French Guiana (Cayenne)
August
Weather in French Guiana for August 2025
Your guide to French Guiana weather in August - trends and predictions
In general, the average temperature in French Guiana at the beginning of August is 31 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 32.1 °C by the end of August.
Expect significant rainfall in French Guiana during August, with an average of 18 rainy days.
Is August a good time to visit French Guiana? check out the best time to travel to French Guiana page.
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13
Dry days
18
Rainy days
0
Snow days
31°/23°
Temperatures
15 km/h
Avg max wind
77 %
Avg humidity
French Guiana in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  30° | 2 31° | 3  32° | ||||
| 4 31° | 5 31° | 6  31° | 7 31° | 8  30° | 9 31° | 10 31° |
| 11  31° | 12 32° | 13 31° | 14 33° | 15 32° | 16 32° | 17 32° |
| 18 32° | 19  32° | 20 32° | 21 32° | 22 32° | 23  32° | 24 32° |
| 25 32° | 26 32° | 27 33° | 28 32° | 29 32° | 30 32° | 31 32° |
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Temperatures trend during August in French Guiana
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Moderate or heavy rain shower | 30° /23° | 6.7 mm | 8 | |
| 2 Aug. | Moderate or heavy rain shower | 31° /23° | 8.8 mm | 7 | |
| 3 Aug. | Heavy rain at times | 32° /23° | 6.3 mm | 7 | |
| 4 Aug. | Moderate or heavy rain shower | 31° /23° | 1.7 mm | 7 | |
| 5 Aug. | Moderate or heavy rain shower | 31° /23° | 1 mm | 7 | |
| 6 Aug. | Patchy rain possible | 31° /23° | 1.2 mm | 8 | |
| 7 Aug. | Patchy rain possible | 31° /23° | 1 mm | 8 | |
| 8 Aug. | Overcast | 30° /23° | 0.3 mm | 7 | |
| 9 Aug. | Patchy rain possible | 31° /23° | 0.5 mm | 7 | |
| 10 Aug. | Patchy rain possible | 31° /23° | 0.4 mm | 7 | |
| 11 Aug. | Partly cloudy | 31° /23° | 0.3 mm | 8 | |
| 12 Aug. | Partly cloudy | 32° /22° | 0.1 mm | 8 | |
| 13 Aug. | Moderate or heavy rain shower | 31° /24° | 1.7 mm | 7 | |
| 14 Aug. | Patchy rain possible | 33° /22° | 3.2 mm | 8 | |
| 15 Aug. | Moderate or heavy rain shower | 32° /22° | 5.8 mm | 8 | |
| 16 Aug. | Moderate or heavy rain shower | 32° /22° | 4.2 mm | 8 | |
| 17 Aug. | Moderate or heavy rain shower | 32° /23° | 1.4 mm | 8 | |
| 18 Aug. | Moderate or heavy rain shower | 32° /22° | 5.3 mm | 7 | |
| 19 Aug. | Cloudy | 32° /23° | 1.1 mm | 7 | |
| 20 Aug. | Cloudy | 32° /23° | 0 mm | 8 | |
| 21 Aug. | Patchy rain possible | 32° /23° | 0.7 mm | 7 | |
| 22 Aug. | Heavy rain at times | 32° /23° | 2.4 mm | 8 | |
| 23 Aug. | Sunny | 32° /22° | 0 mm | 8 | |
| 24 Aug. | Moderate rain at times | 32° /22° | 0.8 mm | 7 | |
| 25 Aug. | Light rain shower | 32° /23° | 1.6 mm | 7 | |
| 26 Aug. | Cloudy | 32° /23° | 0 mm | 7 | |
| 27 Aug. | Partly cloudy | 33° /23° | 1.1 mm | 8 | |
| 28 Aug. | Partly cloudy | 32° /24° | 3.8 mm | 8 | |
| 29 Aug. | Overcast | 32° /23° | 0.8 mm | 7 | |
| 30 Aug. | Partly cloudy | 32° /23° | 0.3 mm | 8 | |
| 31 Aug. | Partly cloudy | 32° /23° | 0.2 mm | 8 | |
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Important Notice
Our weather forecast for French Guiana in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the French Guiana forecast closer to your planned date for the most up-to-date weather information.
French Guiana in August - FAQ
What are the expected maximum and minimum temperatures in French Guiana during August?
During August, expect a variety of temperatures with highs around 31° and lows near 23°, suitable for diverse activities and preferences.
How much rainfall should be expected in French Guiana during August?
Moderate rainfall is anticipated in French Guiana during August, with a total of 84.3 mm spread over approximately 18 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in French Guiana during August?
The average wind speed in French Guiana during August is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to French Guiana in August?
As you prepare for your trip to French Guiana in August, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in French Guiana, during August, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
- Insect Repellent: For destinations with mosquitos or other insects
August rainfall patterns in French Guiana
Explore the daily rainfall trends and prepare for French Guianas August weather 💧
UV exposure in French Guiana during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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