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Monthly climate in Polonnaruwa, North Central, Sri Lanka

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Polonnaruwa features a tropical monsoon climate (Am).Temperatures typically range between 25 °C (77 °F) and 30 °C (86 °F) through the year, but rarely can drop to 17 °C (63 °F) or can rise to as high as 39 °C (102 °F).The average annual precipitation amounts to about 1241 mm (48.8 inches) and receives 149 rainy days on the 1 mm (0.04 inches) threshold annually.Polonnaruwa enjoys an average of 3787 hours of sunshine throughout the year, and daylight varies from 11 hours 39 minutes to 12 hours 33 minutes per day.

Monthly average temperatures in Polonnaruwa, North Central, Sri Lanka §

The warmest months in Polonnaruwa are June, July and August, with daily mean temperatures ranging from 29 to 30 °C (85 - 86 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 25 to 26 °C (77 - 78 °F) throughout the day. On average each year, Polonnaruwa 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 Polonnaruwa, North Central, 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
(89°F)		 34°C
(93°F)		 36°C
(97°F)		 38°C
(101°F)		 39°C
(102°F)		 38°C
(101°F)		 39°C
(102°F)		 39°C
(102°F)		 39°C
(102°F)		 38°C
(100°F)		 36°C
(97°F)		 33°C
(91°F)
Mean maximum 31°C
(89°F)		 32°C
(91°F)		 35°C
(95°F)		 37°C
(99°F)		 37°C
(99°F)		 36°C
(97°F)		 38°C
(100°F)		 38°C
(100°F)		 38°C
(101°F)		 36°C
(96°F)		 34°C
(93°F)		 32°C
(90°F)
Average high 29°C
(85°F)		 30°C
(87°F)		 32°C
(91°F)		 35°C
(95°F)		 34°C
(94°F)		 35°C
(95°F)		 35°C
(95°F)		 35°C
(94°F)		 34°C
(94°F)		 33°C
(91°F)		 30°C
(87°F)		 30°C
(85°F)
Daily mean 25°C
(77°F)		 26°C
(78°F)		 27°C
(81°F)		 29°C
(84°F)		 29°C
(85°F)		 30°C
(86°F)		 30°C
(86°F)		 29°C
(85°F)		 29°C
(84°F)		 28°C
(82°F)		 26°C
(80°F)		 26°C
(78°F)
Average low 22°C
(71°F)		 22°C
(72°F)		 23°C
(74°F)		 25°C
(77°F)		 26°C
(79°F)		 27°C
(80°F)		 26°C
(80°F)		 26°C
(79°F)		 26°C
(78°F)		 25°C
(77°F)		 24°C
(75°F)		 23°C
(73°F)
Mean minimum 18°C
(65°F)		 19°C
(66°F)		 20°C
(69°F)		 22°C
(73°F)		 24°C
(76°F)		 25°C
(78°F)		 25°C
(77°F)		 25°C
(77°F)		 24°C
(75°F)		 23°C
(74°F)		 22°C
(72°F)		 21°C
(70°F)
Minimum 17°C
(63°F)		 17°C
(63°F)		 19°C
(66°F)		 20°C
(68°F)		 23°C
(74°F)		 25°C
(76°F)		 24°C
(76°F)		 24°C
(75°F)		 23°C
(74°F)		 23°C
(73°F)		 22°C
(71°F)		 20°C
(68°F)

Compare climate in Polonnaruwa with other places

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

Monthly average precipitation in Polonnaruwa, North Central, Sri Lanka §

Polonnaruwa usually has the most precipitation in October, November and December, with an average of 21 rainy days and 236 mm (9.3 inches) of precipitation per month.The driest months in Polonnaruwa are June, July and August. On average, 28 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Polonnaruwa, North Central, 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) 92 (3.6) 45 (1.8) 54 (2.1) 63 (2.5) 115 (4.5) 17 (0.7) 39 (1.5) 29 (1.1) 77 (3.1) 237 (9.3) 287 (11.3) 185 (7.3)
Average precipitation days (≥ 1 mm) 12 12 10 10 13 3 7 6 11 20 24 21

Monthly sunshine hours in Polonnaruwa, North Central, Sri Lanka §

The sunniest months in Polonnaruwa are March, July and August, when the sun shines an average of 10 hours 59 minutes a day.Least sunny months in Polonnaruwa: January, November and December receive an average of 9 hours 0 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Polonnaruwa, North Central, 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 260 307 340 337 331 336 343 338 317 308 270 297
Mean daily daylight hours 11h 42m 11h 51m 12h 4m 12h 17m 12h 28m 12h 33m 12h 31m 12h 21m 12h 8m 11h 55m 11h 44m 11h 39m

Solar UV radiation in Polonnaruwa, North Central, Sri Lanka §

Polonnaruwa 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 12. For more detailed information, check out our hourly Polonnaruwa UV Index data.

Average daily maximum UV levels by month for Polonnaruwa, North Central, 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 13 15 14 14 13 13 14 14 13 12 10