September Weather in Tumbes, Peru

Last updated: August 27, 2025

In September, Tumbes, Peru, experiences a delightful blend of warmth and humidity, with maximum temperatures reaching 29°C (84°F) and an average of 23°C (74°F). As the month progresses, the climate remains generally pleasant, characterized by a minimum temperature of 19°C (66°F), making it an ideal time for outdoor activities. With only 4 mm (0.1 in) of rain over just a single day, the likelihood of wet weather is minimal, allowing residents and visitors to enjoy the stunning surroundings. The humidity stands at 86%, adding a tropical essence to this vibrant coastal region, perfect for those seeking a comforting escape.

September Temperature in Tumbes

In September, Tumbes, Peru, experiences a delightful transition as temperatures begin to stabilize from the cooler months. With a minimum of 19°C (66°F) and an average of 23°C (74°F), the climate remains comfortable throughout the month. The maximum temperature peaks at 29°C (84°F), reflecting a slight uptick from the chill of winter while still maintaining a pleasant atmosphere. This month marks a subtle shift towards warmer conditions, indicative of the approaching summer, as the ocean breezes and sunny days beckon visitors to enjoy the vibrant coastal landscape.

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

The chart illustrates September temperature patterns in Tumbes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tumbes, 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).
JanFebMarAprMayJunJulAugSepOctNovDec798080807877757374747577
Data source: Temperature data for Tumbes 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 Tumbes

In September, Tumbes, Peru experiences a notable decline in precipitation, recording a mere 4 mm (0.1 in) from just 1 day of rain. This month marks one of the driest periods of the year, following a substantial spike in rainfall during previous months, most notably March with 239 mm (9.4 in). As the region transitions to the dry season, the stark decrease in both precipitation amount and rainy days highlights a clear trend towards increased dryness, paving the way for the return of more frequent showers beginning in October. The largely arid September serves as a prelude to the gradual onset of the wetter months ahead, illustrating the climatic rhythm characteristic of Tumbes.

September Precipitation Trends in Tumbes

The chart displays monthly precipitation patterns in Tumbes, 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 Tumbes, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec651622398543131034161034
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tumbes

September in Tumbes, Peru, sees an average humidity of 86%, maintaining a trend of high moisture levels that characterize the region throughout the year. As the dry season gradually gives way to the wetter months, September’s humidity remains consistent with the preceding months of July and August, both at 84%. This slight uptick reflects a typical shift towards increased humidity as the year progresses, with October closely following at 86%. Overall, the pattern indicates a steady humidity level that hovers around the mid-80s to upper 80s, creating a lush and vibrant environment in this coastal area. Travelers and residents alike can expect a humid atmosphere, particularly as the year draws towards its wetter season.

September Average Humidity in Tumbes

This chart illustrates the average monthly humidity levels in Tumbes, 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 Tumbes is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%86%84%87%87%84%84%86%86%87%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Tumbes

In September, Tumbes, Peru, experiences a UV Index of 14, which falls into the extreme exposure category, necessitating just 10 minutes of sun exposure before burning occurs. This trend of high UV levels is consistent throughout the year, particularly in the first half, where the UV Index often peaks at 14 or 15 from January to April. A slight dip is observed moving into late autumn, with October and November seeing values of 13. Despite these fluctuations, the overall message remains clear: sun safety is paramount in Tumbes, especially during September’s intense sunlight. For more detailed insights about UV levels in the region, check out Tumbes UV Index.

Maximum UV Index Levels in Tumbes for September

The chart shows the monthly maximum UV Index (UVI) for Tumbes 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 Tumbes typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141415151311111214131312
Data source: Tumbes 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 Tumbes

September in Tumbes, Peru, offers a delightful blend of warm days and abundant sunshine, with 326 hours of sunlight that illuminate the coastal landscape. As the year progresses, there's a noticeable trend of increasing sunshine hours peaking in August with 337 hours, followed closely by September, suggesting a lingering summer warmth that seamlessly transitions into the early fall. This month stands out as the tail end of the sun-drenched days, reminiscent of the bustling peak summer months. Following September, the hours slightly decline into October at 324 hours, yet the sun's embrace remains a prominent feature of Tumbes' vibrant atmosphere. Each month paints a picture of a region that thrives under the nurturing glow of the sun, making September an ideal time to bask in its radiant warmth.

