Last updated: August 21, 2025
In September, Santarem, Brazil, experiences a warm climate characterized by maximum temperatures reaching 34°C (93°F) and an average of 29°C (84°F), while the nights remain comfortably mild with a minimum of 24°C (75°F). This month sees 10 days of precipitation, accumulating a total of 69 mm (2.7 in), contributing to the lush surroundings typical of the region. With humidity levels around 40%, the weather is generally pleasant, making it an ideal time for outdoor activities and exploration of Santarem’s vibrant landscapes.
As September rolls into Santarem, Brazil, temperatures begin to hint at the warmer days ahead, marking an exhilarating transition in the region's climate. With a minimum of 24°C (75°F) and a maximum soaring to 34°C (93°F), the month balances comfortably between warmth and the occasional refreshing breeze. The average temperature climbs to a pleasant 29°C (84°F), reflecting an increase from the cooler preceding months. This upward trend in warmth prepares locals and visitors alike for the sun-kissed days to come, making September a vibrant time to experience the lush landscapes and cultural richness of this Amazonian gem.
September in Santarém, Brazil, marks a notable shift in precipitation patterns as the rainy season begins to wane. With just 69 mm (2.7 in) of rain across 10 days, September features one of the lowest rainfall totals of the year, following the stark decrease from August’s mere 79 mm (3.1 in). This decline continues a trend established in the dry months of July and August, where rainfall drops significantly compared to the earlier part of the year. The transition from lush, consistent rains in the first half to this drier spell suggests that locals may experience more sunshine as they prepare for the upcoming months, albeit with sporadic showers still gracing the landscape. As the year progresses, Santarém’s precipitation levels will begin to rise again, but for now, September offers a brief reprieve from the heavier downpours commonly associated with the region.
In September, Santarem, Brazil experiences a notable dip in humidity, averaging at a comfortable 40%. This considerable decrease marks one of the lowest points of the year, following the humid months of April and May, which boast averages of 86% and 90%, respectively. As the city transitions from the dampness of winter, the overall trend reveals a gradual decline in humidity from the soggy summer months through to the drier days of spring. By October, the humidity drops even further to 38%, continuing a consistent pattern of lower moisture as the year progresses. The change in humidity creates a more comfortable environment for both residents and visitors, making September a particularly pleasant time to experience Santarem's vibrant culture amidst its scenic landscapes.
September in Santarem, Brazil, maintains an extreme UV Index rating of 12, similar to the preceding months of August and June. This signifies that whether you're exploring the vibrant local scenery or relaxing outdoors, the risk of harm from unprotected sun exposure remains significant. Interestingly, after the peak months of January to April, which saw an Index of 15 and 16, there’s a slight dip toward late summer. However, with a consistent burn time of just 10 minutes, sun safety precautions are still paramount. For more information on UV levels and safety tips, check out Santarem UV Index.
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September in Santarém, Brazil, is a glorious time when sunshine bathes the region in warmth, boasting an impressive 336 hours of sunlight. This month continues the trend of the high summer months, following August's peak of 341 hours and slightly tapering off into October’s 333 hours. Overall, the sunshine hours trend increases steadily from May, which averages around 281 hours, peaking during the mid-year months of July and August. This consistency of bright days not only enhances the beauty of Santarém's landscapes but also invites both residents and visitors to revel in outdoor adventures under the welcoming sun.
As September rolls around in Santarem, Brazil, the likelihood of basking in sunny weather remains relatively high, with a 48% chance of sunshine. This marks a slight dip from the peak of 50% in August, but still showcases a notable departure from the gloom of the earlier months. The trend of increasing sunlight becomes more apparent as we move from the depths of winter, where the chances were as low as 19% in January, up to 44% in July and 42% in June. September promises a stunning backdrop for outdoor activities, making it an excellent time to enjoy the region before the atmospheric shift that leads into October’s 35% likelihood of sunlight. Overall, the pleasant weather in September offers a tantalizing glimpse of spring in the Southern Hemisphere, inviting both locals and tourists to soak up the sun.
