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
| 17 June 2026 Wed 22.1 ° C ( 71.7°F )  Fog |
Feels Like : 17.9 ° C / 64.2°F Humidity : % 99 Pressure : 1014 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 |
|---|---|---|---|---|---|---|---|
| 17 June 2026 Wed |  Patchy rain nearby |
21.5 ° C | 31.2 ° C | 25.1 ° C | % 85 | 4.7 km/h | 80% |
| 18 June 2026 Thu | Patchy rain nearby |
20.8 ° C | 32.7 ° C | 25 ° C | % 83 | 6.5 km/h | 71% |
| 19 June 2026 Fri | Patchy rain nearby |
20.1 ° C | 33.2 ° C | 25.4 ° C | % 78 | 4.7 km/h | 62% |
| 20 June 2026 Sat | Patchy rain nearby |
21.5 ° C | 31.3 ° C | 24 ° C | % 89 | 5 km/h | 68% |
| 21 June 2026 Sun |  Moderate rain |
21.5 ° C | 30.2 ° C | 24.7 ° C | % 90 | 6.5 km/h | 88% |
| 22 June 2026 Mon | Patchy rain nearby |
21 ° C | 30.5 ° C | 24.1 ° C | % 91 | 7.6 km/h | 81% |
| 23 June 2026 Tue | Patchy rain nearby |
21.5 ° C | 31.5 ° C | 25.2 ° C | % 84 | 10.4 km/h | 42% |
| 24 June 2026 Wed | Patchy rain nearby |
21.6 ° C | 31.7 ° C | 24.2 ° C | % 89 | 7.2 km/h | 73% |
| 25 June 2026 Thu | Patchy rain nearby |
21.6 ° C | 30.8 ° C | 24.5 ° C | % 88 | 6.1 km/h | 60% |
| 26 June 2026 Fri | Patchy rain nearby |
20.9 ° C | 31.4 ° C | 24.9 ° C | % 84 | 9.4 km/h | 62% |
| 27 June 2026 Sat | Patchy rain nearby |
20.9 ° C | 31.2 ° C | 24.4 ° C | % 86 | 9 km/h | 59% |
| 28 June 2026 Sun | Patchy rain nearby |
21.5 ° C | 27.9 ° C | 23.8 ° C | % 92 | 6.5 km/h | 78% |
| 29 June 2026 Mon | Patchy rain nearby |
20.7 ° C | 31.6 ° C | 24.3 ° C | % 87 | 5 km/h | 78% |
| 30 June 2026 Tue | Patchy rain nearby |
21.4 ° C | 29.9 ° C | 24.6 ° C | % 87 | 6.1 km/h | 81% |
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