NOWPRT
EXPERIMENTAL NOWCAST FOR PORTO
EXPERIMENTAL FORECAST OFFICE - PORTO METRO
05:20 UTC THU DEC 25 2025
Immediate Forecast - Porto
Valid: 05:20 UTC to 18:00 UTC (06:20 to 19:00 local time)
Key Messages
- Dry conditions will continue through the morning and into the early evening with no rain expected.
- Clouds will increase early, but skies will begin to clear by midday.
- Winds will remain breezy in the morning, especially near the coast, then gradually ease.
- Temperatures will rise slowly through the day, reaching 11°C by early afternoon before cooling in the evening.
Current Conditions & Near-Term Outlook
As of 05:20 UTC (06:20 AM local time), Porto is dry with temperatures around 9°C and increasing cloud cover. Over the next few hours, skies will become mostly overcast by 08:00 UTC (9:00 AM), but no rain is expected. Winds will remain noticeable, with gusts near 40 km/h in the early morning, especially near coastal areas—loose outdoor items may shift in the breeze. By late morning, around 11:00 UTC (12:00 PM), clouds will break as skies clear rapidly, leading to a mix of sun and clouds by midday. Temperatures will rise to around 11°C between 12:00 and 15:00 UTC (1:00–4:00 PM), though the air will feel cool due to light winds and limited sunshine early on. Any lingering high clouds will continue to decrease through the afternoon.
Tonight/Tomorrow Morning
No precipitation is expected tonight. After sunset, skies will remain mostly clear to partly cloudy, allowing temperatures to cool steadily. By 20:00 UTC (9:00 PM), temperatures will drop to around 7°C and remain near that level through the night. It will feel chilly, especially in open or exposed areas. The most likely outcome remains dry overnight with light winds and no significant weather changes. Frost is not expected at sea level.
Experimental forecast - not official guidance