August weather forecast
French Guiana

August in French Guiana continues to showcase the characteristics of the lesser rainy season, with decreased precipitation levels being a prominent feature. In the coastal city of Cayenne, rainfall amounts average about 100mm (3.94"), a decrease from the previous month and one of the driest months of the year. The frequency of rainy days is also lower, with an average of about 10 days experiencing rain throughout the month.

Inland areas, such as Saint-Laurent-du-Maroni, maintain this trend of diminished rainfall, further highlighting the extent of the lesser rainy season. The gradual reduction in rainfall is a key characteristic of this period, resulting in somewhat drier conditions across the country.

In keeping with the patterns observed throughout the year, temperatures in August remain stable. Nighttime lows average around 23°C (73.4°F), while daytime highs reach about 31°C (87.8°F), making August one of the warmest months of the year in French Guiana.

In August, sunlight levels slightly increase, with coastal regions receiving approximately 7 hours of sunshine per day. The decrease in rainfall and cloudy conditions contributes to clearer skies, with overcast days becoming less common as the month progresses.

August presents an opportune time for visitors to French Guiana, given the reduced rainfall and increased sunlight. Despite the still noticeable humidity, the drier conditions and relatively clear skies make this month appealing for those seeking outdoor exploration and wildlife sightings.

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• Cayenne - August »
  On the last day of August, in Cayenne sunrise is at 06:23 and sunset at 18:35 -03. The months with the highest UV index in Cayenne are January through June, August through November, with an average maximum UV index of 12.
• Kourou - August »
  August is the month with the warmest seawater in Kourou with an average sea temperature of 28.6°C (83.5°F). On the first day of August in Kourou, French Guiana, sunrise is at 06:26 and sunset at 18:47.
• Remire-Montjoly - August »
  August is the month with the warmest seawater in Remire-Montjoly, with an average sea temperature of 28.7°C (83.7°F). The month with the warmest seawater in Remire-Montjoly is August, with an average sea temperature of 28.7°C (83.7°F).
• Maripasoula - August »
  In Maripasoula the average relative humidity in August is 79%. August through November, with an average maximum UV index of 7, are months with the highest UV index in Maripasoula, French Guiana.
• Mana - August »
  In Mana in August, the average water temperature is 28.4°C (83.1°F). August brings with it warm days in Mana, as the temperature climbs to 32°C (89.6°F).
• Apatou - August »
  In Apatou, French Guiana, in August, during 19 rainfall days, 66mm (2.6") of precipitation is typically accumulated. The average relative humidity in August in Apatou is 82%.
• Grand-Santi - August »
  In Grand-Santi, during August, the rain falls for 15.8 days and regularly aggregates up to 43mm (1.69") of precipitation. On the last day of August, in Grand-Santi, sunrise is at 06:31 and sunset at 18:43 -03.
• Camopi - August »
  August in Camopi, French Guiana script significantly lesser rainy days, plummeting to a low of 21.1. In Camopi, in August, during 21.1 rainfall days, 60mm (2.36") of precipitation is typically accumulated.
• Iracoubo - August »
  In Iracoubo in August, during 20.9 rainfall days, 71mm (2.8") of precipitation is typically accumulated. In Iracoubo in August, during 20.9 rainfall days, 71mm (2.8") of precipitation is typically accumulated.
• Saul - August »
  In Saul during August, the rain falls for 18.8 days and regularly aggregates up to 76mm (2.99") of precipitation. In Saul, during August, the rain falls for 18.8 days and regularly aggregates up to 76mm (2.99") of precipitation.