Last updated: August 21, 2025
In January, Manaus experiences a warm and humid climate, characterized by a maximum temperature reaching 34°C (93°F) and an average of 26°C (79°F). The minimum temperature hovers around 22°C (71°F), providing a balmy atmosphere. However, this tropical city also sees substantial precipitation, with 238 mm (9.4 in) of rain over approximately 23 days, contributing to the lush greenery that surrounds it. The humidity level remains high at 83%, creating a vibrant and tropical environment that's both captivating and challenging for visitors.
In January, Manaus experiences a warm tropical climate, with temperatures ranging from a mild 22°C (71°F) at night to a peak of 34°C (93°F) during the day. Throughout the month, the average temperature hovers around a comfortable 26°C (79°F), inviting both locals and visitors to enjoy the lush surroundings of the Amazon rainforest. As the year progresses, temperatures remain relatively stable, with only slight fluctuations in the daily highs and lows. Notably, August and September bring the highest extremes, with maximum temperatures soaring to 36°C (98°F). Overall, Manaus maintains its warm character, making it a year-round destination for those seeking heat and adventure in the heart of Brazil.
In January, Manaus experiences a significant rainfall, with 238 mm (9.4 in) of precipitation spread over approximately 23 days. This marks the beginning of the wet season, setting the stage for even heavier rains in the following months. February sees a slight increase to 242 mm (9.5 in), maintaining a steady pattern of frequent showers. However, by March, the skies unleash a more intense deluge, with precipitation jumping to 349 mm (13.7 in) over 28 days, signaling the peak of the rainfall season. As spring approaches, the rains persist with only minor fluctuations, peaking again in December with a staggering 356 mm (14.0 in). Contrastingly, the late dry months of June through August reveal a steep decline in both precipitation and rainy days, underscoring the seasonality of Manaus's humid tropical climate.
In January, Manaus, Brazil, experiences high humidity levels at 83%, setting the stage for the sultry conditions typical of the region. As the year progresses into February and March, humidity slightly decreases to 73% and 75%, respectively, offering a brief respite. However, by April, the humidity surges again to 85%, continuing to rise to a peak of 90% in May. As the wet season unfolds, humidity begins to decline rapidly, dropping to 71% in July and plummeting to a remarkable 32% by October. This stark contrast is evident as humidity levels fluctuate dramatically, with November and December bringing a gentle rise back to 41% and 83%. Overall, Manaus showcases a humid tropical climate, characterized by its dramatic seasonal shifts that paint a vivid picture of the region's weather patterns.
In January, Manaus, Brazil experiences an intense UV Index of 15, categorizing it under the extreme exposure level. With a mere 10 minutes of unprotected sun exposure leading to potential skin burns, this month marks the beginning of a series of high UV readings. The UV Index remains noticeably elevated through February to April, peaking at 16 during these months. As the year progresses into May, the UV Index slightly decreases to 13, yet remains within the extreme range, continuing to pose significant sun exposure risks. This trend of high UV levels persists almost uniformly throughout the year, with the Index rarely dipping below 11, emphasizing the importance of sun safety. For more detailed information on daily UV levels, visit Manaus UV Index.
UV Risk Categories
In January, Manaus basks in a delightful 206 hours of sunshine, setting the stage for the vibrant warm season ahead. As the months progress, the sun continues to shine brighter, with February offering a touch more at 207 hours. The longest days arrive in July, where residents and visitors can enjoy an impressive 327 hours, making it the sunniest month of the year. Following closely, August and September also shine brightly, with 324 and 310 hours respectively, while October begins a gradual decline. This gradual tapering off of daylight continues through late autumn, with November and December bringing 253 and 231 hours of sunshine, inviting a cozy close to the year. Overall, the trend showcases a spectacular sunny peak in mid-year, emphasizing Manaus as a sun-drenched destination for warmth and outdoor adventures.
In Manaus, Brazil, January marks the beginning of a weather trend that will shift significantly as the months progress. With a 15% chance of sunny weather, January offers limited opportunities for sunshine, setting the stage for a gradual increase as the year unfolds. As the days warm up, the likelihood of clear skies rises, particularly from May onwards, where it peaks in the drier months of July and August at 39% and 42%, respectively. This trend highlights a seasonal transition, with sunny days becoming increasingly prevalent as the region moves into the latter half of the year, providing ample chances to bask in the sun for those who plan their visits wisely.
