Location & Surroundings
Sião is a settlement in Viana do Castelo, Portugal, at 67 m elevation. The nearest larger town is Darque, 7 km to the northwest. The national capital Lisbon is about 325 km to the south. The nearest airport is Braga Airport, 22 km away.
Basic Data
- Type populated place (PPL)
- a city, town, village, or other agglomeration of buildings where people live and work
Geography
-
Coordinates
41° 38' 39" N, 8° 41' 58" W
- Elevation DEM: 67 m
- Timezone Europe/Lisbon
- Time Shift GMT 0 (DST 1)
Statistics & Country
- Pop. Density 764 p/km²
- Built-up 17.3%
- Settlement Suburban / peri-urban
- Currency Euro (EUR)
- Phone Prefix +351
Sun & Local Time
- Local time 12:03
- Sunrise 07:14
- Sunset 19:44
- Day length 12 h 30 min
Other populated places nearby
Nearby
Weather in Siao
Current conditions and a 3-day (72-hour) weather forecast for Siao, updated from the NOAA GFS model.
Now 16.2 C with mostly clear skies and a 4.0 m/s northerly wind. Next 24h: 14.1 to 24.9 C, max wind 6.3 m/s. No precipitation expected. Solar peaks near 555 W/m2.
Temperature
16.2 C
Wind
4.0 m/s N (355 deg)
Humidity
92 %
Pressure
1,022.0 hPa
Clouds
1 %
Precip
0.00 mm
Solar
0.0 W/m2
UV-B
n/a
| Hour | Temp (C) | Wind (m/s) | Dir (deg) | RH (%) | Pressure (hPa) | Precip (step/total mm) | Clouds (%) | Solar (W/m2) | UV-B (W/m2) |
|---|---|---|---|---|---|---|---|---|---|
| NOW | 16.2 | 4.0 | 355 | 92 | 1,022.0 | - / 0.00 | 1 | 0.0 | n/a |
| 6h | 14.8 | 4.3 | 8 | 77 | 1,021.6 | 0.00 / 0.00 | 0 | 0.0 | n/a |
| 12h | 24.9 | 5.0 | 14 | 34 | 1,020.3 | 0.00 / 0.00 | 3 | 430.2 | n/a |
| 18h | 22.5 | 6.3 | 357 | 38 | 1,018.2 | 0.00 / 0.00 | 100 | 554.6 | n/a |
| Tomorrow | 14.1 | 3.1 | 30 | 76 | 1,019.8 | 0.00 / 0.00 | 65 | 3.0 | n/a |
| 30h | 12.5 | 2.4 | 38 | 84 | 1,019.5 | 0.00 / 0.00 | 6 | 0.0 | n/a |
| 36h | 22.9 | 3.8 | 344 | 42 | 1,019.1 | 0.00 / 0.00 | 100 | 390.5 | n/a |
| 42h | 19.5 | 5.6 | 334 | 65 | 1,016.5 | 0.00 / 0.00 | 100 | 487.9 | n/a |
| Friday | 14.5 | 3.2 | 17 | 77 | 1,017.1 | 0.00 / 0.00 | 100 | 2.5 | n/a |
| 54h | 13.0 | 2.6 | 43 | 76 | 1,016.4 | 0.00 / 0.00 | 100 | 0.0 | n/a |
| 60h | 25.6 | 2.7 | 321 | 36 | 1,016.4 | 0.00 / 0.00 | 6 | 413.6 | n/a |
| 66h | 21.4 | 3.0 | 332 | 59 | 1,015.0 | 0.00 / 0.00 | 10 | 539.1 | n/a |
| Saturday | 17.4 | 2.4 | 56 | 57 | 1,016.5 | 0.00 / 0.00 | 5 | 2.6 | n/a |
Source: NOAA GFS 0.25° (run 2026-09-16 00:00 UTC).
FAQ
What is the current weather and next 24-hour outlook in Siao?
Now 16.2 C with mostly clear skies and a 4.0 m/s northerly wind. Next 24h: 14.1 to 24.9 C, max wind 6.3 m/s. No precipitation expected. Solar peaks near 555 W/m2.
Is precipitation expected in the next 24 hours?
No measurable precipitation is expected in the next 24 hours.
When are sunrise and sunset in Siao today?
Sunrise around 07:14 and sunset around 19:44 (local time). Day length about 12h 30m.
What is the local time in Siao?
Local time is 12:03. Time zone: Europe/Lisbon (UTC+01:00).
What type of place is Siao?
Siao is a populated place.
What is the elevation of Siao?
DEM 67 m.
Where is Siao located?
It is at 41.64413, -8.69957 (latitude, longitude).
Which country is Siao in?
It is in Portugal.