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
| 22 February 2026 Sun 34.2 ° C ( 93.6°F )  Sunny |
Feels Like : 35 ° C / 94.9°F Humidity : % 33 Pressure : 1011 mb Wind Speed : 9.7 kmph / 6 miles from ENE 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 20 |
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 |
|---|---|---|---|---|---|---|---|
| 22 February 2026 Sun |  Partly Cloudy |
18.8 ° C | 34.3 ° C | 25.5 ° C | % 70 | 11.5 km/h | 0% |
| 23 February 2026 Mon | Partly Cloudy |
18.3 ° C | 31.8 ° C | 24.8 ° C | % 70 | 11.5 km/h | 0% |
| 24 February 2026 Tue |  Patchy rain nearby |
18.4 ° C | 33.5 ° C | 24.7 ° C | % 72 | 13.7 km/h | 86% |
| 25 February 2026 Wed | Patchy rain nearby |
18.5 ° C | 33.1 ° C | 24.7 ° C | % 71 | 11.2 km/h | 0% |
| 26 February 2026 Thu | Partly Cloudy |
18.5 ° C | 34.2 ° C | 24.6 ° C | % 72 | 11.2 km/h | 0% |
| 27 February 2026 Fri |  Cloudy |
17.6 ° C | 33.8 ° C | 25.1 ° C | % 66 | 10.8 km/h | 0% |
| 28 February 2026 Sat | Partly Cloudy |
17.5 ° C | 34.7 ° C | 25.4 ° C | % 64 | 10.8 km/h | 0% |
| 01 March 2026 Sun | Partly Cloudy |
17.1 ° C | 35.4 ° C | 25.2 ° C | % 65 | 11.5 km/h | 0% |
| 02 March 2026 Mon | Partly Cloudy |
17.8 ° C | 35.8 ° C | 25.9 ° C | % 65 | 9.7 km/h | 0% |
| 03 March 2026 Tue | Partly Cloudy |
17.8 ° C | 35.1 ° C | 25.9 ° C | % 62 | 9.7 km/h | 0% |
| 04 March 2026 Wed | Partly Cloudy |
17.7 ° C | 34.7 ° C | 25.8 ° C | % 66 | 9.4 km/h | 0% |
| 05 March 2026 Thu | Patchy rain nearby |
20.2 ° C | 34.6 ° C | 25.4 ° C | % 75 | 6.1 km/h | 64% |
| 06 March 2026 Fri | Patchy rain nearby |
21.4 ° C | 32.9 ° C | 25.9 ° C | % 75 | 8.6 km/h | 89% |
| 07 March 2026 Sat |  Moderate rain |
20.9 ° C | 30.1 ° C | 24.3 ° C | % 87 | 6.8 km/h | 84% |
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