September Weather in Trairi, Brazil

Last updated: August 21, 2025

In September, Trairi, Brazil, offers a delightful climate characterized by a maximum temperature of 31°C (89°F) and an average of 27°C (81°F), ensuring warmth under the tropical sun. The month sees a minimum temperature of 24°C (76°F), providing comfortable evenings for outdoor activities. With only 7 mm (0.3 in) of rain over the course of one day, visitors can enjoy predominantly dry weather, while the humidity sits at a relatively high 74%, creating a pleasantly warm atmosphere. This makes September an excellent time to explore the captivating natural beauty and vibrant culture of Trairi.

September Temperature in Trairi

In September, Trairi, Brazil, welcomes the onset of spring with pleasantly warm temperatures, characterized by a minimum of 24°C (76°F) and a maximum of 31°C (89°F). The average temperature remains steady at 27°C (81°F), indicating a consistent warmth throughout the month. This slight increase in nighttime warmth from previous months, along with a maximum that mirrors the overall trend of the year, suggests that the region is well on its way to the hotter spell ahead. Visitors can expect comfortable days perfect for beach outings and nature explorations, making September an ideal time to experience Trairi's vibrant beauty.

September Weather in Trairi: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Trairi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trairi, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec818180818181808181818282
Data source: Temperature data for Trairi generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Trairi

September in Trairi, Brazil, marks a significant shift in the precipitation patterns as the region transitions into its drier months. With only 7 mm (0.3 inches) of rainfall recorded over a mere 1 day, this month stands in stark contrast to the heavier downpours of previous months like April and February, which saw over 300 mm. As the lush summer rains wane, September sets an arid tone, signaling a period of relative dryness that precedes the light rains of October. This decline in precipitation not only influences local agriculture but also shapes the landscape, as the vibrant green from the wet season gradually gives way to more subdued hues.

September Precipitation Trends in Trairi

The chart displays monthly precipitation patterns in Trairi, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Trairi, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec922672583031526944107111952
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Trairi

In September, Trairi, Brazil, experiences a notable shift in humidity levels, averaging 74%—one of the lowest points of the year. Following the summer months, which see humidity peaking at 87% in March, there's a gradual decline that reaches its nadir in September. This dip signals a transition toward the drier months of October and November, where humidity remains relatively low, hovering around 75% and 77%, respectively. Overall, the trend indicates that as the dry season approaches, residents can expect a reprieve from the high humidity that characterizes the earlier months.

September Average Humidity in Trairi

This chart illustrates the average monthly humidity levels in Trairi, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Trairi is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%87%86%85%81%75%74%74%75%77%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Trairi

As September arrives in Trairi, Brazil, the UV Index remains high at 13, categorizing the sun's intensity as extreme and maintaining a consistent burn time of just 10 minutes for unprotected skin. This month marks a slight decrease from the peak UV Index values observed earlier in the year, with both January and February reaching 14 and March and April hitting 15. However, the need for sun protection does not wane; residents and visitors should remain vigilant against UV exposure throughout the month. As the season transitions, it’s essential to stay informed about the UV Index and take necessary precautions by checking the latest updates at Trairi UV Index.

Maximum UV Index Levels in Trairi for September

The chart shows the monthly maximum UV Index (UVI) for Trairi in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Trairi typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141415151311111213131313
Data source: Trairi September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Trairi

September in Trairi, Brazil, shines brightly with an impressive 345 hours of sunshine, reflecting a peak in the region's stunning late-winter weather. As the transition from the cooler months to spring unfolds, daylight hours have steadily increased since the mid-year lows of 321 hours in June and July. This growth continues a positive trend that has been ongoing since late summer, where August enjoyed 349 hours of sunshine, setting the stage for a glorious September. The promise of longer, sun-filled days not only invites locals and tourists to bask in the warmth but also signifies the onset of more vibrant outdoor activities, making it a perfect time to experience the natural beauty of Trairi. As the year progresses toward October's anticipated 358 hours, September stands out as a vibrant bridge to the sun-drenched days ahead, highlighting the enchanting allure of this coastal paradise.

