Last updated: August 21, 2025
September in Guarujá, Brazil welcomes the transition to spring with warm temperatures, boasting a maximum of 33°C (92°F) and an average of 21°C (70°F). The weather is characterized by a mix of sunny days and occasional rain, accumulating to 102 mm (4.0 in) of precipitation over 13 days, contributing to a humidity level of 78%. Ideal for outdoor activities, this vibrant coastal city balances warmth with refreshing breezes, making it the perfect destination for those seeking both adventure and relaxation.
As September rolls into Guarujá, Brazil, the temperate climate begins to shift, marking the transition from winter to spring. The month showcases a delightful range with minimum temperatures around 15°C (60°F), providing a crisp start to the day. As the sun rises higher, the average temperature climbs to a comfortable 21°C (70°F), ideal for outdoor activities along the stunning beaches. The warmth peaks in September, reaching maximums of 33°C (92°F), creating perfect conditions for sun-seekers and adventurers alike. This gradual warming trend not only signifies the approach of the warmer months but also invites visitors to savor the vibrant natural beauty and lively atmosphere of this coastal paradise.
In Guarujá, Brazil, September sees a notable dip in rainfall, with precipitation measuring 102 mm (4.0 in) over the course of 13 days. This marks a decline from the preceding months, as both July and August experienced heavier rainfall, with 229 mm and 133 mm, respectively. The trend reflects the region's transition from the wetter winter months to a more moderate spring. Furthermore, compared to the more intense precipitation recorded from January to March, September's weather signals a more stable climate, hinting at the gradual shift towards the drier season as the year progresses. As such, this month serves as a pivotal point, balancing between the lingering effects of winter and the arrival of the upcoming warmer months.
In September, Guaruja, Brazil, experiences a notable transition in humidity, with levels stabilizing at a comfortable 78%. This month marks the continuation of a gradual decline from the summer's peak, where humidity consistently hovered around the high 80s. As the year progresses into the drier months of October and November, September's humidity sets a perfect backdrop for enjoying the beach with slightly milder conditions. Following the summer's sweltering heat, this subtle drop makes September an ideal time for both locals and tourists to relish the beautiful coastal scenery without the overwhelming stickiness of earlier months.
In September, Guarujá, Brazil, experiences a return to extreme UV Index levels, measuring 11 with a burn time of just 10 minutes. This trend marks a notable climb from the previous months, underscoring the city's consistent exposure to intense sun, especially from January to April when UV levels peak at 15. After a slight dip during the winter months of June and July, where the UV Index hovers at 6, the fall season brings a resurgence of strong sun exposure. As October approaches, UV levels will climb even higher, making it crucial for sun safety awareness. For more insights, check out the detailed Guaruja UV Index.
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As summer begins to wane, September in Guarujá, Brazil, is marked by a pleasant 274 hours of sunshine, making it a perfect time for those looking to bask in warm rays before the rainy season. This month maintains a consistent brightness similar to the surrounding months of May (274 hours) and October (261 hours), indicating a stable turn towards autumn. Notably, while the sun shines brighter in the earlier months of the year, peaking in March with 298 hours, September's sunshine suggests a subtle transition, beckoning sun-seekers to enjoy the lingering glow as the year begins to shift. As the cloud cover thickens in the following months, taking advantage of September's sunshine becomes essential for beachgoers and outdoor enthusiasts aiming to soak up the last remnants of summer.
In Guarujá, Brazil, September brings a 37% chance of sunny weather, setting it apart from the sunnier months that precede and follow it. After the peak of 61% in July, sunshine starts to taper off in August and dips further in September. This trend indicates a transitional period as winter yields to spring, offering a mix of sun and clouds. Despite this moderate likelihood, September still holds more promise than the later months of October, which drops to a mere 21%, making it a favorable time for those seeking some warmth before the rainy season takes hold.
