27.08
thu
thu
Day
81°F
NE 16 mph
Precip.
14%
14%
Night
81°F
NE 17 mph
Precip.
53%
53%
28.08
fri
fri
Day
81°F
NE 16 mph
Precip.
22%
22%
Night
81°F
NE 17 mph
Precip.
45%
45%
29.08
sat
sat
Day
81°F
NE 15 mph
Precip.
25%
25%
Night
81°F
NE 17 mph
Precip.
59%
59%
30.08
sun
sun
Day
81°F
NE 15 mph
Precip.
54%
54%
Night
81°F
NE 15 mph
Precip.
33%
33%
31.08
mon
mon
Day
81°F
NE 15 mph
Precip.
20%
20%
Night
81°F
NE 15 mph
Precip.
25%
25%
01.09
tue
tue
Day
81°F
NE 15 mph
Precip.
21%
21%
Night
81°F
NE 16 mph
Precip.
21%
21%
02.09
wed
wed
Day
81°F
NE 15 mph
Precip.
23%
23%
Night
81°F
NE 16 mph
Precip.
32%
32%
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 82.7°F. The highest and lowest sea temperatures during the month were 84.7°F and 81.5°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 83.6°F. The highest and lowest sea temperatures during the month were 84.4°F and 82.2°F.
Air temperature in Negombo, °F
Precipitation total in Negombo, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Negombo
Negombo on a weather map
Places in Sri Lanka:
Name
°F
24 Hours Forecast
Negombo
Local time: 09:15
August 27, thursday
1200
81°F
NE
16 mph
16 mph
1500
81°F
NE
17 mph
17 mph
1800
81°F
NE
16 mph
16 mph
2100
81°F
NE
16 mph
16 mph
August 28, friday
0000
81°F
NE
17 mph
17 mph
0300
81°F
NE
18 mph
18 mph
0600
81°F
NE
17 mph
17 mph
0900
81°F
NE
15 mph
15 mph
