Cayenne Weather in August
French Guiana · August climate averages and travel tips
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 high | 29°C (83°F) |
|---|---|
| Average low | 25°C (76°F) |
| Daily mean | 27°C (80°F) |
| Rainfall | 112 mm (4.4 in) |
| Rainy days (1 mm+) | 19 |
| Humidity | 85% |
| Cloud cover | 45% |
| Daylight | 12.2 hours |
| Est. sunshine | 7.4 hours/day |
| Wind | 6.1 km/h |
| vs July | 1°C warmer than July, with 113 mm less rain. |
What to pack for Cayenne in August
- light, breathable clothing
- sunscreen and a hat
- an umbrella or rain jacket
Cayenne weather in other months
← JulyBest time to visit CayenneSeptember →
Better weather in August nearby
- Cordoba22°C · 5 mm · Excellent
- Arequipa26°C · 1 mm · Excellent
- Campinas27°C · 29 mm · Excellent
- Sucre22°C · 9 mm · Excellent
- Mendoza20°C · 8 mm · Excellent
- Belo Horizonte28°C · 17 mm · Excellent
Nearby in August
- Paramaribo29°C · 112 mm
- Georgetown29°C · 188 mm
- Belem31°C · 88 mm
- Port of Spain30°C · 209 mm
- Bridgetown29°C · 93 mm
- Manaus31°C · 47 mm
Where else is good in August? See where to go in August.