In Guarujá, Brazil, September marks a transitional period in daylight duration, featuring 11 hours of daylight that mirrors the preceding months of August and April. As the year progresses, daylight tends to gradually decrease from the long summer days of January, with a steady reduction to the shorter winter months of May through July. However, as spring approaches, daylight begins to increase again, with October set to restore 12 hours of daylight. This rhythmic pattern highlights how Guarujá experiences a balance between vibrant summer light and the cooler shadows of winter, inviting residents and visitors alike to enjoy the diverse beauty of each season.
As September rolls into Guarujá, the winds begin to pick up, boasting an average speed of 3.8 m/s (9 mph). This slight increase from August’s 3.9 m/s (9 mph) signals a transition into the more invigorating breezes of spring. Overall, the wind patterns reveal a gradual climb throughout the year, with the gentler breezes of summer giving way to increasingly spirited gusts as we approach October's peak of 4.7 m/s (11 mph). This trend not only enhances the coastal experience but also invites various outdoor activities, making September an ideal time to bask in the growing energy of the marine atmosphere.
Weather in Guaruja varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Guaruja, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present distinct weather patterns, reflecting the transition from late winter to the peak of summer in many regions. In September, temperatures range from a minimum of 15°C (60°F) to a maximum of 33°C (92°F), with an average of 21°C (70°F). The month sees about 102 mm (4.0 in) of precipitation over approximately 13 days, alongside a humidity level of 78%. In contrast, January experiences warmer temperatures with a minimum of 21°C (69°F) and a maximum of 32°C (90°F), averaging 26°C (79°F). However, it also brings higher precipitation, totaling 184 mm (7.2 in) over about 18 days, and increased humidity at 89%. For more detailed insights, you can explore Guaruja weather in January.
In comparing the weather of September and February, both months experience similar maximum temperatures, peaking at around 33°C (91°F). However, September has a cooler average temperature of 21°C (70°F) compared to February’s warmer average of 25°C (78°F). February also presents a higher humidity level at 87%, up from September’s 78%. Precipitation is significantly greater in February, with 249 mm (9.8 in) over 19 days, compared to September's 102 mm (4.0 in) over 13 days. This makes February a wetter and more humid month overall. For more detailed information, check out Guaruja weather in February.
September and March present quite different weather patterns. In September, temperatures range from a minimum of 15°C (60°F) to a maximum of 33°C (92°F), with an average of 21°C (70°F). This month experiences about 102 mm (4.0 in) of precipitation over 13 days, coupled with a humidity of 78%. In contrast, March typically sees warmer temperatures, with low averages of 21°C (69°F) and highs reaching up to 32°C (90°F), resulting in an average of 25°C (77°F). However, it is also significantly wetter, receiving around 229 mm (9.0 in) over 20 days and higher humidity at 86%. For more details about March weather, check out Guaruja weather in March.
In comparing the weather between September and April, both months present warm temperatures, but with slight variances. September typically experiences a minimum temperature of 15°C (60°F) and an average of 21°C (70°F), reaching a maximum of 33°C (92°F). In contrast, April has higher starting temperatures, with a minimum of 19°C (66°F) and an average of 23°C (74°F), peaking at 31°C (89°F). Regarding precipitation, April tends to be wetter with 139 mm (5.5 in) of rainfall over 15 days, while September sees 102 mm (4.0 in) over 13 days. Humidity levels are also slightly higher in April at 84% compared to September's 78%. For a more detailed view of April's weather conditions, check out Guaruja weather in April.
In comparing the weather of September and May, both months experience relatively mild minimum temperatures, around 15°C (60°F), but May tends to have a slightly warmer average temperature of 22°C (71°F) compared to September's 21°C (70°F). While September can reach a maximum of 33°C (92°F), May is generally cooler with a maximum of 29°C (84°F). Precipitation is more considerable in May, with a total of 130 mm (5.1 in) over 13 days, as opposed to September's 102 mm (4.0 in) over the same number of days. Additionally, humidity levels are slightly higher in May at 84%, compared to 78% in September. For more information on May’s weather, visit Guaruja weather in May.
