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Monthly climate in Jaffna, Sri Lanka

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Jaffna features a tropical savanna climate (As).Temperatures typically range between 26 °C (79 °F) and 29 °C (85 °F) through the year, but rarely can drop to 23 °C (74 °F) or can rise to as high as 32 °C (90 °F).The average annual precipitation amounts to about 1345 mm (53.0 inches) and receives 151 rainy days on the 1 mm (0.04 inches) threshold annually.Jaffna enjoys an average of 3832 hours of sunshine throughout the year, and daylight varies from 11 hours 33 minutes to 12 hours 39 minutes per day.

Monthly average temperatures in Jaffna, Sri Lanka §

The warmest months in Jaffna are April, May and June, with daily mean temperatures ranging from 29 to 29 °C (85 - 85 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 26 to 26 °C (79 - 80 °F) throughout the day. On average each year, Jaffna 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 Jaffna, 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 29°C
(84°F)		 30°C
(86°F)		 31°C
(87°F)		 32°C
(89°F)		 32°C
(90°F)		 31°C
(88°F)		 31°C
(89°F)		 31°C
(88°F)		 31°C
(88°F)		 30°C
(86°F)		 29°C
(85°F)		 29°C
(84°F)
Mean maximum 28°C
(83°F)		 28°C
(84°F)		 30°C
(87°F)		 31°C
(89°F)		 32°C
(89°F)		 30°C
(87°F)		 31°C
(88°F)		 30°C
(87°F)		 30°C
(87°F)		 30°C
(86°F)		 29°C
(85°F)		 28°C
(83°F)
Average high 27°C
(81°F)		 27°C
(82°F)		 29°C
(85°F)		 30°C
(87°F)		 30°C
(87°F)		 30°C
(86°F)		 30°C
(86°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(84°F)		 28°C
(83°F)		 27°C
(81°F)
Daily mean 26°C
(79°F)		 26°C
(80°F)		 28°C
(82°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(84°F)		 28°C
(84°F)		 28°C
(83°F)		 28°C
(82°F)		 27°C
(81°F)		 26°C
(80°F)
Average low 25°C
(77°F)		 25°C
(78°F)		 27°C
(80°F)		 28°C
(83°F)		 28°C
(84°F)		 29°C
(84°F)		 28°C
(83°F)		 28°C
(82°F)		 27°C
(81°F)		 27°C
(80°F)		 26°C
(79°F)		 26°C
(78°F)
Mean minimum 24°C
(76°F)		 24°C
(76°F)		 25°C
(78°F)		 26°C
(80°F)		 27°C
(81°F)		 28°C
(82°F)		 26°C
(80°F)		 26°C
(80°F)		 26°C
(79°F)		 25°C
(78°F)		 25°C
(78°F)		 25°C
(77°F)
Minimum 24°C
(75°F)		 23°C
(74°F)		 25°C
(77°F)		 25°C
(78°F)		 27°C
(80°F)		 26°C
(80°F)		 26°C
(79°F)		 26°C
(79°F)		 25°C
(78°F)		 25°C
(77°F)		 25°C
(77°F)		 24°C
(76°F)

Compare climate in Jaffna with other places

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

Monthly average precipitation in Jaffna, Sri Lanka §

Jaffna usually has the most precipitation in October, November and December, with an average of 21 rainy days and 290 mm (11.4 inches) of precipitation per month.The driest months in Jaffna are February, March and April. On average, 21 mm (0.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Jaffna, 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) 96 (3.8) 17 (0.7) 18 (0.7) 29 (1.2) 56 (2.2) 32 (1.3) 62 (2.4) 65 (2.5) 100 (3.9) 220 (8.7) 396 (15.6) 254 (10.0)
Average precipitation days (≥ 1 mm) 8 4 5 6 13 7 13 13 17 23 24 18

Monthly sunshine hours in Jaffna, Sri Lanka §

The sunniest months in Jaffna are March, April and May, when the sun shines an average of 11 hours 16 minutes a day.Least sunny months in Jaffna: January, November and December receive an average of 9 hours 4 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Jaffna, 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 264 311 346 344 346 335 342 333 322 314 266 303
Mean daily daylight hours 11h 36m 11h 48m 12h 3m 12h 19m 12h 33m 12h 39m 12h 36m 12h 24m 12h 9m 11h 53m 11h 40m 11h 33m

Solar UV radiation in Jaffna, Sri Lanka §

Jaffna experiences the highest level of ultraviolet (UV) radiation in March, April 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 11. For more detailed information, check out our hourly Jaffna UV Index data.

Average daily maximum UV levels by month for Jaffna, 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) 11 13 14 15 13 12 13 13 14 12 11 10