Last updated: August 21, 2025
In October, Cayenne, French Guiana experiences a warm tropical climate, with maximum temperatures reaching up to 32°C (90°F) and an average of 28°C (82°F). Nights are pleasantly cooler, dipping to a minimum of 25°C (77°F). This month also sees a notable humidity level of 80%, contributing to the lush, verdant landscapes. Rainfall is a common occurrence, with an average precipitation of 59 mm (2.3 in) spread over 16 days, making it crucial for visitors to prepare for occasional showers amidst the warmth. This combination of heat and humidity creates a vibrant, tropical atmosphere, ideal for immersing oneself in the region's rich natural beauty.
In October, Cayenne, French Guiana continues to embrace the warmth typical of its tropical climate. With minimum temperatures rising slightly to 25°C (77°F), the month feels a bit more balmy than the preceding months. The average temperature reaches a comfortable 28°C (82°F), making leisurely outdoor activities inviting. As the maximum temperature can soar to a sweltering 32°C (90°F), the heat is certainly palpable, aligning with the trend of increasing warmth seen since August. Overall, October in Cayenne showcases a blend of tropical comfort and warmth, setting the stage for vibrant plant life and lively outdoor events.
In October, Cayenne experiences a slight uptick in precipitation, accumulating about 59 mm (2.3 in) of rain over 16 days. This marks a continuation of the transition from the drier months of August and September, where rainfall dropped to 92 mm and 56 mm respectively. Although October's rainfall is still relatively low compared to the heavy downpours of April and May, it serves as a gentle reminder of the coming wet season, with November expected to bring more substantial moisture at 204 mm. The pattern reflects a gradual increase in precipitation as the year unfolds, highlighting Cayenne's tropical climate, where rainfall plays a pivotal role in the ecosystem's rhythm.
In October, humidity in Cayenne, French Guiana, hovers around a comfortable 80%, reflecting a slight increase from the 79% recorded in September. This month sits at the tail end of the drier months, where humidity has shown a gradual rise from the beginning of the year, with levels around 76-78% during the early months. The shift becomes more pronounced as the rainy season approaches, particularly in November when humidity spikes to 85%. This upward trend is indicative of the region's tropical climate, highlighting October as a transitional month where the air becomes increasingly lush and inviting, setting the stage for the wetter months to come.
In October, Cayenne experiences a high UV Index of 13, maintaining its status within the extreme exposure category—a trend consistent throughout the year. This level of UV radiation means that without adequate protection, skin can burn in just 10 minutes. The UV Index remains impressively stable from the previous months, with figures hovering around 12 to 16 from January to September. As we transition into the end of the year, these levels underscore the importance of sun safety throughout the region. To learn more about the UV Index and how to protect yourself, visit Cayenne UV Index.
UV Risk Categories
October in Cayenne, French Guiana, is a delightful month that basks in an impressive 342 hours of sunshine. Following the peak of the sun-soaked summer months, October continues the trend established by August and September, showcasing a remarkable consistency in bright, sunny days. As the year transitions into the latter months, the sun still generously bathes the region, making it an optimal time for outdoor adventures. With such abundant sunlight, October reflects the lingering warmth of the tropics, ensuring that residents and visitors alike can enjoy the vibrant beauty of this fascinating locale.
In Cayenne, French Guiana, October offers a 32% chance of sunny weather, providing a pleasant transition from the wetter months of the year. This month stands out as an improvement from the rainy season peak, where the chances begin to rise notably in September with a 45% likelihood of sun. As summer transitions into fall, October's sun availability is more favorable compared to the earlier months of the year, like April (11%) and May (9%), which see significantly less sunshine. While it may not rival the sunny peaks of August and September, October remains a promising time for those hoping to enjoy Cayenne's vibrant outdoor scene.
