October weather forecast
French Guiana

October in French Guiana marks a distinctive shift towards the greater rainy season. In Cayenne, the coastal capital city, rainfall significantly increases, with an average of about 200mm (7.87"), a noticeable rise from September's figures. Concurrently, the number of rainy days increases, averaging 15 days throughout the month, signalling the commencement of the greater rainy season.

Inland regions, including the city of Saint-Laurent-du-Maroni, follow a similar trend, witnessing an uptick in rainfall during October. This nationwide increase in precipitation is indicative of the advancing rainy season, with weather patterns becoming progressively wetter.

Despite the changes in rainfall, October temperatures in French Guiana remain largely steady, consistent with the pattern seen throughout the year. Nighttime lows typically hover around 23°C (73.4°F), while daytime highs reach approximately 30°C (86°F). The increasing rainfall does not significantly impact the temperature range, affirming the consistent warmth of French Guiana's tropical climate.

With the return of the rainy season, sunlight in October decreases slightly compared to previous months. Coastal regions average around 6 hours of sunshine per day, with the increased cloud cover often resulting in partly cloudy to overcast skies.

For visitors to French Guiana, October represents a transitional period. While the early part of the month may still offer stable conditions, the increasing rainfall and overcast skies towards the end of the month indicate the approaching intensification of the rainy season. Thus, travel plans during this month should take into account the progressively wetter weather conditions.

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• Cayenne - October »
  Cayenne experiences its highest temperatures in October, with an average peak of 32.2°C (90°F) and a low of 22.3°C (72.1°F). In Cayenne, during October, the rain falls for 7.6 days and regularly aggregates up to 63mm (2.48") of precipitation.
• Kourou - October »
  With its average high temperature of 31.9°C (89.4°F) and a low of 22.8°C (73°F), October is regarded as the warmest month in Kourou, French Guiana. October, known for its average high temperature of 31.9°C (89.4°F) and an average low temperature of 22.8°C (73°F), is the warmest month in Kourou.
• Remire-Montjoly - October »
  In October, the average sea temperature in Remire-Montjoly is 28.5°C (83.3°F). In October, on the first day of the month, sunrise is at 06:16 and sunset at 18:20.
• Maripasoula - October »
  October is the least humid month in Maripasoula with an average relative humidity of 72%. The month with the least rainfall in Maripasoula is October, when the rain falls for 10.4 days and typically collects 21mm (0.83") of precipitation.
• Mana - October »
  October is the warmest month in Mana with an average high-temperature of 33.1°C (91.6°F) and an average low-temperature of 22.8°C (73°F). With an average relative humidity of 77%, October is the least humid month in Mana.
• Apatou - October »
  October proves to be the warmest month in Apatou recording an average peak temperature of 33.1°C (91.6°F) and a minimum temperature of 22.8°C (73°F). On the first day of October in Apatou sunrise is at 06:24 and sunset at 18:28.
• Grand-Santi - October »
  Temperature records in Grand-Santi mark October as the warmest month, with highs averaging 34.8°C (94.6°F) and lows at 21.4°C (70.5°F). In Grand-Santi in October, it is raining for 11.3 days, with typically 21mm (0.83") of accumulated precipitation.
• Camopi - October »
  October in Camopi, French Guiana further pushes the temperature pointer, pushing the boundaries up to a scorching 34.3°C (93.7°F). October is the least humid month in Camopi, with an average relative humidity of 75%.
• Iracoubo - October »
  The months with the lowest humidity in Iracoubo are September and October, with an average relative humidity of 77%. September and October are known as Iracoubo's warmest months, with an average high-temperature of 30.9°C (87.6°F).
• Saul - October »
  With an average relative humidity of 72%, October is the least humid month in Saul. With an average relative humidity of 72%, October is the least humid month in Saul.