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Monthly climate in Alto Mayo, San Martín, Peru

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Alto Mayo features a tropical monsoon climate (Am).Temperatures typically range between 18 °C (64 °F) and 19 °C (67 °F) through the year, but rarely can drop to 9 °C (49 °F) or can rise to as high as 28 °C (83 °F).The average annual precipitation amounts to about 2461 mm (96.9 inches) and receives 309 rainy days on the 1 mm (0.04 inches) threshold annually.Alto Mayo enjoys an average of 3311 hours of sunshine throughout the year, and daylight varies from 11 hours 46 minutes to 12 hours 26 minutes per day.

Monthly average temperatures in Alto Mayo, San Martín, Peru §

The warmest months in Alto Mayo are February, November and December, with daily mean temperatures ranging from 19 to 19 °C (67 - 67 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 18 to 18 °C (64 - 65 °F) throughout the day. On average each year, Alto Mayo experiences 75 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 Alto Mayo, San Martín, Peru.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 28°C
(83°F)		 27°C
(81°F)		 27°C
(80°F)		 27°C
(81°F)		 27°C
(81°F)		 26°C
(79°F)		 26°C
(79°F)		 28°C
(83°F)		 28°C
(83°F)		 28°C
(82°F)		 27°C
(81°F)		 27°C
(81°F)
Mean maximum 26°C
(80°F)		 26°C
(80°F)		 26°C
(79°F)		 26°C
(80°F)		 26°C
(80°F)		 26°C
(78°F)		 26°C
(78°F)		 26°C
(80°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(80°F)		 27°C
(80°F)
Average high 23°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 23°C
(74°F)		 23°C
(73°F)		 24°C
(75°F)		 24°C
(76°F)		 25°C
(76°F)		 24°C
(76°F)		 24°C
(75°F)
Daily mean 19°C
(66°F)		 19°C
(67°F)		 19°C
(66°F)		 19°C
(66°F)		 19°C
(66°F)		 18°C
(65°F)		 18°C
(64°F)		 18°C
(65°F)		 19°C
(66°F)		 19°C
(66°F)		 19°C
(67°F)		 19°C
(67°F)
Average low 15°C
(60°F)		 15°C
(60°F)		 15°C
(60°F)		 15°C
(59°F)		 15°C
(59°F)		 14°C
(57°F)		 13°C
(56°F)		 13°C
(56°F)		 14°C
(57°F)		 14°C
(58°F)		 15°C
(60°F)		 15°C
(60°F)
Mean minimum 13°C
(56°F)		 13°C
(56°F)		 14°C
(57°F)		 13°C
(56°F)		 13°C
(55°F)		 12°C
(54°F)		 11°C
(52°F)		 10°C
(51°F)		 12°C
(54°F)		 12°C
(55°F)		 13°C
(56°F)		 13°C
(56°F)
Minimum 13°C
(55°F)		 12°C
(54°F)		 13°C
(55°F)		 13°C
(55°F)		 12°C
(53°F)		 10°C
(51°F)		 10°C
(50°F)		 9°C
(49°F)		 10°C
(51°F)		 12°C
(53°F)		 12°C
(54°F)		 13°C
(55°F)

Compare climate in Alto Mayo with other places

Compare temperature, precipitation, sunshine, UV index in Alto Mayo, San Martín, Peru with other places around the world.

Monthly average precipitation in Alto Mayo, San Martín, Peru §

Alto Mayo usually has the most precipitation in January, March and December, with an average of 28 rainy days and 308 mm (12.1 inches) of precipitation per month.The driest months in Alto Mayo are July, August and September. On average, 83 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Alto Mayo, San Martín, Peru.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) 291 (11.5) 247 (9.7) 352 (13.9) 257 (10.1) 188 (7.4) 134 (5.3) 91 (3.6) 69 (2.7) 89 (3.5) 195 (7.7) 268 (10.5) 281 (11.1)
Average precipitation days (≥ 1 mm) 25 27 31 29 29 24 20 16 20 29 29 30

Monthly sunshine hours in Alto Mayo, San Martín, Peru §

The sunniest months in Alto Mayo are July, August and September, when the sun shines an average of 10 hours 18 minutes a day.Least sunny months in Alto Mayo: January, February and March receive an average of 7 hours 43 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Alto Mayo, San Martín, Peru.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 209 249 243 255 292 287 312 323 311 284 252 288
Mean daily daylight hours 12h 24m 12h 16m 12h 6m 11h 57m 11h 50m 11h 46m 11h 48m 11h 54m 12h 3m 12h 13m 12h 22m 12h 26m

Solar UV radiation in Alto Mayo, San Martín, Peru §

Alto Mayo experiences the highest level of ultraviolet (UV) radiation in February, March and April, when the maximum UV index can reach values of 17 - 18, which corresponds to the Extreme category of sun exposure.June, July and August 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 Alto Mayo UV Index data.

Average daily maximum UV levels by month for Alto Mayo, San Martín, Peru.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) 16 17 18 17 14 12 12 13 15 16 15 15