Monthly Sunshine Duration in Trairi: September Highlighted

The September sunshine duration represents the total number of hours Trairi experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec264h275h314h283h321h321h341h349h345h358h346h345h
Data source: Trairi September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Trairi During September

September in Trairi, Brazil, marks a delightful transition into sunnier weather, with a *prominent *chance of sunshine reaching 72%. As we move from the winter months, the trends clearly show an upward trajectory; the likelihood of sunny days has consistently grown since the rainy season, reflecting a welcoming shift from the 31% chance in January. This month not only holds strong sun potential but also paves the way to October's still-impressive 66% likelihood, making it an ideal time for outdoor enthusiasts and beachgoers to relish the sun-soaked beauty of Trairi. It's a season where vibrant skies and warm days become more predictable, inviting you to immerse yourself in the gorgeous landscape.

Percentage of Sunny Days in September in Trairi

The chart illustrates the percentage of sunny days in Trairi throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Trairi experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec31%31%23%44%46%65%63%71%72%66%62%40%
Data source: Trairi September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Trairi in September

In Trairi, Brazil, the daylight duration exhibits a striking consistency throughout the year, predominantly hovering around 12 hours. As we transition into September, the days return to this ideal balance, shedding the slightly reduced hours that characterize the earlier months of the year. Notably, from May to August, daylight dips to 11 hours, but the shift back to 12 hours in September signals a welcome return to abundant sunlight. This rhythm of daylight not only highlights the region's equatorial climate but also emphasizes the natural ebb and flow of seasons, creating a vibrant backdrop for outdoor activities and local life. As we move toward October, Trairi maintains this generous daylight, ensuring the warmth and energy of the sun continue to illuminate the beauty of this coastal paradise.

Average Daylight Hours in Trairi for September

The chart illustrates the variation in daylight duration in Trairi throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 16m12h 11m12h 6m12h 1m11h 57m11h 55m11h 56m11h 59m12h 4m12h 10m12h 15m12h 17m
Data source: Trairi daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Trairi

In September, Trairi, Brazil, experiences a noticeable peak in wind activity, with average wind speeds reaching 6.9 m/s (15 mph). This uptick continues the trend established in the preceding months, where the wind gradually picks up from a relatively calm 3.9 m/s in March to a more dynamic flow by late summer. The months of July and August already hint at this seasonal change, with wind speeds climbing to 5.9 m/s and 6.8 m/s respectively. As the warm weather lingers, September marks a transition where coastal breezes become increasingly pronounced, ushering in a spirited atmosphere that not only enhances the landscape but also invigorates outdoor activities. Following this month, wind speeds begin to taper slightly, suggesting that summer's robust energy is gradually yielding to the calmer conditions of autumn.

Average September Wind Speed in Trairi

The chart displays monthly wind speed patterns in Trairi, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.64.73.94.44.44.95.96.86.9 m/s6.45.95.9
Data source: Trairi September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Trairi Compares to Other Months

Weather in Trairi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Trairi, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January share similar temperature ranges, with both months exhibiting minimum temperatures around 24°C (75°F) and average highs of 31°C (88-89°F). However, September is significantly drier, experiencing only 7 mm of precipitation over just one day, while January sees a substantial increase in rainfall, totaling 92 mm across 18 days. Additionally, January's humidity levels are higher at 84%, compared to September's 74%. For more details, you can check Trairi weather in January.

September and February both feature warm temperatures, with minimums around 24°C (75°F to 76°F), average highs of 27°C (81°F), and maximums peaking at 31°C (88°F to 89°F). However, the weather in February dramatically contrasts with September due to significantly higher precipitation levels, totaling 266 mm (10.5 in) over 26 days, compared to only 7 mm (0.3 in) on just 1 day in September. Additionally, February's humidity is noticeably higher at 85%, compared to September's 74%, contributing to a much wetter and more humid climate. For more details on February's conditions, you can visit Trairi weather in February.

September and March exhibit quite contrasting weather patterns despite their similar temperature averages. In September, temperatures range from a minimum of 24°C (76°F) to a maximum of 31°C (89°F), accompanied by low precipitation of just 7 mm (0.3 in) over only one day, resulting in a relatively dry atmosphere with a humidity level of 74%. In contrast, March experiences the same temperature range but is marked by a significant increase in rainfall, totaling 258 mm (10.1 in) across 29 days, leading to much higher humidity levels at 87%. This stark difference highlights March as a notably wetter month compared to the drier September. For more details on the weather, you can check Trairi weather in March.

In comparing the weather conditions between September and April, we see a striking contrast. Both months share similar temperature ranges, with minimums around 24°C (76°F), averages near 27°C (81°F), and maximums reaching up to 31°C (89°F in September and 88°F in April). However, September experiences much lower precipitation, with only 7 mm (0.3 in) of rain over just 1 day, leading to a humidity level of 74%. In stark contrast, April is characterized by significantly higher rainfall, totaling 303 mm (11.9 in) over 28 days, resulting in elevated humidity at 86%. For more details on the weather conditions in April, you can visit Trairi weather in April.

