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Monthly climate in Pematangsiantar, North Sumatra, Indonesia

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Pematangsiantar features a tropical rainforest climate (Af).Temperatures typically range between 24 °C (76 °F) and 25 °C (78 °F) through the year, but rarely can drop to 19 °C (66 °F) or can rise to as high as 33 °C (92 °F).The average annual precipitation amounts to about 3347 mm (131.8 inches) and receives 328 rainy days on the 1 mm (0.04 inches) threshold annually.Pematangsiantar enjoys an average of 3448 hours of sunshine throughout the year, and daylight varies from 11 hours 57 minutes to 12 hours 16 minutes per day.

Monthly average temperatures in Pematangsiantar, North Sumatra, Indonesia §

The warmest months in Pematangsiantar are April, May and June, with daily mean temperatures ranging from 25 to 25 °C (77 - 78 °F) throughout the day. The coldest temperatures usually occur in January, November and December, when daily mean temperatures range from 24 to 24 °C (76 - 76 °F) throughout the day. On average each year, Pematangsiantar experiences 326 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 Pematangsiantar, North Sumatra, Indonesia.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 31°C
(88°F)		 32°C
(90°F)		 32°C
(89°F)		 32°C
(90°F)		 32°C
(89°F)		 33°C
(92°F)		 33°C
(91°F)		 33°C
(91°F)		 31°C
(88°F)		 33°C
(91°F)		 31°C
(88°F)		 31°C
(87°F)
Mean maximum 30°C
(87°F)		 30°C
(87°F)		 31°C
(88°F)		 31°C
(89°F)		 31°C
(89°F)		 32°C
(89°F)		 32°C
(89°F)		 32°C
(89°F)		 31°C
(87°F)		 31°C
(88°F)		 30°C
(86°F)		 30°C
(86°F)
Average high 28°C
(83°F)		 29°C
(84°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(84°F)		 29°C
(84°F)		 28°C
(83°F)		 28°C
(83°F)
Daily mean 24°C
(76°F)		 24°C
(76°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(78°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(77°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(76°F)
Average low 21°C
(70°F)		 21°C
(70°F)		 22°C
(71°F)		 22°C
(72°F)		 22°C
(73°F)		 22°C
(72°F)		 22°C
(71°F)		 21°C
(71°F)		 21°C
(71°F)		 22°C
(71°F)		 22°C
(71°F)		 22°C
(71°F)
Mean minimum 20°C
(68°F)		 20°C
(68°F)		 20°C
(69°F)		 21°C
(70°F)		 21°C
(70°F)		 21°C
(70°F)		 20°C
(69°F)		 20°C
(69°F)		 20°C
(69°F)		 20°C
(69°F)		 21°C
(70°F)		 21°C
(69°F)
Minimum 19°C
(67°F)		 19°C
(67°F)		 20°C
(69°F)		 21°C
(69°F)		 21°C
(69°F)		 20°C
(69°F)		 20°C
(68°F)		 19°C
(66°F)		 20°C
(68°F)		 20°C
(69°F)		 21°C
(70°F)		 20°C
(69°F)

Compare climate in Pematangsiantar with other places

Compare temperature, precipitation, sunshine, UV index in Pematangsiantar, North Sumatra, Indonesia with other places around the world.

Monthly average precipitation in Pematangsiantar, North Sumatra, Indonesia §

Pematangsiantar usually has the most precipitation in May, September and November, with an average of 29 rainy days and 377 mm (14.8 inches) of precipitation per month.The driest months in Pematangsiantar are January, February and March. On average, 190 mm (7.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Pematangsiantar, North Sumatra, Indonesia.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) 210 (8.3) 176 (6.9) 185 (7.3) 230 (9.0) 344 (13.6) 281 (11.1) 224 (8.8) 251 (9.9) 379 (14.9) 339 (13.3) 407 (16.0) 322 (12.7)
Average precipitation days (≥ 1 mm) 23 23 26 28 30 28 26 27 29 29 30 29

Monthly sunshine hours in Pematangsiantar, North Sumatra, Indonesia §

The sunniest months in Pematangsiantar are March, July and August, when the sun shines an average of 10 hours 8 minutes a day.Least sunny months in Pematangsiantar: January, November and December receive an average of 8 hours 13 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Pematangsiantar, North Sumatra, Indonesia.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 238 294 315 283 286 302 315 311 291 290 239 278
Mean daily daylight hours 11h 57m 12h 0m 12h 5m 12h 9m 12h 14m 12h 16m 12h 15m 12h 11m 12h 6m 12h 2m 11h 58m 11h 57m

Solar UV radiation in Pematangsiantar, North Sumatra, Indonesia §

Pematangsiantar experiences the highest level of ultraviolet (UV) radiation in March, April and September, when the maximum UV index can reach values of 15 - 16, which corresponds to the Extreme category of sun exposure.June, July and December are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 13. For more detailed information, check out our hourly Pematangsiantar UV Index data.

Average daily maximum UV levels by month for Pematangsiantar, North Sumatra, Indonesia.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) 13 15 16 15 15 12 13 14 15 15 14 12