Monthly Sunshine Duration in Tumbes: September Highlighted

The September sunshine duration represents the total number of hours Tumbes 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.
JanFebMarAprMayJunJulAugSepOctNovDec251h266h283h302h315h314h336h337h326h324h319h320h
Data source: Tumbes September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Tumbes During September

September in Tumbes, Peru, offers a promising chance of sunny weather, with a 42% likelihood of clear skies. This marks an upward shift from the previous months, particularly when compared to the relatively overcast conditions of August, which saw only a 39% chance of sunshine. As the year progresses into spring, the sun begins to shine more brightly, reflecting the positive trend of increasing daylight and warmth. Although September's sun is not guaranteed, it provides a welcome break from the cloudier months, hinting at the transition into brighter days ahead.

Percentage of Sunny Days in September in Tumbes

The chart illustrates the percentage of sunny days in Tumbes 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 Tumbes experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec19%16%16%19%44%40%57%39%42%26%29%22%
Data source: Tumbes September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Tumbes in September

In Tumbes, Peru, the rhythm of daylight duration remains remarkably consistent throughout the year. From January to April, residents enjoy a generous 12 hours of daylight, reflecting the region's equatorial climate. As the year progresses into May through August, daylight dips slightly to 11 hours, signaling the onset of a subtle seasonal shift. However, come September, the daylight duration returns to a balmy 12 hours, setting the stage for the months ahead, which mirror the brightness of earlier in the year. This predictable pattern not only enhances the scenic beauty of Tumbes but also provides a warm embrace for both locals and visitors alike, making every day feel vibrant and full of life.

Average Daylight Hours in Tumbes for September

The chart illustrates the variation in daylight duration in Tumbes throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 17m12h 12m12h 6m12h11h 56m11h 54m11h 55m11h 59m12h 4m12h 10m12h 15m12h 18m
Data source: Tumbes daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Tumbes

As September rolls into Tumbes, Peru, the winds begin to pick up, bringing a refreshing energy that sets the stage for the transitional months ahead. With an average wind speed of 2.8 m/s (6 mph), September marks a noticeable increase from the more gentle breezes of earlier months. This rise in wind intensity reflects a gradual trend leading into the year’s end, where November reaches its peak at 3.0 m/s (7 mph). The consistent wind patterns observed from January through August showcase the region's mild and stable airflow, but September's breezier conditions signal a vibrant shift. As the winds dance through the coastal landscapes, they invite both locals and visitors to embrace the invigorating spirit of spring in this enchanting part of Peru.

Average September Wind Speed in Tumbes

The chart displays monthly wind speed patterns in Tumbes, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.31.92.02.42.32.62.52.8 m/s2.73.02.8
Data source: Tumbes September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Tumbes Compares to Other Months

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

September and January in Tumbes present quite different weather patterns. In September, temperatures range from a minimum of 19°C (66°F) to a maximum of 29°C (84°F), with an average of 23°C (74°F). The month experiences low precipitation, only about 4 mm (0.1 in) over a single day, along with high humidity at 86%. In contrast, January sees warmer temperatures, with a minimum of 21°C (70°F) and a maximum of 34°C (93°F), averaging 26°C (80°F). This month is also significantly wetter, receiving 65 mm (2.6 in) of rain across 12 days, coupled with humidity levels rising to 88%. For more details, you can check Tumbes weather in January.

September and February exhibit notably different weather patterns. In September, temperatures range from a mild minimum of 19°C (66°F) to a comfortable maximum of 29°C (84°F), with an average of 23°C (74°F) and very little precipitation, totaling just 4 mm (0.1 in) over a single day. In contrast, February experiences warmer temperatures, with a minimum of 23°C (74°F), an average of 27°C (81°F), and a maximum soaring to 33°C (92°F). However, February is characterized by significantly higher precipitation, with 162 mm (6.4 in) spread over 19 days. Despite a slightly higher humidity level in February at 87%, the abundance of rainfall sets it apart from the drier September. For more information, you can check Tumbes weather in February.

In September, the weather is characterized by mild temperatures, with averages around 23°C (74°F), and a maximum of 29°C (84°F), accompanied by very little precipitation, just 4 mm (0.1 in) over a single day. In contrast, March brings warmer conditions, with average temperatures rising to 27°C (81°F) and highs reaching up to 32°C (90°F). However, this month also sees a significant increase in rainfall, totaling 239 mm (9.4 in) spread over 20 days, maintaining the same humidity level of 86%. For more detailed information, you can visit Tumbes weather in March.

In September, the weather features milder temperatures, with a minimum of 19°C (66°F) and a maximum of 29°C (84°F), and relatively low precipitation of just 4 mm (0.1 in) over 1 day. This allows for a more comfortable and drier environment, with humidity levels at 86%. In contrast, April is noticeably warmer, boasting a minimum temperature of 22°C (73°F) and a maximum of 33°C (91°F). However, it also experiences significantly more rainfall, with 85 mm (3.3 in) over 11 days, leading to a more humid atmosphere at 84%. For a detailed look at weather patterns during April, you can visit Tumbes weather in April.

