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Monthly climate in Guaruja, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Guaruja features a humid subtropical climate (Cfa). Temperatures typically range between 19 °C (67 °F) and 26 °C (79 °F) through the year, but rarely can drop to 11 °C (53 °F) or can rise to as high as 34 °C (93 °F). The average annual precipitation amounts to about 1848 mm (72.8 inches) and receives 187 rainy days on the 1 mm (0.04 inches) threshold annually. Guaruja enjoys an average of 3300 hours of sunshine throughout the year, and daylight varies from 10 hours 39 minutes to 13 hours 34 minutes per day.

Monthly average temperatures in Guaruja, Brazil

The warmest months in Guaruja are January, February and March, with daily mean temperatures ranging from 25 to 26 °C (77 - 79 °F) throughout the day. The coldest temperatures usually occur in July, August and September, when daily mean temperatures range from 19 to 21 °C (67 - 70 °F) throughout the day. On average each year, Guaruja experiences 121 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 Guaruja. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum32°C
(90°F)		33°C
(91°F)		32°C
(90°F)		31°C
(89°F)		29°C
(84°F)		30°C
(86°F)		30°C
(86°F)		30°C
(87°F)		33°C
(92°F)		34°C
(93°F)		31°C
(87°F)		30°C
(87°F)
Mean maximum31°C
(88°F)		30°C
(86°F)		30°C
(86°F)		29°C
(84°F)		27°C
(82°F)		27°C
(80°F)		29°C
(84°F)		27°C
(81°F)		31°C
(88°F)		29°C
(84°F)		28°C
(82°F)		29°C
(85°F)
Average high27°C
(81°F)		26°C
(80°F)		26°C
(80°F)		24°C
(76°F)		23°C
(74°F)		23°C
(73°F)		22°C
(71°F)		21°C
(70°F)		22°C
(73°F)		23°C
(74°F)		23°C
(74°F)		25°C
(77°F)
Daily mean26°C
(79°F)		25°C
(78°F)		25°C
(77°F)		23°C
(74°F)		22°C
(71°F)		21°C
(70°F)		20°C
(67°F)		19°C
(67°F)		21°C
(70°F)		22°C
(72°F)		22°C
(72°F)		24°C
(75°F)
Average low25°C
(76°F)		24°C
(75°F)		24°C
(75°F)		22°C
(72°F)		20°C
(68°F)		19°C
(67°F)		18°C
(64°F)		18°C
(64°F)		19°C
(67°F)		21°C
(69°F)		21°C
(70°F)		23°C
(73°F)
Mean minimum22°C
(72°F)		22°C
(72°F)		22°C
(71°F)		19°C
(67°F)		17°C
(63°F)		17°C
(63°F)		14°C
(57°F)		15°C
(59°F)		17°C
(63°F)		18°C
(65°F)		18°C
(65°F)		20°C
(68°F)
Minimum21°C
(69°F)		21°C
(69°F)		21°C
(69°F)		19°C
(66°F)		15°C
(59°F)		15°C
(60°F)		11°C
(53°F)		14°C
(57°F)		15°C
(60°F)		17°C
(62°F)		17°C
(63°F)		19°C
(66°F)

Compare climate in Guaruja with other places

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

Monthly average precipitation in Guaruja, Brazil

Guaruja usually has the most precipitation in January, February and March, with an average of 19 rainy days and 221 mm (8.7 inches) of precipitation per month. The driest months in Guaruja are June, July and September. On average, 100 mm (3.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Guaruja. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)184 (7.2)249 (9.8)229 (9.0)139 (5.5)130 (5.1)117 (4.6)81 (3.2)133 (5.3)102 (4.0)183 (7.2)147 (5.8)153 (6.0)
Average precipitation days (≥ 1 mm)18192015131281313191819

Monthly sunshine hours in Guaruja, Brazil

The sunniest months in Guaruja are March, November and December, when the sun shines an average of 9 hours 53 minutes a day. Least sunny months in Guaruja: January, June and August receive an average of 8 hours 8 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Guaruja. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours256265297291274243275249274261294317
Mean daily daylight hours13h 24m12h 52m12h 11m11h 29m10h 56m10h 39m10h 48m11h 18m11h 57m12h 39m13h 15m13h 34m

Solar UV radiation in Guaruja, Brazil

Guaruja 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 High / Very High exposure category. In these months, the maximum values of the UV index do not exceed 8. For more detailed information, check out our hourly Guaruja UV Index data.

Average daily maximum UV levels by month for Guaruja. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)15141211866911131415