In January, Manaus, Brazil, enjoys an ample 12 hours of daylight, a trend that continues consistently through February to April, providing ample sunlight for both locals and visitors to explore the vibrant city and its lush surroundings. However, as May rolls in, the daylight duration slightly diminishes to 11 hours, a rhythm that continues through June and July. Interestingly, this brief dip is followed by a return to 12 hours of daylight from August to November, offering a perfect balance of light for outdoor activities. By December, daylight returns to a steady 12 hours, rounding out the year with a comforting predictability that showcases Manaus’ enchanting tropical ambiance throughout the seasons.
In January, Manaus enjoys a gentle breeze with an average wind speed of 1.5 m/s (3 mph), creating a delightful atmosphere amidst its tropical warmth. As the months progress, wind speeds see a slight uptick in February but settle back to 1.5 m/s in March, maintaining a consistent calmness. The spring months from April to June witness a minor dip, marking the season with steady winds around 1.3 to 1.4 m/s. However, as the year continues into August, there is a noticeable increase, peaking back at 1.6 m/s. This mild variability in wind patterns highlights a tranquil climate throughout the year, inviting both locals and visitors to savor the city's lush greenery and vibrant culture under soothing breezes.
Weather in Manaus varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Manaus, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between January and February, both months in Manaus exhibit similar temperature ranges, with average temperatures remaining steady at 26°C (79°F). January tends to be slightly warmer overall, with a maximum temperature reaching 34°C (93°F), while February sees a peak of 33°C (92°F). Precipitation is high in both months, with January receiving 238 mm (9.4 in) over 23 days, and February slightly exceeding that with 242 mm (9.5 in) across 24 days. Notably, February experiences a drop in humidity to 73%, compared to January's higher humidity level of 83%. For more detailed insights, you can check Manaus weather in February.
In comparing the weather between January and March, both months exhibit warm temperatures, with January seeing a min temperature of 22°C (71°F), an average of 26°C (79°F), and a max of 34°C (93°F). March maintains similar temperature ranges; however, the maximum dips slightly to 33°C (93°F), while the minimum remains around 22°C (72°F). Notably, March experiences a significant increase in precipitation, totaling 349 mm (13.7 in) compared to January's 238 mm (9.4 in), and there are more rainy days in March, with precipitation recorded on 28 days versus 23 in January. The humidity also varies slightly, being higher in January at 83% compared to March's 75%. For more details on March weather, visit Manaus weather in March.
In January, the weather in Manaus is characterized by warm temperatures, with a minimum of 22°C (71°F) and a maximum reaching up to 34°C (93°F). The month sees considerable rainfall, amounting to 238 mm (9.4 in) over 23 days, and humidity levels are relatively high at 83%. In contrast, April experiences similar temperatures, with a consistent minimum of 22°C (72°F) and a slightly lower maximum of 33°C (92°F). However, it is also marked by increased precipitation, totaling 341 mm (13.4 in) over 29 days, along with a marginally higher humidity level of 85%. These factors make April slightly wetter and more humid compared to January. For more details, check out Manaus weather in April.
In January, the weather in Manaus features temperatures ranging from a minimum of 22°C (71°F) to a maximum of 34°C (93°F), with an average temperature of 26°C (79°F). However, it experiences significant rainfall, totaling 238 mm (9.4 in) over 23 days, and a humidity level of 83%. In contrast, May sees a similar temperature range—with a minimum of 22°C (72°F) and a maximum of 34°C—but an increased average temperature of 26°C (80°F). Rainfall in May is even higher, reaching 316 mm (12.5 in) over 29 days, and humidity rises to 90%. For more detailed information about the weather conditions in May, visit Manaus weather in May.
In January, temperatures in Manaus range from a minimum of 22°C (71°F) to a maximum of 34°C (93°F), with an average of 26°C (79°F). The month is characterized by significant rainfall, totaling 238 mm (9.4 in) over 23 days and high humidity at 83%. In contrast, June offers slightly milder conditions, with temperatures ranging from 22°C (72°F) to 33°C (91°F) and an average of 27°C (80°F). Although June experiences less rainfall—147 mm (5.8 in) over 22 days—it still maintains a high humidity level of 84%. For more detailed information, you can check Manaus weather in June.
