Last updated: August 21, 2025
September in Fernando de Noronha, Brazil, offers a delightful tropical climate characterized by an average temperature of 26°C (79°F), with daily highs reaching up to 27°C (81°F) and lows not dropping below 24°C (76°F). While the month sees around 34 mm (1.3 in) of rain spread across 14 days, the high humidity level of 86% creates a lush atmosphere for both relaxation and exploration. Visitors can enjoy the island's stunning landscapes, but should be prepared for occasional showers that enhance the vibrant greenery of this pristine locale.
In September, temperatures in Fernando de Noronha remain pleasantly warm, reflecting a consistent trend throughout the late winter and early spring months. The minimum temperature hovers around 24°C (76°F), while the average lingers at 26°C (79°F). With a modest maximum reaching 27°C (81°F), visitors can expect a comfortable climate perfect for enjoying the island's stunning natural beauty. This mild weather is typical for the region, with temperatures showing only slight variations from the previous months, making it an ideal time for sun-seekers and nature enthusiasts alike.
September in Fernando de Noronha marks a significant shift in precipitation patterns, with rainfall plummeting to 34 mm (1.3 in) over just 14 days. This marks the tail end of the wet season that typically swells with heavy downpours, peaking in April at 265 mm (10.4 in). As the year progresses from the lush rainy months of early spring to the drier autumn days, precipitation steadily declines, making September one of the driest months on record. This reduction not only influences the island's vibrant ecosystems but also invites visitors to explore its stunning landscapes under clearer skies. With October continuing this trend at 27 mm (1.1 in), the transition to a drier climate becomes increasingly apparent, offering a unique charm to this tropical paradise.
In September, Fernando de Noronha experiences a relatively high humidity level of 86%, consistent with the trend observed in the previous months from May to August, all registering the same humidity. This pattern suggests a lingering tropical climate, where moisture remains prevalent as the region transitions from the cooler mid-year months into the warmer season. The consistency in humidity during this time creates an environment that is not only lush and vibrant but also provides a unique experience for visitors seeking to explore the island’s natural beauty. As the year progresses, humidity begins to gradually decline, offering a glimpse of the slight seasonal variations that characterize this stunning Brazilian destination.
September in Fernando de Noronha sees a UV Index of 13, categorized as extreme, indicating a consistent pattern of high sun exposure throughout the year. This figure aligns with the intense UV levels observed in preceding months, with values ranging from 11 to 15 from January to August. Notably, the burn time remains a brisk 10 minutes across all months, underscoring the importance of taking precautions against harmful UV radiation. As visitors revel in the stunning beauty of this tropical paradise, it is crucial to stay vigilant about sun safety. For more detailed information, you can check the Fernando de Noronha (Distrito Estadual) UV Index.
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September in Fernando de Noronha, Brazil, glows with an impressive 336 hours of sunshine, capping off a delightful stretch of radiant summer months. Following the sun-soaked days of August, which boasted the highest sunshine tally at 345 hours, September's bright days continue to entice visitors. The trend is unmistakable: as the year progresses, sunshine hours soar, peaking in October at 350 hours. This ascent showcases a vibrant pattern of increasing sunlight that characterizes the transition from the winter months. In contrast, the earlier part of the year, from January to April, reveals a gentler glow, hinting at the island's gradual shift towards its sun-drenched peak. With picturesque beaches and warm weather, September is an enticing prelude to the highly luminous October, making it a splendid time to experience the natural beauty of this tropical paradise.
In September, visitors to Fernando de Noronha can expect an inviting 66% chance of sunny weather, marking it as one of the more favorable months for sunshine. This increase in sunshine likelihood follows a steady climb through the late winter months, where July and August both boast 62% chances. As we transition into spring, the trend continues upward, making September a prime time to enjoy the island's breathtaking landscapes and vibrant marine life. Notably, this month offers a higher chance of clear skies compared to the preceding months, paving the way for delightful outdoor activities and scenic views that are sure to enhance any visit.
