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Monthly climate in Santo Tome, Argentina

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Santo Tome features a humid subtropical climate (Cfa). Temperatures typically range between 15 °C (59 °F) and 27 °C (81 °F) through the year, but rarely can drop to -1 °C (31 °F) or can rise to as high as 40 °C (105 °F). The average annual precipitation amounts to about 1431 mm (56.3 inches) and receives 104 rainy days on the 1 mm (0.04 inches) threshold annually. Santo Tome enjoys an average of 3415 hours of sunshine throughout the year, and daylight varies from 10 hours 20 minutes to 13 hours 54 minutes per day.

Monthly average temperatures in Santo Tome, Argentina

The warmest months in Santo Tome are January, February and December, with daily mean temperatures ranging from 26 to 27 °C (79 - 81 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 15 to 17 °C (59 - 63 °F) throughout the day. On average each year, Santo Tome experiences 213 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 Santo Tome. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum40°C
(105°F)		40°C
(104°F)		39°C
(102°F)		34°C
(94°F)		31°C
(89°F)		30°C
(87°F)		31°C
(89°F)		35°C
(96°F)		35°C
(96°F)		38°C
(100°F)		38°C
(102°F)		39°C
(103°F)
Mean maximum37°C
(99°F)		37°C
(98°F)		36°C
(97°F)		32°C
(90°F)		30°C
(86°F)		27°C
(80°F)		30°C
(86°F)		33°C
(91°F)		34°C
(94°F)		35°C
(96°F)		36°C
(97°F)		38°C
(100°F)
Average high32°C
(90°F)		32°C
(89°F)		30°C
(86°F)		27°C
(81°F)		22°C
(73°F)		21°C
(70°F)		21°C
(69°F)		23°C
(73°F)		25°C
(77°F)		27°C
(82°F)		30°C
(86°F)		32°C
(89°F)
Daily mean27°C
(81°F)		26°C
(79°F)		24°C
(76°F)		21°C
(71°F)		18°C
(64°F)		16°C
(61°F)		15°C
(59°F)		17°C
(63°F)		20°C
(67°F)		22°C
(72°F)		24°C
(76°F)		26°C
(79°F)
Average low22°C
(72°F)		21°C
(70°F)		19°C
(67°F)		17°C
(63°F)		14°C
(57°F)		12°C
(54°F)		11°C
(52°F)		12°C
(54°F)		15°C
(59°F)		17°C
(63°F)		18°C
(65°F)		20°C
(68°F)
Mean minimum17°C
(63°F)		15°C
(59°F)		13°C
(56°F)		11°C
(52°F)		7°C
(46°F)		3°C
(38°F)		1°C
(35°F)		3°C
(38°F)		9°C
(48°F)		11°C
(52°F)		13°C
(56°F)		15°C
(59°F)
Minimum16°C
(61°F)		12°C
(54°F)		12°C
(54°F)		8°C
(46°F)		5°C
(42°F)		2°C
(35°F)		0°C
(33°F)		-1°C
(31°F)		6°C
(43°F)		10°C
(49°F)		11°C
(52°F)		12°C
(54°F)

Compare climate in Santo Tome with other places

Compare temperature, precipitation, sunshine, UV index in Santo Tome, Argentina with other places around the world.

Monthly average precipitation in Santo Tome, Argentina

Santo Tome usually has the most precipitation in January, March and May, with an average of 9 rainy days and 166 mm (6.6 inches) of precipitation per month. The driest months in Santo Tome are February, July and August. On average, 75 mm (3.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Santo Tome. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)161 (6.4)71 (2.8)167 (6.6)135 (5.3)171 (6.7)101 (4.0)78 (3.1)76 (3.0)118 (4.6)139 (5.5)135 (5.3)79 (3.1)
Average precipitation days (≥ 1 mm)1099710866111189

Monthly sunshine hours in Santo Tome, Argentina

The sunniest months in Santo Tome are March, November and December, when the sun shines an average of 11 hours 7 minutes a day. Least sunny months in Santo Tome: May, June and July receive an average of 7 hours 37 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Santo Tome. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours265314319269234224243282261296324379
Mean daily daylight hours13h 42m13h 2m12h 12m11h 21m10h 40m10h 20m10h 31m11h 7m11h 55m12h 47m13h 32m13h 54m

Solar UV radiation in Santo Tome, Argentina

Santo Tome experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure. May, June and July are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Santo Tome UV Index data.

Average daily maximum UV levels by month for Santo Tome. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)15141210655710131414