In Cayenne, French Guiana, the daylight duration experiences intriguing rhythms throughout the year. From January to February, residents enjoy a consistent 11 hours of daylight, setting a gentle tone for the year. As spring approaches in March, the days begin to stretch, peaking at 12 hours of sunlight from March through September. This period is marked by longer days, allowing for vibrant outdoor activities. However, as October rolls around, daylight diminishes slightly again to 11 hours, echoing the early months of the year. This cyclical pattern, characterized by 11-hour and 12-hour shifts, highlights the region's stable equatorial climate, offering a predictable yet beautiful dance of light and dark throughout the seasons.
As October unfolds in Cayenne, French Guiana, the winds begin to pick up slightly, boasting an average speed of 3.8 m/s (8 mph). This marks a subtle increase from the languid breezes of the preceding months, which hover around 3.1 to 3.4 m/s. The transition into October signals a gentle shift in the weather patterns, where the wind starts to stir again after the calmer summer months. While it isn’t the height of wind activity, it stands as a prelude to November's breezy charm, suggesting that as the year wanes, the atmosphere becomes a tad more vibrant and lively. This week-by-week evolution demonstrates Cayenne's unique climatic nuances, where even small changes in wind speed can transform the ambiance of the region.
Weather in Cayenne varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Cayenne, focusing on differences in temperature, rainfall, humidity, and UV levels.
October and January in Cayenne present notable differences in weather patterns. In October, temperatures range from a minimum of 25°C (77°F) to a maximum of 32°C (90°F), with an average temperature of 28°C (82°F) and relatively low precipitation of 59 mm (2.3 in) spread over 16 days. This month experiences high humidity at 80%.
In contrast, January offers slightly cooler temperatures, with a minimum of 23°C (74°F), an average of 26°C (79°F), and a maximum of 29°C (84°F). However, it is much wetter, with total precipitation reaching 225 mm (8.9 in) over 23 days, while humidity remains comparable at 78%. For more details on January weather, you can visit Cayenne weather in January.
In comparing the weather between October and February, we see that October typically enjoys slightly warmer temperatures, with averages around 28°C (82°F) and maximums reaching 32°C (90°F). In contrast, February is cooler, averaging 26°C (79°F) with maximums of 28°C (83°F). However, February experiences significantly more rainfall, with 189 mm (7.5 in) of precipitation over 24 days, compared to October's 59 mm (2.3 in) across 16 days. Despite the higher rainfall in February, the humidity is slightly lower at 76%, compared to October’s 80%. For more details on February weather, check out Cayenne weather in February.
In comparing the weather between October and March, October tends to be slightly warmer, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 32°C (90°F), while March has a lower maximum temperature of 30°C (86°F) and an average of 26°C (80°F). However, March experiences significantly more rainfall, with 196 mm (7.7 in) over 25 days compared to October's 59 mm (2.3 in) over 16 days. Humidity levels are relatively close, with October at 80% and March at 76%. For a detailed look at the weather specific to that month, you can visit Cayenne weather in March.
When comparing the weather in October and April, it’s clear that both months experience warm temperatures, but they differ significantly in precipitation and wet days. October features a slight temperature increase with a minimum of 25°C (77°F) and an average of 28°C (82°F), while April's temperatures are marginally lower, ranging from a minimum of 24°C (75°F) to an average of 26°C (80°F). However, April sees a dramatic uptick in rainfall, receiving 390 mm (15.4 in) of precipitation over 27 days, compared to October's 59 mm (2.3 in) over 16 days, and the humidity levels are slightly lower in April at 77%. For more detailed insights, check out Cayenne weather in April.
October and May present distinct weather patterns in terms of temperature and precipitation. In October, temperatures range from a minimum of 25°C (77°F) to a maximum of 32°C (90°F), with an average of 28°C (82°F). The month experiences relatively lower rainfall, accumulating about 59 mm (2.3 in) over 16 days, and an average humidity of 80%.
In contrast, May boasts slightly cooler temperatures, with a minimum of 24°C (76°F) and a maximum of 30°C (86°F), yielding an average temperature of 26°C (80°F). However, it has significantly higher precipitation, totaling approximately 576 mm (22.7 in) over 30 days, paired with a humidity level of 78%. The stark difference in rainfall highlights May's wetter climate compared to the drier conditions of October. For more detailed information, see Cayenne weather in May.
