Cayenne Weather in August

French Guiana · August climate averages and travel tips

Avg high29°C (83°F)
Avg low25°C (76°F)
Rainfall112 mm (4.4 in)
RatingPoor 4.3/10

In August, Cayenne has average highs of 29°C (83°F) and lows of 25°C (76°F). The month is moderately rainy, with about 112 mm (4.4 in) of rain spread over 19 days, one of the driest months of the year. Humidity averages 85%, so it feels sticky and hotter than the thermometer suggests. You get roughly 12.2 hours of daylight and a mix of sun and cloud.

Is August a good time to visit Cayenne?

August is not the best time to visit Cayenne (4.3/10) mainly because of the rain. The weather is much better in September and October.

Visiting Cayenne in August

August: warm, damp days

Cayenne stays warm in August, with highs around 29°C and nights near 25°C. The air feels sticky, and rain falls on about 19 days, though August is much drier than July. Showers can interrupt a walk, but they don't usually rule out a visit to Place des Palmistes or the Cayenne market.

With plenty of sunshine between showers, you can still explore the city outdoors. Save Fort Cépérou for a dry spell, and have a rainy-day stop in the Musée Alexandre-Franconie. The heat and humidity make long walks feel tiring, so don't cram too many sights into one afternoon.

Events and holiday crowds

The Tour de Guyane, a major cycling race, is usually held in August. It brings a lively feel to Cayenne when the route passes through town, though road closures can affect getting around. August 15 is Assumption Day, a public holiday in French Guiana; some shops and services may close.

If you hate crowds, September is usually a calmer bet. August overlaps with French summer school holidays, so visitor numbers and travel costs can be higher than in September or October. It's not necessarily packed, but don't expect the quietest time of year.

Make the most of your visit

August is a workable month for a city break, but it isn't the best time for dry-weather plans. September and October are drier overall, and September gets much less rain. If beaches or long trips inland are your main reason for coming, those months may suit you better.

Travelling with kids? Keep an indoor option handy for wet afternoons. Near Place des Palmistes, you can duck into the Musée Alexandre-Franconie, then try Cayenne's local broth, bouillon d'awara, at a restaurant. For the Tour de Guyane, ask locally which streets the race will use before setting out.

August weather at a glance

Average high29°C (83°F)
Average low25°C (76°F)
Daily mean27°C (80°F)
Rainfall112 mm (4.4 in)
Rainy days (1 mm+)19
Humidity85%
Cloud cover45%
Daylight12.2 hours
Est. sunshine7.4 hours/day
Wind6.1 km/h
vs July1°C warmer than July, with 113 mm less rain.

What to pack for Cayenne in August

Cayenne weather in other months

Jan28°C / 25°C314 mmPoorFeb28°C / 25°C301 mmPoorMar28°C / 25°C261 mmPoorApr28°C / 25°C375 mmPoorMay28°C / 25°C501 mmPoorJun28°C / 25°C297 mmPoorJul28°C / 25°C225 mmPoorAug29°C / 25°C112 mmPoorSep29°C / 25°C51 mmGoodOct30°C / 25°C57 mmGoodNov30°C / 25°C121 mmPoorDec28°C / 25°C328 mmPoor

← JulyBest time to visit CayenneSeptember →

Better weather in August nearby

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