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Monthly climate in Porto Velho, Brazil

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Porto Velho features a tropical monsoon climate (Am). Temperatures typically range between 26 °C (79 °F) and 28 °C (83 °F) through the year, but rarely can drop to 14 °C (57 °F) or can rise to as high as 37 °C (100 °F). The average annual precipitation amounts to about 2317 mm (91.2 inches) and receives 229 rainy days on the 1 mm (0.04 inches) threshold annually. Porto Velho enjoys an average of 3136 hours of sunshine throughout the year, and daylight varies from 11 hours 36 minutes to 12 hours 36 minutes per day.

Monthly average temperatures in Porto Velho, Brazil §

The warmest months in Porto Velho are August, September and October, with daily mean temperatures ranging from 27 to 28 °C (81 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 26 to 26 °C (79 - 79 °F) throughout the day. On average each year, Porto Velho experiences 328 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 Porto Velho, Brazil. 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 33°C
(92°F)		 33°C
(91°F)		 33°C
(92°F)		 33°C
(92°F)		 33°C
(92°F)		 34°C
(93°F)		 35°C
(96°F)		 37°C
(99°F)		 37°C
(100°F)		 36°C
(97°F)		 35°C
(95°F)		 34°C
(94°F)
Mean maximum 33°C
(91°F)		 32°C
(90°F)		 33°C
(91°F)		 32°C
(91°F)		 33°C
(91°F)		 33°C
(92°F)		 35°C
(95°F)		 36°C
(97°F)		 36°C
(98°F)		 35°C
(95°F)		 34°C
(93°F)		 33°C
(92°F)
Average high 30°C
(86°F)		 29°C
(85°F)		 30°C
(86°F)		 30°C
(87°F)		 30°C
(87°F)		 31°C
(88°F)		 32°C
(91°F)		 33°C
(93°F)		 34°C
(93°F)		 32°C
(90°F)		 31°C
(88°F)		 30°C
(86°F)
Daily mean 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(80°F)		 27°C
(81°F)		 28°C
(83°F)		 27°C
(81°F)		 27°C
(80°F)		 26°C
(79°F)
Average low 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 23°C
(74°F)		 23°C
(73°F)		 22°C
(72°F)		 23°C
(73°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)
Mean minimum 23°C
(73°F)		 23°C
(73°F)		 23°C
(73°F)		 22°C
(72°F)		 20°C
(69°F)		 20°C
(69°F)		 18°C
(64°F)		 18°C
(65°F)		 22°C
(72°F)		 22°C
(73°F)		 23°C
(73°F)		 23°C
(73°F)
Minimum 22°C
(72°F)		 22°C
(72°F)		 22°C
(73°F)		 19°C
(67°F)		 18°C
(65°F)		 17°C
(63°F)		 14°C
(58°F)		 14°C
(57°F)		 20°C
(68°F)		 22°C
(72°F)		 22°C
(73°F)		 22°C
(73°F)

Compare climate in Porto Velho with other places

Compare temperature, precipitation, sunshine, UV index in Porto Velho, Brazil with other places around the world.

Monthly average precipitation in Porto Velho, Brazil §

Porto Velho usually has the most precipitation in February, March and December, with an average of 28 rainy days and 352 mm (13.9 inches) of precipitation per month. The driest months in Porto Velho are June, July and August. On average, 21 mm (0.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Porto Velho, Brazil. 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) 268 (10.5) 369 (14.5) 315 (12.4) 268 (10.5) 119 (4.7) 27 (1.1) 3 (0.1) 31 (1.2) 82 (3.2) 185 (7.3) 277 (10.9) 372 (14.7)
Average precipitation days (≥ 1 mm) 24 27 29 28 18 6 0 5 13 23 27 29

Monthly sunshine hours in Porto Velho, Brazil §

The sunniest months in Porto Velho are June, July and August, when the sun shines an average of 10 hours 22 minutes a day. Least sunny months in Porto Velho: January, February and March receive an average of 6 hours 57 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Porto Velho, Brazil. 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 199 207 225 238 283 309 335 308 293 277 226 229
Mean daily daylight hours 12h 33m 12h 21m 12h 7m 11h 53m 11h 41m 11h 36m 11h 39m 11h 49m 12h 2m 12h 17m 12h 30m 12h 36m

Solar UV radiation in Porto Velho, Brazil §

Porto Velho experiences the highest level of ultraviolet (UV) radiation in March, April and November, when the maximum UV index can reach values of 15 - 16, which corresponds to the Extreme category of sun exposure. June, July and August 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 Porto Velho UV Index data.

Average daily maximum UV levels by month for Porto Velho, Brazil. 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) 15 15 16 15 12 10 10 11 12 14 15 14

Detailed Monthly Weather Insights for Porto Velho, Brazil

Discover in-depth weather details for every month in Porto Velho. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Porto Velho's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.