In comparing the weather between October and June, October tends to be slightly warmer, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 32°C (90°F). In contrast, June has cooler averages, with temperatures ranging from 23°C (75°F) to 30°C (86°F). While October experiences relatively lower precipitation at 59 mm (2.3 in) over 16 days, June is significantly wetter, receiving 433 mm (17.1 in) over 29 days, resulting in higher humidity levels of 87%. For more detailed information, you can check out Cayenne weather in June.
In October, the weather is generally warmer and drier compared to July. With average temperatures reaching 28°C (82°F) and maximums of 32°C (90°F), October offers a pleasant heat, while July has slightly cooler average temperatures of 26°C (80°F) with highs around 30°C (87°F). However, October experiences significantly less precipitation, with only 59 mm (2.3 in) over 16 days, compared to July’s heavy rainfall of 269 mm (10.6 in) spread across 29 days. The humidity remains similar in both months, averaging around 80-81%. For more details on July weather, visit Cayenne weather in July.
In comparing the weather of October and August, we see a slight increase in average temperatures for October, with a minimum of 25°C (77°F) and an average of 28°C (82°F), compared to August's minimum of 24°C (75°F) and average of 27°C (81°F). Both months peak at the same maximum temperature of 32°C (90°F), but October experiences less overall precipitation, totaling 59 mm (2.3 in) over 16 days, while August sees higher precipitation at 92 mm (3.6 in) over 18 days. Interestingly, both months share the same humidity level of 80%, making them similarly humid. For a more detailed look at August's weather, you can check Cayenne weather in August.
October's weather shows a slight increase in rainfall compared to September, with a total precipitation of 59 mm over 16 days, while September reports 56 mm over only 12 days. Both months have similar average temperatures, with a minimum of 25°C (77°F) in October and 24°C (76°F) in September, maintaining an average of 28°C (82°F) and a maximum of 32°C (90°F) in both months. Humidity levels are also comparable, with October at 80% and September at 79%. For a more detailed look at September's climate, you can visit Cayenne weather in September.
In comparing the weather between October and November, October generally features warmer temperatures, with minimums around 25°C (77°F) and averages peaking at 28°C (82°F). It also experiences less rainfall, totaling 59 mm (2.3 in) across 16 days. In contrast, November sees a slight decrease in temperature, with an average of 27°C (81°F) and maximums reaching 31°C (88°F). However, November is significantly wetter, with precipitation soaring to 204 mm (8.0 in) over 24 days, and humidity slightly higher at 85%. For more detailed insights, you can check out this link: Cayenne weather in November.
October and December showcase a noticeable transition in weather patterns. In October, temperatures range from a minimum of 25°C (77°F) to a maximum of 32°C (90°F), with an average of 28°C (82°F). The month experiences 59 mm (2.3 in) of precipitation over approximately 16 days and maintains a humidity level of 80%. In contrast, December sees slightly cooler temperatures, with a minimum of 24°C (75°F) and a maximum of 30°C (86°F), averaging at 26°C (79°F). However, it brings significantly more rainfall, totaling 349 mm (13.7 in) over 29 days, and higher humidity at 84%. For more details on December weather, you can check Cayenne weather in December.
October in Cayenne showcases a distinct shift in weather patterns, with a warm average temperature that makes it an ideal time for those who enjoy tropical climates. Unlike the more fluctuating temperatures of the preceding months, October settles into a pleasant warmth, consistently hovering around 28°C. However, this month also brings an increase in humidity and precipitation, with rain gracing the area on about 16 days, adding a lush vibrancy to the landscape. The combination of warm air and moisture can create a tropical atmosphere, perfect for experiencing the rich, verdant nature of French Guiana. For a deeper dive into the climate nuances of this vibrant locale, check out Cayenne Climate.