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Monthly climate in San Isidro, Loreto, Peru

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification San Isidro features a tropical rainforest climate (Af).Temperatures typically range between 25 °C (77 °F) and 26 °C (79 °F) through the year, but rarely can drop to 15 °C (60 °F) or can rise to as high as 35 °C (95 °F).The average annual precipitation amounts to about 2875 mm (113.2 inches) and receives 306 rainy days on the 1 mm (0.04 inches) threshold annually.San Isidro enjoys an average of 3102 hours of sunshine throughout the year, and daylight varies from 11 hours 53 minutes to 12 hours 19 minutes per day.

Monthly average temperatures in San Isidro, Loreto, Peru §

The warmest months in San Isidro are September, October and November, with daily mean temperatures ranging from 26 to 26 °C (79 - 79 °F) throughout the day. The coldest temperatures usually occur in May, June and July, when daily mean temperatures range from 25 to 26 °C (77 - 78 °F) throughout the day. On average each year, San Isidro experiences 325 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 San Isidro, Loreto, 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 34°C
(94°F)		 35°C
(94°F)		 34°C
(94°F)		 33°C
(92°F)		 33°C
(92°F)		 33°C
(91°F)		 33°C
(91°F)		 35°C
(95°F)		 35°C
(95°F)		 34°C
(94°F)		 34°C
(93°F)		 34°C
(94°F)
Mean maximum 33°C
(92°F)		 33°C
(92°F)		 33°C
(92°F)		 33°C
(91°F)		 32°C
(91°F)		 32°C
(89°F)		 32°C
(90°F)		 33°C
(92°F)		 34°C
(94°F)		 34°C
(94°F)		 33°C
(92°F)		 33°C
(92°F)
Average high 30°C
(85°F)		 30°C
(86°F)		 30°C
(86°F)		 30°C
(86°F)		 29°C
(85°F)		 29°C
(85°F)		 30°C
(85°F)		 30°C
(87°F)		 31°C
(88°F)		 31°C
(87°F)		 30°C
(87°F)		 30°C
(86°F)
Daily mean 26°C
(78°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(78°F)		 25°C
(78°F)		 25°C
(77°F)		 26°C
(78°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)
Average low 23°C
(74°F)		 23°C
(74°F)		 23°C
(74°F)		 23°C
(74°F)		 23°C
(74°F)		 23°C
(73°F)		 22°C
(72°F)		 22°C
(73°F)		 23°C
(74°F)		 23°C
(74°F)		 24°C
(75°F)		 23°C
(74°F)
Mean minimum 22°C
(72°F)		 22°C
(73°F)		 22°C
(73°F)		 22°C
(72°F)		 22°C
(71°F)		 21°C
(71°F)		 19°C
(66°F)		 19°C
(66°F)		 22°C
(72°F)		 22°C
(72°F)		 22°C
(73°F)		 22°C
(72°F)
Minimum 22°C
(71°F)		 22°C
(71°F)		 22°C
(72°F)		 21°C
(70°F)		 20°C
(68°F)		 19°C
(67°F)		 16°C
(61°F)		 15°C
(60°F)		 21°C
(70°F)		 22°C
(71°F)		 22°C
(72°F)		 22°C
(72°F)

Compare climate in San Isidro with other places

Compare temperature, precipitation, sunshine, UV index in San Isidro, Loreto, Peru with other places around the world.

Monthly average precipitation in San Isidro, Loreto, Peru §

San Isidro usually has the most precipitation in March, April and December, with an average of 29 rainy days and 325 mm (12.8 inches) of precipitation per month.The driest months in San Isidro are July, August and September. On average, 152 mm (6.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Isidro, Loreto, 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) 275 (10.8) 284 (11.2) 329 (13.0) 323 (12.7) 245 (9.7) 186 (7.3) 159 (6.3) 121 (4.8) 175 (6.9) 211 (8.3) 245 (9.6) 322 (12.7)
Average precipitation days (≥ 1 mm) 24 26 30 28 27 24 22 20 24 25 27 29

Monthly sunshine hours in San Isidro, Loreto, Peru §

The sunniest months in San Isidro are July, August and September, when the sun shines an average of 9 hours 40 minutes a day.Least sunny months in San Isidro: January, February and November receive an average of 7 hours 40 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Isidro, Loreto, 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 218 233 248 241 248 268 303 299 287 269 238 244
Mean daily daylight hours 12h 18m 12h 12m 12h 6m 12h 0m 11h 55m 11h 53m 11h 54m 11h 58m 12h 4m 12h 10m 12h 16m 12h 19m

Solar UV radiation in San Isidro, Loreto, Peru §

San Isidro experiences the highest level of ultraviolet (UV) radiation in February, March and April, when the maximum UV index can reach values of 16 - 17, 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 12. For more detailed information, check out our hourly San Isidro UV Index data.

Average daily maximum UV levels by month for San Isidro, Loreto, 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) 15 16 17 16 13 12 11 12 14 14 13 13