NOWPRT
EXPERIMENTAL NOWCAST FOR ESPINHO
EXPERIMENTAL FORECAST OFFICE - PORTO METRO
17:21 UTC THU DEC 25 2025

Immediate Forecast - Espinho

Valid: 2025-12-25T18:00 through 2025-12-26T08:00

Key Messages

• Temperatures will fall steadily through the evening, reaching around 4°C by 2 AM and remaining near that level through dawn.
• No precipitation is expected tonight—models show strong agreement on dry conditions.
• Light frost may form on sheltered surfaces late tonight into early Friday morning due to clear skies and calm winds.
• Winds will ease to near calm by early morning, then become light from the east-southeast by daybreak.

Current Conditions & Near-Term Outlook

As of 5:21 PM, Espinho is experiencing 8°C under mostly clear skies, with light winds from the west-northwest. Over the next several hours, temperatures will begin a steady decline from around 8°C at 6 PM toward a low near 4°C by 2 AM. The air will remain dry throughout the night—there is 0% chance of rain, with all model runs in full agreement on no precipitation. Skies will remain mostly clear through the evening, gradually increasing in cloudiness after 2 AM, but no weather impacts are expected from the cloud cover.

This Evening

From 6 PM to midnight, expect clear and quiet conditions with temperatures falling from 8°C to around 5°C by 11 PM. Winds will continue to ease, dropping from 10 km/h to less than 5 km/h by 10 PM and becoming nearly calm by midnight. With clear skies and light winds, radiational cooling will be efficient, especially in sheltered areas such as gardens, parks, and rural zones where frost cannot be ruled out after 4 AM. Urban areas will likely remain just above freezing, but isolated patches of frost may develop on grassy or elevated surfaces. Travel impacts are expected to be minimal, though drivers should remain cautious on untreated surfaces late overnight.

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Experimental forecast - not official guidance