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
| 12 January 2026 Mon 22 ° C ( 71.6°F )  Moderate or heavy rain shower |
Feels Like : 24.7 ° C / 76.4°F Humidity : % 99 Pressure : 1012 mb Wind Speed : 5 kmph / 3.1 miles from NE 
Visibility : 7 km Precipitation (rainfall) : 6.33 mm Cloud (%) : 100 |
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 |
|---|---|---|---|---|---|---|---|
| 11 January 2026 Sun |  Heavy rain |
20.4 ° C | 29.1 ° C | 23.4 ° C | % 92 | 8.3 km/h | 97% |
| 12 January 2026 Mon |  Patchy rain nearby |
20.8 ° C | 27.4 ° C | 23.1 ° C | % 91 | 5.8 km/h | 90% |
| 13 January 2026 Tue | Patchy rain nearby |
20.8 ° C | 29.1 ° C | 23.8 ° C | % 88 | 8.6 km/h | 82% |
| 14 January 2026 Wed | Patchy rain nearby |
21.3 ° C | 30.4 ° C | 24.2 ° C | % 89 | 8.3 km/h | 80% |
| 15 January 2026 Thu | Patchy rain nearby |
21.1 ° C | 26.8 ° C | 23.2 ° C | % 94 | 7.9 km/h | 84% |
| 16 January 2026 Fri | Patchy rain nearby |
21.3 ° C | 27.1 ° C | 22.8 ° C | % 95 | 7.6 km/h | 87% |
| 17 January 2026 Sat | Patchy rain nearby |
21.1 ° C | 29.4 ° C | 24 ° C | % 91 | 7.9 km/h | 82% |
| 18 January 2026 Sun | Patchy rain nearby |
21.5 ° C | 27.8 ° C | 23.7 ° C | % 94 | 6.5 km/h | 88% |
| 19 January 2026 Mon | Patchy rain nearby |
21.1 ° C | 29.9 ° C | 24.2 ° C | % 89 | 7.6 km/h | 74% |
| 20 January 2026 Tue | Patchy rain nearby |
21 ° C | 28.8 ° C | 23.8 ° C | % 91 | 7.6 km/h | 85% |
| 21 January 2026 Wed | Patchy rain nearby |
21.1 ° C | 28.9 ° C | 23.9 ° C | % 88 | 8.6 km/h | 88% |
| 22 January 2026 Thu | Patchy rain nearby |
20.9 ° C | 30.2 ° C | 24.3 ° C | % 85 | 8.3 km/h | 88% |
| 23 January 2026 Fri | Patchy rain nearby |
20.6 ° C | 30.9 ° C | 24.5 ° C | % 82 | 9.7 km/h | 0% |
| 24 January 2026 Sat | Patchy rain nearby |
21 ° C | 29.6 ° C | 24.1 ° C | % 88 | 7.9 km/h | 86% |
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