Measurements:
°C
°F
Negombo
88°F
NE 7 mph
Feels like: 96°F
Precip: 100%
World Resorts Sri Lanka Negombo Weather

Negombo Sea Water Temperature

Current Sea Water Temperature:
+91.8°F
Maximum Sea Water Temperature in May: 93.6°F
Minimum Sea Water Temperature in May: 86.0°F
Average water temperature in May: 89.4°F

Sea Water Temperature for the Last 10 Days:

May 09 91.8°F May 04 91.2°F
May 08 91.6°F May 03 91.0°F
May 07 91.4°F May 02 91.8°F
May 06 91.6°F May 01 91.8°F
May 05 91.0°F April 30 91.8°F

When is the Warmest Sea for Negombo?

According to our data for the last three years for Negombo 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: 2026 2025 2024

The average sea surface temperature in April 2026 for Negombo was 91.4°F. The maximum and minimum values were 90.4°F and 92.4°F respectively.

Sea Water Temperature in May

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Negombo was 90.0°F. The maximum and minimum values were 88.4°F and 91.2°F respectively.

Sea Water Temperature in March

Select Year: 2026 2025 2024

The average sea surface temperature in March 2026 for Negombo was 89.2°F. The maximum and minimum values were 86.6°F and 91.6°F respectively.

Best Time to Visit Negombo
The most sunny months:
January 18 days
February 18 days
March 16 days
The most warm months:
April 94.0 °F
March 93.9 °F
February 92.8 °F
Warmest sea temperature:
April 90.5 °F
May 89.4 °F
March 88.8 °F
The most cold months:
August 88.8 °F
September 88.9 °F
July 89.0 °F
The most rainy months:
June 15 days
October 14 days
July 14 days
The most windy months:
June 13 mph
July 12 mph
August 12 mph

Negombo on the Weather Map

Sri Lanka Resorts:
NAME
Ahungalla +88
Bentota +88
Beruwela +88
Colombo +86
Halle +88
Hambantota +88
Hikkaduwa +88
Marawila +88
Marissa +88
Negombo +88
Pasikuda +90
Tangalle +88
Trincomalee +90
Unawatuna +88
Weligama +86
24 Hours Weather Forecast
Negombo
Local time: 15:55
09 may, saturday
1800 84°F
N
6 mph
2100 82°F
NW
10 mph
10 may, sunday
0000 80°F
W
7 mph
0300 80°F
NW
2 mph
0600 82°F
NE
4 mph
0900 86°F
E
5 mph
1200 88°F
E
7 mph
1500 86°F
E
9 mph