In Santarem, Brazil, the rhythm of daylight remains notably consistent throughout the year. From January to April, residents enjoy a perfect balance of 12 hours of daylight each day, basking in the sun's glow. This uniformity continues as the days transition into August and September, where daylight again stabilizes at 12 hours. However, as the year progresses into May, June, and July, daylight dips slightly to 11 hours, hinting at a subtle shift towards the cooler months. This pattern showcases Santarem's unique tropical climate, where the relatively stable duration of sunlight allows for vibrant outdoor activities year-round.
As September arrives in Santarem, Brazil, a gentle shift in the atmosphere can be felt, marked by an increase in average wind speeds to 2.8 m/s (6 mph). This slight uptick from the preceding months not only heralds the transition into the breezier season but also evokes a sense of vitality in the air. Following a summer characterized by consistently calm winds hovering around 2.4 to 2.6 m/s, September's refreshing gusts can invigorate both the land and its inhabitants, setting the stage for the upcoming months as the winds maintain a steadier pace. While the winds calm again in October, it’s this momentary rise in September that invites both residents and visitors alike to embrace the lively spirit of the region.
Weather in Santarem varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santarem, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January showcase contrasting weather patterns. In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 34°C (93°F), with an average of 29°C (84°F) and relatively low humidity at 40%. The month sees around 69 mm (2.7 in) of precipitation over approximately 10 days. In stark contrast, January experiences cooler temperatures, with a minimum of 23°C (74°F) and a maximum of 31°C (88°F), averaging 26°C (80°F). However, the month is significantly wetter, yielding 351 mm (13.8 in) of rainfall over 24 days and higher humidity levels at 79%. These differences make January feel much more humid and rainy compared to the warmer and drier September. For more detailed information, you can check out Santarem weather in January.
September typically enjoys warmer temperatures compared to February, with averages around 29°C (84°F) and highs reaching up to 34°C (93°F). However, February brings a much wetter climate, with an average precipitation of 425 mm (16.7 in) spread over 26 days. Additionally, humidity levels are notably higher in February at 65%, compared to September's 40%. While both months have similar minimum temperatures, September generally offers a drier and sunnier experience. For more details, you can refer to Santarem weather in February.
September typically experiences warmer temperatures with averages around 29°C (84°F) and maximums reaching up to 34°C (93°F), while March is slightly cooler, averaging 26°C (80°F) and peaking at 32°C (90°F). However, March significantly differs in terms of precipitation, receiving a substantial 399 mm (15.7 in) over 28 days, compared to September's much lower 69 mm (2.7 in) over just 10 days. Additionally, humidity levels are notably higher in March at 68%, compared to September's 40%. For more detailed weather information in March, visit Santarem weather in March.
When comparing the weather between September and April, several notable differences emerge. September tends to be warmer, with temperatures ranging from a minimum of 24°C to a maximum of 34°C, and an average of 29°C. In contrast, April's temperatures are slightly cooler, averaging 26°C with a maximum of 31°C. However, April is characterized by significantly higher precipitation, with 429 mm over 29 days, compared to September's 69 mm over just 10 days. This leads to a stark contrast in humidity levels as well, with September at 40% and April soaring to 86%. For a more detailed look at April weather, you can visit Santarem weather in April.
In September, the weather tends to be warm and relatively dry, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 34°C (93°F), and an average of 29°C (84°F). The humidity is moderate at 40%, and with only 69 mm (2.7 in) of precipitation spread over 10 days, it's a much drier month compared to May. In contrast, May experiences significantly wetter conditions, characterized by an average temperature of 27°C (80°F) and maximums reaching 31°C (88°F). The high humidity at 90% and substantial rainfall of 359 mm (14.1 in) over 30 days makes it one of the rainiest months of the year. For a detailed look at the weather specifics, you can check Santarem weather in May.
