When to go · Cayenne
Cayenne in August
Great month. Dry season starts; best weather.
Key facts
- Verdict
- Great
- Temperature
- 31°C (88°F)88°F (31°C) / 23°C (73°F)73°F (23°C)
- average high / low
- Rain days
- 10
- Crowds
- Medium
- French Guiana overall
- Prices
- High
- French Guiana overall
Verdict
Dry season starts; best weather.
All twelve months in one grid — weather, crowds and prices, with gaps left as unknown.
Is another month better than August?
No other month rates higher than August for Cayenne in this guide.
Weather in August
- CayenneHighs around 31 °C (88 °F), lows around 23 °C (73 °F), rain on about 10 daysHighs around 88 °F (31 °C), lows around 73 °F (23 °C), rain on about 10 days
- Coast (Cayenne to Saint-Laurent), French Guiana · Cayenne, Kourou, Sinnamary, Saint-Laurent, Awala-Yalimapobest weather
Hot and humid, 23–32 °C (73–90 °F). Dry season mid-August–November; the 'petit été de mars' brings a short drier break in March; heaviest rain April–June.Hot and humid, 73–90 °F (23–32 °C). Dry season mid-August–November; the 'petit été de mars' brings a short drier break in March; heaviest rain April–June.
Dry season season
The most reliable window for walking, the beach and day trips; September–October are typically the driest and hottest.
Watch: Still hot and humid by any temperate-climate standard — this is a dry season, not a cool one.
Sea-turtle nesting season
Leatherback and green turtles nest on beaches near Cayenne; guided night visits are the responsible way to see it.
Watch: Confirm current-year dates and any beach access restrictions locally.
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Assumption Day
15 August · Nationwide
Public holiday; many shops close.
Sea-turtle nesting season check
Roughly April to August, peak varies by species · Beaches near Cayenne and further along the coast
Guided night visits become possible; independent access to nesting beaches may be restricted at night — confirm locally.
Dry season (carême)
August to November · Citywide
The most reliable weather window for walking, the beach and day trips to Kourou.
Crowds and prices
- Crowds · French Guiana overall
- Medium
- Prices · French Guiana overall
- High
French Guiana overall: Dry season starts; hatchlings on beaches.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in Cayenne, side by side.
Verdict
Aug: Great
Sep: Great
Daytime high
Aug: 31 °C (88 °F)88 °F (31 °C)
Sep: 32 °C (90 °F)90 °F (32 °C)
Night low
Aug: 23 °C (73 °F)73 °F (23 °C)
Sep: 23 °C (73 °F)73 °F (23 °C)
Rain days
Aug: 10
Sep: 6 (better)
Crowds
Aug: Medium
Sep: Low
Prices
Aug: High
Sep: Medium
Festivals listed
Aug: 3
Sep: 1
August: Dry season starts; best weather.
September: Dry season.
Cayenne: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen
- A rain jacket or umbrella and shoes that dry fast