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Monthly climate in Negombo, Western, Sri Lanka

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Negombo features a tropical rainforest climate (Af).Temperatures typically range between 27 °C (80 °F) and 28 °C (83 °F) through the year, but rarely can drop to 22 °C (72 °F) or can rise to as high as 33 °C (92 °F).The average annual precipitation amounts to about 2167 mm (85.3 inches) and receives 256 rainy days on the 1 mm (0.04 inches) threshold annually.Negombo enjoys an average of 3736 hours of sunshine throughout the year, and daylight varies from 11 hours 42 minutes to 12 hours 31 minutes per day.

Monthly average temperatures in Negombo, Western, Sri Lanka §

The warmest months in Negombo are March, April and May, with daily mean temperatures ranging from 28 to 28 °C (83 - 83 °F) throughout the day. The coldest temperatures usually occur in January, November and December, when daily mean temperatures range from 27 to 27 °C (80 - 81 °F) throughout the day. On average each year, Negombo experiences 329 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Negombo, Western, Sri Lanka.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 32°C
(90°F)		 33°C
(91°F)		 33°C
(92°F)		 32°C
(91°F)		 31°C
(88°F)		 31°C
(87°F)		 30°C
(86°F)		 29°C
(85°F)		 30°C
(86°F)		 30°C
(87°F)		 31°C
(88°F)		 31°C
(89°F)
Mean maximum 31°C
(88°F)		 32°C
(90°F)		 32°C
(90°F)		 31°C
(89°F)		 31°C
(88°F)		 29°C
(85°F)		 30°C
(86°F)		 29°C
(84°F)		 29°C
(85°F)		 30°C
(86°F)		 30°C
(87°F)		 31°C
(88°F)
Average high 30°C
(85°F)		 30°C
(87°F)		 30°C
(87°F)		 30°C
(87°F)		 30°C
(86°F)		 29°C
(84°F)		 29°C
(84°F)		 28°C
(83°F)		 28°C
(83°F)		 29°C
(84°F)		 29°C
(84°F)		 29°C
(85°F)
Daily mean 27°C
(80°F)		 27°C
(82°F)		 28°C
(83°F)		 28°C
(83°F)		 28°C
(83°F)		 28°C
(83°F)		 28°C
(82°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)
Average low 25°C
(76°F)		 25°C
(77°F)		 26°C
(79°F)		 27°C
(80°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(80°F)		 26°C
(80°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(78°F)		 25°C
(78°F)
Mean minimum 23°C
(73°F)		 23°C
(75°F)		 25°C
(77°F)		 26°C
(78°F)		 26°C
(79°F)		 26°C
(79°F)		 25°C
(78°F)		 25°C
(78°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(77°F)		 24°C
(76°F)
Minimum 22°C
(72°F)		 23°C
(73°F)		 24°C
(76°F)		 25°C
(78°F)		 25°C
(78°F)		 26°C
(78°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(77°F)		 24°C
(76°F)		 23°C
(74°F)

Compare climate in Negombo with other places

Compare temperature, precipitation, sunshine, UV index in Negombo, Western, Sri Lanka with other places around the world.

Monthly average precipitation in Negombo, Western, Sri Lanka §

Negombo usually has the most precipitation in May, October and November, with an average of 27 rainy days and 306 mm (12.1 inches) of precipitation per month.The driest months in Negombo are January, February and March. On average, 54 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Negombo, Western, Sri Lanka.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 44 (1.7) 25 (1.0) 94 (3.7) 130 (5.1) 281 (11.1) 241 (9.5) 160 (6.3) 181 (7.1) 227 (8.9) 330 (13.0) 307 (12.1) 146 (5.8)
Average precipitation days (≥ 1 mm) 5 5 17 25 29 29 25 27 26 29 24 15

Monthly sunshine hours in Negombo, Western, Sri Lanka §

The sunniest months in Negombo are March, April and July, when the sun shines an average of 10 hours 53 minutes a day.Least sunny months in Negombo: January, October and November receive an average of 9 hours 13 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Negombo, Western, Sri Lanka.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 270 311 335 334 311 319 332 325 304 299 278 311
Mean daily daylight hours 11h 44m 11h 52m 12h 4m 12h 16m 12h 26m 12h 31m 12h 28m 12h 19m 12h 8m 11h 56m 11h 46m 11h 42m

Solar UV radiation in Negombo, Western, Sri Lanka §

Negombo experiences the highest level of ultraviolet (UV) radiation in April, May and September, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure.January, November and December are in the Very High / Extreme exposure category. In these months, the maximum values of the UV index do not exceed 12. For more detailed information, check out our hourly Negombo UV Index data.

Average daily maximum UV levels by month for Negombo, Western, Sri Lanka.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 12 14 14 15 14 13 13 13 14 13 11 10