Last updated: August 21, 2025
January in Guarujá, Brazil, offers a warm tropical climate, with maximum temperatures reaching 32°C (90°F) and an average of 26°C (79°F). Nights cool down to a comfortable 21°C (69°F), ideal for evening strolls by the beach. However, this month is also characterized by significant rainfall, with total precipitation averaging 184 mm (7.2 in) over 18 days, creating a lush and vibrant landscape. The high humidity levels at 89% add to the tropical feel, making it a perfect time for visitors who enjoy the mix of sun and occasional showers in this coastal paradise.
In January, Guarujá, Brazil, welcomes the summer heat with mild minimum temperatures around 21°C (69°F) and a comfortable average of 26°C (79°F). The month reaches its peak with highs of 32°C (90°F), inviting beachgoers and sun-seekers to enjoy its stunning coastlines. As the month transitions into February, the warmth continues, with temperatures ranging from 21°C (69°F) to a maximum of 33°C (91°F), marking a slight increase in heat. This trend of consistent warmth persists through the early months of the year, with March showing similar highs. However, by April, there's a noticeable dip in the average to 23°C (74°F), hinting at the gradual shift towards cooler seasons. As the months unfold, temperatures start to decrease, with the lows dipping to 15°C (59°F) by May and remaining relatively stable through winter, before climbing back to the warmth and vibrancy of summer as the calendar turns to October. Overall, January stands out as a month rich in warmth, setting the stage for a lively beach culture that thrives on sunny days.
January sees Guaruja, Brazil, drenched in 184 mm (7.2 in) of precipitation over 18 days, marking the start of the year with notable rain. This early burst of moisture sets the stage for a wetter February, as the month peaks with 249 mm (9.8 in), experiencing the highest precipitation levels of the year. Following this pattern, March retains a substantial amount at 229 mm (9.0 in), but begins a slow descent towards drier months like April and May, where rainfall drops to 139 mm (5.5 in) and 130 mm (5.1 in), respectively. The trend suggests a gradual easing of rain as Guaruja transitions into drier winter months, with July witnessing the least precipitation at only 81 mm (3.2 in) over just 8 days. This fluctuation creates a dynamic climate, balancing wetness and dryness, which can deeply influence local life and activities throughout the year.
In January, Guaruja, Brazil, experiences its peak humidity at an impressive 89%, setting the stage for a lush and vibrant tropical atmosphere. As the months progress, there's a gradual decline in humidity levels, reaching their low point in October at 76%. However, this dip is short-lived, as humidity begins to rise again in November and December, culminating in another high in early January. Interestingly, the wetter months of January and February boast the highest humidity, while the peak summer months of July and August bring a noticeable decrease, emphasizing the unique seasonal patterns of this coastal paradise. Overall, Guaruja showcases a captivating blend of humidity fluctuations that contribute to its rich ecosystem and inviting climate.
In January in Guaruja, Brazil, the UV Index reaches a striking 15, categorizing it as extreme with a dangerously short burn time of just 10 minutes. This intensity marks the peak of the summer season, where similar levels persist into February and March, reflecting a consistent trend of extreme UV exposure during the warmer months. As the year progresses, the UV Index gradually declines, hitting a low of 6 in both June and July, indicating high exposure levels. However, with the approach of spring, the index climbs back into the extreme category, peaking again in November and December. The notable fluctuation between extreme and very high indexes throughout the year underscores the importance of effective sun protection in this coastal paradise. For more insights on sun safety, check out the Guaruja UV Index.
UV Risk Categories
In Guarujá, Brazil, January kicks off the year with a vibrant 256 hours of sunshine, laying the groundwork for a sunny season ahead. As the months progress, this glow intensifies, peaking in December with an impressive 317 hours, making it the sunniest month of the year. The trend showcases a steady increase in sunlight from January to March, where the allure of nearly 300 hours beckons beachgoers and sun-seekers alike. Interestingly, while June dips to the year’s lowest at 243 hours, the average remains robust for the rest of the year, with plenty of noteworthily sunlit days in November and October. This remarkable exposure to sunshine throughout the year highlights Guarujá's appeal as a prime destination for those craving warmth and light.