September weather is characterized by milder temperatures, with minimums around 19°C (66°F) and a maximum of 29°C (84°F), contrasted by May's warmer conditions, where temperatures range from a minimum of 21°C (71°F) to a maximum of 32°C (90°F). While September experiences minimal precipitation with only 4 mm (0.1 in) over just 1 day, May is much wetter, receiving 43 mm (1.7 in) across 7 days. Humidity levels are quite similar in both months, hovering around 86% in September and 87% in May, indicating a consistently humid atmosphere. For more detailed insights on the weather in May, check Tumbes weather in May.

September and June exhibit similar warm temperatures, but there are notable differences in conditions. September sees a minimum of 19°C (66°F) and an average of 23°C (74°F), with a maximum reaching 29°C (84°F). In contrast, June offers slightly warmer temperatures, with a minimum of 20°C (69°F), an average of 25°C (77°F), and a peak of 32°C (89°F). Although June experiences higher precipitation at 12 mm (0.5 in) over 2 days compared to September's 4 mm (0.1 in) over just 1 day, the humidity levels in both months remain quite similar, with September at 86% and June at 87%. For more details, check Tumbes weather in June.

In comparing the weather of September to July, we see some notable differences. September tends to be slightly cooler, with an average temperature of 23°C (74°F) compared to July's 24°C (75°F). Both months share a similar range, peaking at 29°C (84°F) during the day. However, July experiences more rainfall, with 10 mm (0.4 in) of precipitation on about two days, whereas September is much drier, recording only 4 mm (0.1 in) over one day. Humidity levels are comparable, with September’s humidity at 86% and July’s at 84%. For more detailed information, check out Tumbes weather in July.

In September, the temperatures in Tumbes remain quite similar to August, with an average of 23°C (74°F) and a maximum reaching 29°C (84°F) in both months. However, September sees a slight increase in minimum temperature, rising to 19°C (66°F) compared to August's 18°C (65°F). While both months exhibit low precipitation levels, September experiences a slight uptick, recording 4 mm over 1 day, whereas August had no recorded precipitation and only 3 mm. Humidity also rises marginally in September to 86%, up from August's 84%. For a more detailed view of August's weather, check out Tumbes weather in August.

In September, the weather features warm temperatures with a minimum of 19°C (66°F) and an average of 23°C (74°F), reaching a maximum of 29°C (84°F). The month is relatively dry, with only 4 mm (0.1 in) of precipitation over just 1 day, while humidity levels remain high at 86%. In contrast, October sees a slight increase in temperatures, with an average of 24°C (75°F) and a peak of 30°C (86°F), but it also brings more rain, totaling 16 mm (0.6 in) over 3 days. Humidity remains consistent at 86%. For more details, you can check Tumbes weather in October.

In September, the weather boasts warm temperatures with a minimum of 19°C (66°F), an average of 23°C (74°F), and a maximum of 29°C (84°F). With only 4 mm of precipitation over just 1 day, humidity levels are high at 86%, making it feel quite humid and warm. In contrast, November experiences slightly warmer temperatures, with a minimum of 18°C (65°F), an average of 24°C (75°F), and a peak of 32°C (89°F). However, November sees increased rainfall, totaling 10 mm over 2 days, and a similar humidity level of 87%. For a more detailed look at November weather, check out Tumbes weather in November.

In September, temperatures in Tumbes range from a minimum of 19°C (66°F) to a maximum of 29°C (84°F), with an average of 23°C (74°F). The month typically sees low precipitation, with only about 4 mm (0.1 in) across just 1 day, and humidity levels are relatively high at 86%. In contrast, December presents slightly warmer conditions, featuring a minimum temperature of 20°C (68°F) and climbing to a maximum of 32°C (90°F), with an average of 25°C (78°F). However, this month experiences significantly more rainfall, totaling 34 mm (1.4 in) over 8 days, alongside a slight increase in humidity to 88%. For a more detailed understanding of December weather, you can check out Tumbes weather in December.

Compare Tumbes's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Tumbes

In September, Tumbes enjoys a mild climate that sets it apart from the hotter months that precede it. With pleasant temperatures averaging 23°C (74°F), this month brings a refreshing breeze, making outdoor activities more enjoyable. The humidity remains relatively high at 86%, but the minimal precipitation—with only a single day of rain—ensures that it doesn't dampen your plans. As the weather begins to transition towards the warmer October, September serves as a delightful bridge that balances warmth with the cooling embrace of the ocean breeze. For those interested in exploring the area's climate patterns, further details can be found at Tumbes Climate.