Grand-Santi Airport (GSI) 15 Day Weather Forecast, Grand-Santi French Guiana
Current weather conditions and 15 day weather forecast for Grand-Santi Airport in Grand-Santi, French Guiana including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at GSI
| 13 December 2025 Sat 22.3 ° C ( 72.2°F )  Light rain shower |
Feels Like : 24.9 ° C / 76.8°F Humidity : % 99 Pressure : 1011 mb Wind Speed : 3.6 kmph / 2.2 miles from ENE 
Visibility : 10 km Precipitation (rainfall) : 0.58 mm Cloud (%) : 66 |
15-day weather forecast for Grand-Santi Airport, Grand-Santi, French Guiana
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 13 December 2025 Sat |  Moderate rain |
21.8 ° C | 27.2 ° C | 23.1 ° C | % 96 | 8.6 km/h | 95% |
| 14 December 2025 Sun | Moderate rain |
21.3 ° C | 27 ° C | 23.3 ° C | % 96 | 9 km/h | 88% |
| 15 December 2025 Mon | Moderate rain |
21.5 ° C | 29.1 ° C | 23.8 ° C | % 92 | 7.2 km/h | 88% |
| 16 December 2025 Tue | Moderate rain |
21.2 ° C | 29 ° C | 23.6 ° C | % 93 | 8.3 km/h | 82% |
| 17 December 2025 Wed |  Patchy rain nearby |
20.6 ° C | 27.3 ° C | 22.4 ° C | % 96 | 6.1 km/h | 77% |
| 18 December 2025 Thu | Patchy rain nearby |
21.1 ° C | 30.5 ° C | 23.5 ° C | % 92 | 6.8 km/h | 68% |
| 19 December 2025 Fri | Patchy rain nearby |
20.2 ° C | 28.7 ° C | 23 ° C | % 93 | 6.8 km/h | 83% |
| 20 December 2025 Sat | Patchy rain nearby |
20.7 ° C | 28.7 ° C | 23.5 ° C | % 91 | 6.1 km/h | 81% |
| 21 December 2025 Sun | Patchy rain nearby |
21.4 ° C | 31.4 ° C | 24.3 ° C | % 85 | 7.9 km/h | 83% |
| 22 December 2025 Mon | Patchy rain nearby |
20.3 ° C | 30.6 ° C | 23.7 ° C | % 88 | 7.6 km/h | 77% |
| 23 December 2025 Tue | Patchy rain nearby |
20 ° C | 29.6 ° C | 23.3 ° C | % 90 | 6.1 km/h | 84% |
| 24 December 2025 Wed | Patchy rain nearby |
20.2 ° C | 29.3 ° C | 23.4 ° C | % 89 | 6.5 km/h | 89% |
| 25 December 2025 Thu | Patchy rain nearby |
20.1 ° C | 30.6 ° C | 23.7 ° C | % 87 | 6.5 km/h | 88% |
| 26 December 2025 Fri | Patchy rain nearby |
20.5 ° C | 31.8 ° C | 24.5 ° C | % 84 | 5.8 km/h | 89% |
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