January in Guaruja, Brazil, presents a modest 16% chance of sunny weather, making it one of the least favorable months for sunshine. This trend sharply contrasts with the following month, February, which boasts a much higher 43% likelihood of clear skies. As the year progresses, the chances of sun steadily increase, peaking in July with an impressive 61%. Notably, from March through May, the probability of bright days remains consistently above 40%, indicating a shift toward sunnier conditions. As summer transitions into autumn, the likelihood of sunny weather begins to wane, returning to lower levels towards the year’s end. Overall, while January offers limited sun, the subsequent months hold promise for those seeking warmth and brightness in this beautiful coastal destination.
In Guarujá, Brazil, January shines as the month with maximum daylight, offering an impressive 13 hours of sunlight each day, perfect for beach outings and outdoor activities. As the year progresses into February and March, daylight slightly tapers to 12 hours, maintaining a bright and inviting atmosphere. By April, the days shorten further to 11 hours, signaling the onset of a gradual transition. This trend continues into the cooler months, with 10 hours of daylight from May through July, providing a mellow, cozy vibe. However, as winter gives way to spring, daylight begins to creep back up, returning to 11 hours in August and September, and reaching 12 hours in October. Eventually, Guarujá regains its luminous charm with 13 hours of sunshine in both November and December, capping off the year with vibrant and sun-soaked days.
In January, Guarujá experiences a refreshing average wind speed of 2.8 m/s (6 mph), setting a gentle tone for the year ahead. This mild breeze is part of a gradual trend, as February sees a slight dip to 2.7 m/s, but soon, the winds pick up throughout the months. By April, they reach 3.6 m/s (8 mph), hinting at the increasing vigor of the Atlantic breezes. As the year progresses towards August, the winds strengthen, averaging 3.9 m/s (9 mph), before peaking in October at a lively 4.7 m/s (11 mph). This dynamic shift showcases a fascinating seasonal transition, where the tranquil January air evolves into the invigorating winds of late summer, captivating both locals and visitors alike.
Weather in Guaruja varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Guaruja, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, temperatures in Guarujá typically range from a minimum of 21°C (69°F) to a maximum of 32°C (90°F), with an average temperature of 26°C (79°F). The month sees around 184 mm (7.2 in) of precipitation, falling on about 18 days, while humidity levels remain high at 89%. In contrast, February experiences slightly cooler average temperatures at 25°C (78°F), with a maximum of 33°C (91°F), but a similar minimum of 21°C (69°F). However, February is wetter, with precipitation totaling 249 mm (9.8 in) over 19 days, and humidity drops slightly to 87%. For more detailed information on Guarujá's February weather, you can check Guaruja weather in February.
In January, Guaruja experiences a warm tropical climate with temperatures ranging from a minimum of 21°C (69°F) to a maximum of 32°C (90°F), averaging around 26°C (79°F). The month is characterized by significant rainfall, totaling 184 mm (7.2 in) over 18 days, and high humidity levels at 89%. By March, the weather remains similarly warm, with temperatures still fluctuating between 21°C (69°F) and 32°C (90°F), but with a slight decrease in average temperature to 25°C (77°F). Precipitation increases to 229 mm (9.0 in) across 20 days, and humidity slightly drops to 86%. For a more detailed look at the climate during this time, check out Guaruja weather in March.
In comparing the weather between January and April, January tends to be warmer with average temperatures ranging from a minimum of 21°C (69°F) to a maximum of 32°C (90°F). In contrast, April has a slightly cooler average temperature, with minimums at 19°C (66°F) and maximums reaching 31°C (89°F). Additionally, January experiences more precipitation, totaling 184 mm (7.2 in) over 18 days, whereas April has less rain at 139 mm (5.5 in) across 15 days. Humidity levels in January are slightly higher at 89%, compared to 84% in April. For more details on April weather, check out Guaruja weather in April.
In January, the weather tends to be much warmer and more humid compared to May, with minimum temperatures around 21°C (69°F) and maximums reaching 32°C (90°F). This month experiences significant rainfall, averaging 184 mm (7.2 in) over 18 days, contributing to a high humidity level of 89%. Conversely, May has milder conditions, featuring a lower minimum temperature of 15°C (59°F) and a maximum temperature of 29°C (84°F). Precipitation is also reduced in May, with 130 mm (5.1 in) of rainfall over 13 days and a slightly lower humidity of 84%. For more details, you can check Guaruja weather in May.