In January, the weather in Manaus is characterized by warm temperatures, with a minimum of 22°C (71°F) and an average of 26°C (79°F), peaking at a maximum of 34°C (93°F). During this month, the region experiences significant rainfall, totaling 238 mm (9.4 in) over 23 days, and a high humidity level of 83%. In contrast, July sees slightly cooler temperatures, with minimums at 21°C (70°F) and averages of 27°C (81°F), while still reaching a maximum of 34°C (93°F). Rainfall decreases considerably to 87 mm (3.4 in) over 16 days, accompanied by lower humidity at 71%. For a more detailed look at Manaus weather during this month, visit Manaus weather in July.
In January, the weather in Manaus is characterized by higher humidity and substantial rainfall, with average temperatures ranging from 22°C to a maximum of 34°C (71°F to 93°F) and 238 mm of precipitation over 23 days. In contrast, August offers a drier climate with significantly less rainfall, averaging 59 mm over just 13 days, and warmer average temperatures, peaking at 36°C (98°F). The humidity also drops to 56% during August, making the weather feel less oppressive. For more detailed information, you can check Manaus weather in August.
In January, the weather is quite warm and humid, with average temperatures ranging from a minimum of 22°C (71°F) to a maximum of 34°C (93°F). This month experiences significant rainfall, totaling 238 mm (9.4 in) over approximately 23 days, contributing to a high humidity level of 83%. In contrast, September brings slightly warmer temperatures, with averages spanning from 22°C (73°F) to a scorching 36°C (98°F), but the lower humidity of 52% makes it feel more comfortable. Additionally, precipitation drops to 116 mm (4.6 in) over about 17 days, resulting in drier conditions compared to January. For more information, check out Manaus weather in September.
In comparing the weather of January and October, we find notable differences in temperature and humidity. January experiences a minimum of 22°C (71°F), an average of 26°C (79°F), and a maximum of 34°C (93°F), along with high humidity at 83% and significant precipitation of 238 mm (9.4 in) over 23 days. In contrast, October boasts slightly warmer temperatures, with a minimum of 22°C (71°F), an average of 28°C (82°F), and a maximum of 37°C (99°F). Precipitation is also lower in October, totaling 171 mm (6.7 in) over 20 days, and the humidity drops significantly to 32%. For more detailed insights on October weather, check out Manaus weather in October.
In comparing January and November weather, January typically experiences slightly lower temperatures, with an average of 26°C (79°F) compared to November's 27°C (81°F). However, November sees higher maximum temperatures, reaching up to 35°C (96°F) compared to January's 34°C (93°F). Precipitation levels are also notable, with January receiving 238 mm (9.4 in) over 23 days, while November has 219 mm (8.6 in) spread over 25 days, indicating a wetter start to the year. Additionally, humidity is significantly higher in January at 83%, whereas November boasts a much lower humidity level of 41%. For more detailed insights, check Manaus weather in November.
In both January and December, the weather in Manaus remains warm, with daily temperatures ranging from a minimum of 22°C (72°F) to a maximum of 34°C (93°F) and an average of 26°C (79°F). However, December experiences significantly more precipitation, with 356 mm (14.0 in) over 29 days, compared to January’s 238 mm (9.4 in) over 23 days. Humidity levels remain constant at 83% during both months, making the atmosphere feel quite similar in terms of stickiness. For more details on December weather, you can check Manaus weather in December.
As January unfolds in Manaus, the city experiences a vibrant blend of warmth and humidity, setting it apart from the cooler, drier months that precede it. With average temperatures hovering around a comfortable 26°C, it’s a time when the tropical heat becomes more pronounced, often reaching maximums of 34°C during the day. However, the charm of January comes with a twist—significant rainfall is a hallmark, with 23 days of precipitation that contribute to the lush, green landscape of the Amazon. This distinct weather pattern, characterized by 83% humidity and ample rainfall, beckons adventurers to explore the region's unique natural beauty. For a comprehensive overview of what to expect year-round, check out Manaus Climate.