May weather forecast
French Guiana

May in French Guiana is characterized by high precipitation as the greater rainy season begins to taper off. The coastal city of Cayenne records an average rainfall of approximately 350mm (13.78"), marginally less than the peak seen in April. Nevertheless, the frequency of rainy days remains high, with about 20 rainy days throughout the month.

Inland regions like Saint-Laurent-du-Maroni also follow the trend of reduced rainfall, albeit still experiencing substantial precipitation during this month. The gradual decrease in rainfall indicates the transition away from the peak of the rainy season, although heavy rain events are still quite frequent.

The tropical climate of French Guiana ensures that temperatures during May remain consistent with previous months. Nighttime temperatures tend to hover around a minimum of 23°C (73.4°F), while daytime temperatures achieve a maximum of 29°C (84.2°F). Despite the slightly reduced rainfall, the temperature range remains steady, underscoring the region's stable tropical climate.

Sunlight in May is comparable to April, with an average of about 5 hours of sunshine per day in coastal areas. The frequency of partly cloudy to overcast skies is still high due to the lingering rainy season, even though the transition towards the lesser rainy season has begun.

Visitors to French Guiana in May should be prepared for high rainfall and humidity, albeit slightly less intense than in April. Despite the reduction in rainfall, weather conditions during this month still reflect the dominance of the rainy season, and travel plans should account for frequent rain events.

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• Cayenne - May »
  On the last day of the month, sunrise is at 06:15 and sunset at 18:38 -03. Sheltering under an umbrella becomes a common sight as May clocks the highest rainfall for the year in Cayenne, French Guiana.
• Kourou - May »
  The month with the most rainfall in Kourou is May, when the rain falls for 24.9 days and typically aggregates up to 503mm (19.8") of precipitation. On the first day of May in Kourou sunrise is at 06:18 and sunset at 18:36.
• Remire-Montjoly - May »
  On the first day of May in Remire-Montjoly sunrise is at 06:17 and sunset at 18:35. Water temperature between 25°C (77°F) and 29°C (84.2°F) provides warmth and pleasure, making water activities enjoyable for lengthened periods without feeling uncomfortable.
• Maripasoula - May »
  On the last day of the month, in Maripasoula sunrise is at 06:24 and sunset at 18:43 -03. May is the most humid month in Maripasoula, French Guiana, with an average relative humidity of 90%.
• Mana - May »
  The month with the most rainfall in Mana is May, when the rain falls for 28 days and typically aggregates up to 137mm (5.39") of precipitation. In Mana the average seawater temperature in May is 27.9°C (82.2°F).
• Apatou - May »
  The month with the most rainfall in Apatou is May, when the rain falls for 28 days and typically aggregates up to 137mm (5.39") of precipitation. On the first day of May in Apatou sunrise is at 06:25 and sunset at 18:43.
• Grand-Santi - May »
  The month with the most rainfall in Grand-Santi is May, when the rain falls for 26.3 days and typically aggregates up to 171mm (6.73") of precipitation. The month with the most rainfall in Grand-Santi is May, when the rain falls for 26.3 days and typically aggregates up to 171mm (6.73") of precipitation.
• Camopi - May »
  With an average relative humidity of 91%, May is the most humid month in Camopi, French Guiana. May is the most humid month in Camopi with an average relative humidity of 91%.
• Iracoubo - May »
  On the last day of the month, in Iracoubo, sunrise is at 06:18 and sunset at 18:43 -03. Iracoubo greets May with an average high-temperature of a still moderately hot 28.5°C (83.3°F), marking a slight deviation from the preceding month.
• Saul - May »
  The month with the most rainfall in Saul is May, when the rain falls for 25.9 days and typically aggregates up to 192mm (7.56") of precipitation. In the month of May, the average temperature in Saul, French Guiana, dips to a pleasant 21.9°C (71.4°F) during the night.