In Fernando de Noronha, Brazil, the daylight duration showcases a captivating rhythm throughout the year. From January to April, the days consistently boast a generous 12 hours of sunlight, ideal for basking in the island's natural beauty. However, as May rolls in, daylight dips slightly to 11 hours, continuing this trend through August. This period of shorter days allows for cozy evenings and a unique atmosphere. Come September, daylight rebounds to a more vibrant 12 hours, reaffirming the island's equatorial charm as it transitions into the welcoming warmth of spring. This fluctuation in sunlight not only marks the changing seasons but also enhances the allure of experiencing paradise at different times of the year.
In September, Fernando de Noronha experiences a refreshing average wind speed of 7.4 m/s (17 mph), marking it as a lively month for those seeking breezy escapes. This gentle gustiness follows an upward trend from the cooler months of June to August, where winds peaked at 8.3 m/s (19 mph). As the seasons shift, September's winds begin to mellow slightly compared to August but remain robust enough to enhance outdoor adventures and water sports. The overall pattern showcases a consistent increase in wind strength throughout the winter, peaking in late summer, making this tropical paradise a haven for wind lovers while still offering a comfortable climate for leisurely exploration.
Weather in Fernando de Noronha (Distrito Estadual) varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Fernando de Noronha (Distrito Estadual), focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between September and January, we see some interesting similarities and differences. Both months feature a minimum temperature of around 24°C (76°F) and average temperatures that hover between 26°C and 28°C. However, January experiences slightly higher maximum temperatures, reaching 28°C (83°F) compared to September's peak of 27°C (81°F).
When it comes to precipitation, January is notably wetter, receiving 129 mm (5.1 in) of rain over 17 days, while September has only 34 mm (1.3 in) across 14 days. Despite the increased rainfall in January, humidity remains relatively high but is marginally lower than in September at 82%, compared to September's 86%. For those interested in a detailed overview of January weather, you can check out Fernando de Noronha (Distrito Estadual) weather in January.
When comparing the weather in September and February, both months showcase warm temperatures with mild variations. September experiences a minimum temperature of 24°C (76°F) and an average of 26°C (79°F), while February is slightly warmer, with an average of 27°C (80°F) and a maximum of 29°C (84°F).
However, February faces significantly higher precipitation levels, with 160 mm (6.3 in) over 22 days compared to September's 34 mm (1.3 in) across 14 days. Both months have high humidity, but September is slightly more humid at 86% compared to February's 82%. For a more detailed look at February's weather, you can check out Fernando de Noronha (Distrito Estadual) weather in February.
In September, the weather in Fernando de Noronha is warm, with average temperatures ranging from a minimum of 24°C (76°F) to a maximum of 27°C (81°F). The month experiences relatively low precipitation, with only 34 mm (1.3 in) spread over about 14 days, and humidity is quite high at 86%. In contrast, March sees slightly higher temperatures, with averages ranging from 25°C (77°F) to 29°C (84°F). However, it is also much wetter, receiving 193 mm (7.6 in) of rain over 23 days, and humidity is slightly lower at 81%. For more detailed weather information, you can check Fernando de Noronha (Distrito Estadual) weather in March.
When comparing the weather in September and April, both months exhibit warm temperatures, with September's average reaching 26°C (79°F) compared to April's slightly warmer 27°C (81°F). However, April tends to be much wetter, experiencing a significant 265 mm (10.4 in) of precipitation over 25 days, while September only has 34 mm (1.3 in) across 14 rainy days. Humidity levels are somewhat similar, with September at 86% and April slightly lower at 80%. These differences highlight the transition from the drier conditions of September to the much more humid and rainy environment of April. For more details, you can check Fernando de Noronha (Distrito Estadual) weather in April.
In comparing the weather of September and May, we see some notable differences. September features a mild temperature range with a minimum of 24°C (76°F) and an average of 26°C (79°F), while May is slightly warmer, with temperatures starting at a minimum of 25°C (78°F) and averaging 27°C (81°F). Additionally, May experiences significantly more rainfall, totaling 225 mm (8.9 in) over 25 days, compared to September's 34 mm (1.3 in) spread over 14 days. Despite both months having similar humidity levels at 86%, the increased precipitation in May leads to a much wetter environment. For a detailed look at May's weather, you can visit Fernando de Noronha (Distrito Estadual) weather in May.