Comparing the weather in September and June reveals distinct differences in temperature and precipitation. September boasts warmer temperatures, with averages reaching 29°C (84°F) and maximums of 34°C (93°F), while June has slightly cooler averages of 27°C (81°F) and maximums of 32°C (90°F). Additionally, September experiences significantly less rainfall, with only 69 mm (2.7 in) over about 10 days, compared to June's much wetter conditions, receiving 169 mm (6.7 in) across 25 days. This results in much higher humidity in June at 82%, compared to the more comfortable 40% in September. For more detailed insights, check out Santarem weather in June.
In comparing the weather between September and July, September generally experiences warmer temperatures, with a minimum of 24°C (75°F) and an average of 29°C (84°F), peaking at a maximum of 34°C (93°F). In contrast, July has slightly cooler temperatures, with a minimum of 23°C (74°F) and an average of 27°C (81°F), reaching a maximum of 33°C (91°F). However, July is characterized by significantly higher precipitation, totaling 137 mm (5.4 in) over 17 days, while September sees less rainfall at 69 mm (2.7 in) over just 10 days. Additionally, humidity levels are higher in July at 61%, compared to September's 40%. For a more detailed look, you can check out Santarem weather in July.
In comparing the weather of September and August, we find that both months have a minimum temperature of 24°C (75°F) and a maximum temperature of 34°C (93°F). However, September enjoys a slightly warmer average temperature of 29°C (84°F) compared to August's 28°C (83°F). While August experiences more precipitation, totaling 79 mm (3.1 in) over 9 days, September sees less rainfall at 69 mm (2.7 in) across 10 days. Additionally, humidity levels are higher in August at 46%, whereas September's humidity drops to 40%. For more detailed information, you can check Santarem weather in August.
In September, temperatures in the region typically range from a minimum of 24°C (75°F) to a maximum of 34°C (93°F), with an average temperature of 29°C (84°F). The month sees around 69 mm (2.7 in) of precipitation over 10 days, with a humidity level of 40%. In contrast, October experiences slightly warmer conditions, with a maximum temperature reaching 35°C (95°F) while the minimum and average temperatures remain the same as September. Rainfall increases to 87 mm (3.4 in) over 12 days, and humidity decreases marginally to 38%. For a closer look at the specific weather patterns, you can refer to Santarem weather in October.
In comparing the weather between September and November, both months feature similar temperature ranges, with September seeing a minimum of 24°C (75°F), an average of 29°C (84°F), and a maximum of 34°C (93°F). November maintains a comparable minimum temperature of 24°C (76°F) and an average of 28°C (83°F), with the same maximum temperature of 34°C (93°F). However, November experiences significantly more rainfall, with 190 mm (7.5 in) falling over 20 days compared to September's 69 mm (2.7 in) over just 10 days. Humidity remains relatively stable between the two months, with September at 40% and November slightly lower at 39%. For more detailed information, check out Santarem weather in November.
September and December in Santarem exhibit noticeable differences in weather patterns. While September offers a warm climate with temperatures ranging from a minimum of 24°C (75°F) to an average of 29°C (84°F) and a maximum of 34°C (93°F), December maintains similar high temperatures but sees a slight dip in the average to 27°C (81°F). However, December is characterized by significantly increased precipitation, with a staggering 359 mm (14.1 in) over 27 days, compared to September's 69 mm (2.7 in) over just 10 days. Additionally, humidity levels rise from 40% in September to 69% in December, making the latter month feel considerably more humid and damp. For a more detailed look at December's weather, you can visit Santarem weather in December.
As September unfolds in Santarém, the weather presents a warm and inviting atmosphere, marked by a maximum temperature of 34°C (93°F) and an average of 29°C (84°F). This month differs from others with a distinct blend of higher humidity at 40% and occasional rainfall—totaling 69 mm over roughly 10 days. This transitional period heralds the shift into the rainy season, providing relief from the intense heat of earlier months, while still offering ample sunshine. For more insights into Santarém's weather patterns throughout the year, visit Santarem Climate.