In January, the weather is notably warmer with average temperatures ranging from a minimum of 21°C (69°F) to a maximum of 32°C (90°F), while June experiences cooler conditions, with averages between 15°C (60°F) and 30°C (86°F). Precipitation in January is considerably higher, totaling 184 mm (7.2 in) over 18 days, compared to June's 117 mm (4.6 in) across just 12 days. Additionally, January's humidity is more pronounced at 89%, whereas June maintains a lower level at 82%. For a more detailed look at weather conditions during this month, check out Guaruja weather in June.
The weather in January is significantly warmer and more humid compared to July. In January, temperatures range from a minimum of 21°C (69°F) to a maximum of 32°C (90°F), with an average of 26°C (79°F) and high humidity levels at 89%. This month also sees considerable rainfall, with 184 mm (7.2 in) of precipitation over 18 days. In contrast, July experiences cooler temperatures, ranging from a low of 11°C (53°F) to a high of 30°C (86°F), averaging 20°C (67°F). The precipitation in July is much less, totaling 81 mm (3.2 in) over just 8 days, and the humidity is lower at 80%. For more details, you can check Guaruja weather in July.
In January, the weather in Guarujá is characterized by higher temperatures, with a minimum of 21°C (69°F), an average of 26°C (79°F), and a maximum reaching 32°C (90°F). This month also sees significant precipitation, with about 184 mm (7.2 in) falling over 18 days, along with high humidity levels at 89%. In contrast, August brings cooler temperatures, where the minimum drops to 14°C (57°F), the average settles at 19°C (67°F), and the maximum reaches 30°C (87°F). August experiences less rainfall, totaling 133 mm (5.3 in) over 13 days, accompanied by lower humidity at 78%. For more detailed information on the weather specific to August, you can check out Guaruja weather in August.
In January, the weather is typically warmer and more humid, with average temperatures ranging from a pleasant 26°C (79°F) to a high of 32°C (90°F). This month often sees significant rainfall, accumulating around 184 mm (7.2 in) over 18 days, contributing to the high humidity of 89%. In contrast, September experiences milder temperatures, with averages between 15°C (60°F) and 33°C (92°F), and significantly lower humidity at 78%. Precipitation is also reduced to approximately 102 mm (4.0 in) over 13 days, making the climate more comfortable. For more insights into the weather during this month, you can check Guaruja weather in September.
January and October exhibit notable differences in weather while maintaining similar precipitation levels. In January, temperatures range from a minimum of 21°C (69°F) to a maximum of 32°C (90°F), with an average of 26°C (79°F). This month experiences high humidity at 89% and significant rainfall, with precipitation occurring over 18 days. Conversely, October presents slightly cooler conditions, with temperatures varying from 17°C (62°F) to a warmer maximum of 34°C (93°F) and an average of 22°C (72°F). The humidity is notably lower at 76%, and it sees similar precipitation of 183 mm (7.2 in) spread across 19 days. For more detailed insights, you can explore Guaruja weather in October.
In January, the weather is typically warmer, with minimum temperatures around 21°C (69°F) and average highs reaching up to 32°C (90°F). Additionally, January experiences higher humidity at 89% and more precipitation, totaling 184 mm (7.2 in) over 18 days. In contrast, November is slightly cooler, with minimum temperatures of 17°C (63°F) and an average temperature of 22°C (72°F). The precipitation amount in November is also lower, with 147 mm (5.8 in) over the same number of rainy days, and humidity is marginally reduced at 85%. For more specific information on the weather in November, you can check Guaruja weather in November.
January experiences slightly warmer temperatures compared to December, with an average of 26°C (79°F) and a maximum of 32°C (90°F), while December sees an average of 24°C (75°F) and a maximum of 30°C (87°F). Both months are characterized by high humidity, but January is a bit more humid at 89% compared to December's 87%. In terms of precipitation, January receives an average of 184 mm (7.2 in) over 18 days, whereas December has slightly less with 153 mm (6.0 in) over 19 days. For more detailed insights, check out Guaruja weather in December.
In January, Guaruja experiences warmer temperatures compared to other months, with a delightful average of 26°C (79°F) that invites beachgoers to embrace the sun. However, this summer month also brings an increased chance of rain, as evidenced by frequent precipitation over 18 days, resulting in a notable 184 mm (7.2 in) of rainfall. With humidity lingering around a stifling 89%, visitors should be prepared for both the heat and the occasional tropical shower. This dynamic weather makes January a unique blend of summer vibes and refreshing downpours, contrasting with the milder conditions seen in other parts of the year. For more insights into what to expect, check out the full details at Guaruja Climate.