Sines Airport (SIE) 15 Day Weather Forecast, Sines Portugal
Current weather conditions and 15 day weather forecast for Sines Airport in Sines, Portugal 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 SIE
| 18 September 2026 Fri 18.9 ° C ( 66.1°F )  Overcast |
Feels Like : 17.7 ° C / 63.9°F Humidity : % 79 Pressure : 1015 mb Wind Speed : 14.8 kmph / 9.2 miles from NW 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 98 |
15-day weather forecast for Sines Airport, Sines, Portugal
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 18 September 2026 Fri | Overcast |
17.8 ° C | 19.5 ° C | 18.8 ° C | % 82 | 34.2 km/h | 16% |
| 19 September 2026 Sat |  Sunny |
19 ° C | 21 ° C | 19.9 ° C | % 73 | 24.1 km/h | 7% |
| 20 September 2026 Sun | Sunny |
19.9 ° C | 22.7 ° C | 21 ° C | % 78 | 24.8 km/h | 8% |
| 21 September 2026 Mon | Sunny |
19.6 ° C | 22.1 ° C | 20.6 ° C | % 81 | 25.2 km/h | 10% |
| 22 September 2026 Tue | Sunny |
19.2 ° C | 21.8 ° C | 20.1 ° C | % 82 | 20.9 km/h | 11% |
| 23 September 2026 Wed | Sunny |
19.5 ° C | 22.2 ° C | 20.3 ° C | % 76 | 15.8 km/h | 11% |
| 24 September 2026 Thu | Sunny |
19.5 ° C | 21.2 ° C | 20.2 ° C | % 80 | 21.6 km/h | 13% |
| 25 September 2026 Fri | Overcast |
19.3 ° C | 20.6 ° C | 20.1 ° C | % 78 | 18.4 km/h | 17% |
| 26 September 2026 Sat | Sunny |
19.2 ° C | 20.2 ° C | 19.6 ° C | % 88 | 17.6 km/h | 12% |
| 27 September 2026 Sun | Overcast |
19 ° C | 20.3 ° C | 19.6 ° C | % 89 | 15.8 km/h | 26% |
| 28 September 2026 Mon | Overcast |
19.1 ° C | 20.2 ° C | 19.8 ° C | % 88 | 28.4 km/h | 77% |
| 29 September 2026 Tue | Overcast |
19.3 ° C | 20.2 ° C | 19.9 ° C | % 89 | 29.9 km/h | 65% |
| 30 September 2026 Wed |  Patchy rain nearby |
18.7 ° C | 19.8 ° C | 19.3 ° C | % 90 | 36 km/h | 88% |
| 01 October 2026 Thu |  Light rain shower |
18.3 ° C | 19.6 ° C | 19 ° C | % 86 | 15.8 km/h | 83% |
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