precip: 100%
World Resorts Sri Lanka Unawatuna Weather

Unawatuna Sea Water Temperature

Current Sea Water Temperature:
+84.2°F
Maximum Sea Water Temperature in July: 88.4°F
Minimum Sea Water Temperature in July: 82.8°F
Average water temperature in July: 85.6°F

Sea Water Temperature for the Last 10 Days:

July 17 84.2°F July 12 84.4°F
July 16 84.2°F July 11 84.6°F
July 15 84.2°F July 10 85.2°F
July 14 84.2°F July 09 85.8°F
July 13 84.6°F July 08 86.4°F

When is the Warmest Sea for Unawatuna?

According to our data for the last three years for Unawatuna the highest average sea water temperature was in April, May and March.

Average Water Temperature by Month, °F

Sea Water Temperature in April

Select Year: 2025 2024 2023

The average sea surface temperature in April 2025 for Unawatuna was 89.5°F. The maximum and minimum values were 88.4°F and 89.8°F respectively.

Sea Water Temperature in May

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Unawatuna was 88.5°F. The maximum and minimum values were 87.6°F and 90.0°F respectively.

Sea Water Temperature in March

Select Year: 2025 2024 2023

The average sea surface temperature in March 2025 for Unawatuna was 88.6°F. The maximum and minimum values were 87.8°F and 89.8°F respectively.

Best Time to Visit Unawatuna
The most sunny months:
January 13 days
March 13 days
February 11 days
The most warm months:
March 92.5 °F
April 92.5 °F
February 91.1 °F
Warmest sea temperature:
April 89.7 °F
May 88.4 °F
March 88.3 °F
The most cold months:
September 87.9 °F
August 88.0 °F
July 88.5 °F
The most rainy months:
June 18 days
September 18 days
August 17 days
The most windy months:
July 12 mph
June 12 mph
August 12 mph

Unawatuna on the Weather Map

Sri Lanka Resorts:
NAME
Ahungalla +84
Bentota +84
Beruwela +84
Colombo +84
Halle +84
Hikkaduwa +84
Kalutara +84
Marissa +86
Negombo +84
Pasikuda +96
Tangalle +86
Trincomalee +94
Unawatuna +84
Wadduwa +86
Weligama +86
24 Hours Weather Forecast
Unawatuna
Local time: 12:37
18 jul, friday
1500 84°F
E
19 mph
1800 82°F
E
20 mph
2100 82°F
E
21 mph
19 jul, saturday
0000 82°F
E
20 mph
0300 82°F
E
21 mph
0600 84°F
E
18 mph
0900 84°F
E
18 mph
1200 86°F
E
18 mph

Looking for the Best Resort?