When comparing the weather in September and May, both months exhibit similar temperature ranges, with minimums around 24°C (75-76°F), daily averages at 27°C (81°F), and maximums reaching up to 31°C (88-89°F). However, the contrast in precipitation is striking: September enjoys a relatively dry climate with just 7 mm of rain over a single day, while May experiences significant rainfall, totaling 152 mm across 22 days, leading to notably higher humidity levels of 85%. For a more detailed look at the weather patterns in May, visit Trairi weather in May.

September and June share similar temperature ranges, both featuring minimums of 24°C (76°F), averages of 27°C (81°F), and maximums reaching 31°C (89°F). However, the weather conditions diverge significantly in terms of precipitation and humidity. June experiences a much wetter climate, with 69 mm (2.7 in) of rain across 15 days, while September sees only 7 mm (0.3 in) of rain on just 1 day. Additionally, humidity levels are higher in June at 81%, compared to 74% in September. For more detailed information, you can check the weather specifics here: Trairi weather in June.

September and July exhibit similar temperature ranges, with both months averaging around 27°C (81°F) and peaking at 31°C (89°F). However, September tends to be drier, receiving only 7 mm (0.3 in) of precipitation over just 1 day, compared to July, which experiences 44 mm (1.7 in) of rainfall spread across 10 days. Humidity levels are also quite comparable, with September at 74% and July slightly higher at 75%. For more detailed weather information, you can visit Trairi weather in July.

In September, the weather remains relatively stable compared to August, with minimum temperatures consistently starting at 24°C (76°F) and average temperatures maintaining around 27°C (81°F). However, September features a slightly lower maximum temperature of 31°C (89°F) compared to August's peak of 32°C (89°F). Additionally, September experiences less precipitation, only 7 mm (0.3 in) over 1 day, as opposed to August’s 10 mm (0.4 in) over 2 days. Humidity levels remain steady at 74% for both months, contributing to a warm and humid tropical feel. For more detailed insights into the weather during this time, check Trairi weather in August.

September and October present fairly similar weather patterns, yet there are subtle distinctions. In September, temperatures range from a minimum of 24°C (76°F) to a maximum of 31°C (89°F), with an average of 27°C (81°F) and relatively low precipitation at 7 mm (0.3 in) on just one day. Moving into October, the minimum temperature increases slightly to 25°C (77°F), while the maximum dips slightly to 31°C (88°F). The average remains consistent at 27°C (81°F), but the precipitation rises to 11 mm (0.4 in) over two days, accompanied by a slight uptick in humidity to 75%. For more specific insights on weather trends, check out Trairi weather in October.

In comparing the weather between September and November, we notice a slight increase in temperatures during November, with a minimum of 25°C (77°F) and an average of 28°C (82°F), compared to September’s minimum of 24°C (76°F) and average of 27°C (81°F). Both months experience a maximum of 31°C (89°F), indicating consistent warmth. However, November sees increased precipitation, totaling 19 mm (0.7 in) over 4 days, while September has only 7 mm (0.3 in) over a single day. Additionally, humidity levels are slightly higher in November at 77%, compared to 74% in September. For a more detailed view of November weather, check Trairi weather in November.

In comparing the weather between September and December, we notice some notable differences. September boasts a warm climate with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 31°C (89°F) and an average of 27°C (81°F). This month experiences minimal precipitation, with only 7 mm (0.3 in) over 1 day and a humidity level of 74%. In contrast, December sees slightly warmer temperatures, with a minimum of 25°C (76°F), an average of 28°C (82°F), and a maximum of 31°C (88°F). However, December is much wetter, recording 52 mm (2.1 in) of precipitation over 13 days and higher humidity at 81%. For more detailed information on December weather, check out Trairi weather in December.

Compare Trairi's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Trairi

September in Trairi is characterized by relatively mild temperatures, making it a pleasant month compared to the extreme heat of the summer. With an average temperature of 27°C, it serves as a transition into the cooler months ahead. Rainfall is minimal, with only a single rainy day this month, resulting in a dry, enjoyable climate. The humidity level remains high at 74%, but the overall weather is more tolerable, allowing for outdoor activities. For more detailed insights into the year-round weather patterns, visit Trairi Climate.