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
| 14 March 2026 Sat 25.2 ° C ( 77.3°F )  Patchy light rain |
Feels Like : 28.5 ° C / 83.3°F Humidity : % 95 Pressure : 1010 mb Wind Speed : 4.3 kmph / 2.7 miles from NE 
Visibility : 9 km Precipitation (rainfall) : 2.09 mm Cloud (%) : 88 |
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 |
|---|---|---|---|---|---|---|---|
| 14 March 2026 Sat |  Moderate rain |
21.5 ° C | 27.1 ° C | 23.2 ° C | % 96 | 5 km/h | 97% |
| 15 March 2026 Sun | Moderate rain |
21.8 ° C | 26.9 ° C | 23.6 ° C | % 96 | 7.2 km/h | 91% |
| 16 March 2026 Mon |  Patchy rain nearby |
21 ° C | 31.9 ° C | 24.2 ° C | % 88 | 10.1 km/h | 87% |
| 17 March 2026 Tue | Patchy rain nearby |
20.4 ° C | 29.4 ° C | 23.8 ° C | % 84 | 7.9 km/h | 85% |
| 18 March 2026 Wed | Patchy rain nearby |
20.2 ° C | 29.3 ° C | 23.2 ° C | % 89 | 7.6 km/h | 89% |
| 19 March 2026 Thu | Patchy rain nearby |
19.8 ° C | 29.5 ° C | 22.6 ° C | % 87 | 7.2 km/h | 81% |
| 20 March 2026 Fri | Patchy rain nearby |
22.1 ° C | 32.1 ° C | 24.7 ° C | % 83 | 6.1 km/h | 74% |
| 21 March 2026 Sat | Patchy rain nearby |
20.7 ° C | 30.7 ° C | 24.3 ° C | % 88 | 7.6 km/h | 83% |
| 22 March 2026 Sun | Patchy rain nearby |
22 ° C | 30.3 ° C | 24.7 ° C | % 89 | 6.8 km/h | 81% |
| 23 March 2026 Mon | Patchy rain nearby |
21.6 ° C | 30.4 ° C | 24.7 ° C | % 89 | 9 km/h | 84% |
| 24 March 2026 Tue | Patchy rain nearby |
21.9 ° C | 30.3 ° C | 24.3 ° C | % 89 | 9 km/h | 84% |
| 25 March 2026 Wed | Patchy rain nearby |
21.8 ° C | 27.9 ° C | 24 ° C | % 92 | 7.9 km/h | 84% |
| 26 March 2026 Thu | Patchy rain nearby |
21.9 ° C | 28.7 ° C | 23.8 ° C | % 93 | 7.2 km/h | 87% |
| 27 March 2026 Fri | Patchy rain nearby |
21.1 ° C | 28.6 ° C | 24 ° C | % 90 | 6.5 km/h | 86% |
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