In comparing the weather of September and June, both months exhibit similar temperature ranges, with minimums around 15°C (60°F) and averages hovering at 21°C (70°F). However, September tends to be slightly warmer, with a higher maximum temperature of 33°C (92°F) compared to June's peak of 30°C (86°F). Rainfall is slightly lower in September, with 102 mm (4.0 in) over 13 days, as opposed to June's 117 mm (4.6 in) across 12 days. Humidity levels are also high in both months, at 78% in September and 82% in June, creating a lush, tropical feel. For more specific insights into this month, you can check Guaruja weather in June.
When comparing the weather in September and July, September tends to be warmer overall, with average temperatures reaching 21°C (70°F) compared to July's 20°C (67°F). September also experiences higher maximum temperatures, peaking at 33°C (92°F) while July's maximum is 30°C (86°F). However, September has more precipitation, totaling 102 mm (4.0 in) over 13 days, compared to July's 81 mm (3.2 in) across 8 days. Both months have similar humidity levels, with September at 78% and July at 80%. For more detailed insights on July weather, you can check Guaruja weather in July.
In comparing the weather of September and August, we see that September tends to be slightly warmer, with average temperatures reaching 21°C (70°F) compared to August's average of 19°C (67°F). The maximum temperature in September also climbs to 33°C (92°F), surpassing August's peak of 30°C (87°F). Both months experience similar levels of humidity at 78%, yet September has somewhat less precipitation, totaling 102 mm (4.0 in) over 13 days, compared to 133 mm (5.3 in) in August, which also experiences rainfall across 13 days. For more detailed insights, you can explore Guaruja weather in August.
In September, the weather is characterized by a warm average temperature of 21°C (70°F), with maximum highs reaching up to 33°C (92°F) and a minimum of 15°C (60°F). The month experiences considerable rainfall, totaling 102 mm (4.0 in) spread over 13 days, accompanied by a high humidity level of 78%. Conversely, October sees a slight increase in temperature, with an average of 22°C (72°F) and maximum highs of 34°C (93°F), while also rising to a minimum of 17°C (62°F). However, October brings even more rain, accumulating 183 mm (7.2 in) over 19 days, although the humidity slightly decreases to 76%. For a detailed overview, check Guaruja weather in October.
In September, the weather is typically warm with minimum temperatures around 15°C (60°F) and reaching up to 33°C (92°F) on hotter days. The month averages 21°C (70°F) and experiences around 102 mm (4.0 in) of precipitation spread over 13 days, with a humidity level of 78%. In contrast, November sees slightly warmer conditions, with minimum temperatures of 17°C (63°F) and maximums of 31°C (87°F), averaging at 22°C (72°F). However, November is also wetter, accumulating 147 mm (5.8 in) of rain over 18 days and exhibiting an increase in humidity to 85%. For a more detailed look at November weather, check out Guaruja weather in November.
In September, the weather features a minimum temperature of 15°C (60°F) and an average of 21°C (70°F), peaking at 33°C (92°F), with an overall precipitation of 102 mm (4.0 in) over 13 days. The humidity during this month is relatively high at 78%. In contrast, December experiences slightly warmer conditions, with minimum temperatures starting at 19°C (66°F) and averaging 24°C (75°F), while seeing a maximum of 30°C (87°F). The rainfall increases significantly to 153 mm (6.0 in) spread over 19 days, accompanied by higher humidity levels at 87%. For more detailed insights on December weather, visit Guaruja weather in December.
As September ushers in the spring season in Guarujá, the weather begins to shift, offering warmer temperatures and a refreshing escape from the cooler winter months. With an average of 21°C (70°F), and occasional highs reaching 33°C (92°F), this month marks the transition to a more vibrant and comfortable climate. However, travelers should be prepared for increased afternoon showers, as September sees about 13 days of rainfall, totaling 102 mm. The humidity remains relatively high at 78%, giving the air a tropical feel that complements the stunning beaches. For a deeper dive into the seasonal changes throughout the year, explore the full details at Guaruja Climate.