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
| 19 March 2026 Thu 20.9 ° C ( 69.7°F )  Fog |
Feels Like : 20.9 ° C / 69.7°F Humidity : % 98 Pressure : 1012 mb Wind Speed : 3.6 kmph / 2.2 miles from NNE 
Visibility : 0 km Precipitation (rainfall) : 0 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 |
|---|---|---|---|---|---|---|---|
| 19 March 2026 Thu |  Patchy rain nearby |
20.8 ° C | 28.7 ° C | 23.5 ° C | % 85 | 6.5 km/h | 89% |
| 20 March 2026 Fri |  Moderate rain |
20.2 ° C | 30.3 ° C | 23.8 ° C | % 88 | 5.8 km/h | 85% |
| 21 March 2026 Sat | Moderate rain |
20.7 ° C | 31.2 ° C | 24.2 ° C | % 89 | 6.8 km/h | 83% |
| 22 March 2026 Sun | Patchy rain nearby |
21.4 ° C | 32.2 ° C | 24.9 ° C | % 86 | 7.2 km/h | 79% |
| 23 March 2026 Mon | Moderate rain |
21.4 ° C | 31.4 ° C | 25 ° C | % 88 | 6.1 km/h | 87% |
| 24 March 2026 Tue | Patchy rain nearby |
22.4 ° C | 30 ° C | 24.4 ° C | % 91 | 8.3 km/h | 87% |
| 25 March 2026 Wed | Patchy rain nearby |
21.8 ° C | 30.4 ° C | 24.8 ° C | % 88 | 7.2 km/h | 86% |
| 26 March 2026 Thu | Moderate rain |
21.8 ° C | 29.1 ° C | 23.8 ° C | % 94 | 8.3 km/h | 87% |
| 27 March 2026 Fri | Patchy rain nearby |
21.3 ° C | 29.3 ° C | 24.1 ° C | % 90 | 7.9 km/h | 86% |
| 28 March 2026 Sat | Patchy rain nearby |
21.8 ° C | 30.8 ° C | 24.9 ° C | % 88 | 7.2 km/h | 85% |
| 29 March 2026 Sun | Patchy rain nearby |
21.8 ° C | 26.3 ° C | 23.3 ° C | % 94 | 4.7 km/h | 89% |
| 30 March 2026 Mon | Moderate rain |
22 ° C | 29 ° C | 24.2 ° C | % 94 | 6.1 km/h | 88% |
| 31 March 2026 Tue | Patchy rain nearby |
22.1 ° C | 30.4 ° C | 25 ° C | % 85 | 8.6 km/h | 85% |
| 01 April 2026 Wed | Patchy rain nearby |
20.8 ° C | 30.3 ° C | 24.4 ° C | % 87 | 7.2 km/h | 84% |
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