In comparing the weather of September and June, both months feature similar temperatures, with minimums around 24°C (76°F) and averages hovering near 26°C (79°F). However, June tends to be slightly warmer at its maximum, averaging 28°C (83°F) compared to September's maximum of 27°C (81°F). A significant difference lies in the precipitation levels; June experiences much heavier rainfall, with 127 mm (5.0 in) over 21 days, while September sees only 34 mm (1.3 in) across 14 days. Humidity remains consistent at 86% in both months, creating a similarly humid environment year-round. For further details on June weather, you can check Fernando de Noronha (Distrito Estadual) weather in June.
In comparing the weather between July and September, we observe that both months have similar temperature ranges, with minimums around 24°C (75-76°F), average temperatures of 26°C (79°F), and maximums peaking at 27°C (81-82°F). However, July is significantly wetter, receiving 160 mm (6.3 in) of precipitation over 19 days, compared to September's 34 mm (1.3 in) over just 14 days. Both months experience high humidity levels at 86%, contributing to a warm and muggy atmosphere. For further details on July weather, you can visit Fernando de Noronha (Distrito Estadual) weather in July.
In comparing the weather between August and September, both months exhibit similar temperature ranges, with minimums of 24°C (75°F) and 24°C (76°F) respectively and average temperatures hovering around 26°C (78°F to 79°F). However, September experiences slightly less precipitation at 34 mm (1.3 in) compared to August's 57 mm (2.3 in), though both months see high humidity levels at 86%. Additionally, rainfall occurs on fewer days in September, 14 days versus 19 days in August, suggesting a drier trend as the seasons transition. For more details on August weather patterns, you can visit Fernando de Noronha (Distrito Estadual) weather in August.
In September, the weather remains warm with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 27°C (81°F), accompanied by an average temperature of 26°C (79°F). This month sees 34 mm (1.3 in) of precipitation over 14 days, with humidity levels at 86%. In contrast, October maintains a similar temperature profile, with minimums and maximums also spanning from 24°C (76°F) to 27°C (81°F) and an average of 26°C (79°F). However, the precipitation decreases slightly to 27 mm (1.1 in) over 11 days, and humidity is marginally lower at 85%. For more detailed weather insights, check out Fernando de Noronha (Distrito Estadual) weather in October.
In comparing the weather between September and November, we notice that November tends to be slightly warmer, with average temperatures peaking at 27°C (80°F), compared to September's 26°C (79°F). Both months experience high humidity, although September is marginally more humid at 86% versus November's 84%. Precipitation levels are quite similar, with September receiving 34 mm (1.3 in) over about 14 days and November seeing 31 mm (1.2 in) across approximately 13 days. Overall, both months showcase warm tropical weather, but November offers a slight increase in warmth and a decrease in humidity. For more details on November weather, visit Fernando de Noronha (Distrito Estadual) weather in November.
In September, the weather in Fernando de Noronha is characterized by slightly cooler temperatures, with a minimum of 24°C (76°F) and an average of 26°C (79°F). Additionally, this month experiences a total precipitation of 34 mm (1.3 in) over about 14 days, accompanied by high humidity levels averaging 86%. In contrast, December sees a slight increase in temperatures, with a minimum of 25°C (77°F) and an average of 27°C (80°F), peaking at 28°C (82°F). However, December also brings more rainfall, totaling 68 mm (2.7 in) across 17 days and slightly lower humidity at 83%. For more details, you can check the Fernando de Noronha (Distrito Estadual) weather in December.
In September, Fernando de Noronha experiences a unique blend of warm temperatures and increased humidity, distinguishing it from the drier months of the year. While the average temperature remains comfortably mild, the heightened humidity can make the atmosphere feel more intense, particularly on the rainier days. With approximately half the month seeing some precipitation, visitors can expect a refreshing yet humid environment that contrasts with the sun-drenched days typical of the peak dry season. For those seeking to learn more about the island's weather patterns, visit Fernando de Noronha (Distrito Estadual) Climate.