EXTPRT
EXPERIMENTAL LONGRANGE FOR GONDOMAR
EXPERIMENTAL FORECAST OFFICE - PORTO METRO
05:22 UTC THU DEC 25 2025
Long-Range Forecast - Gondomar
Issued: 05:22 UTC Thursday, December 25, 2025 | Valid: 15 days
| Date | Conditions | Low | High | Notes |
|---|---|---|---|---|
| Dec 25 | Clear | 3°C | 10°C | Dry with light winds; good day for outdoor activities. Pack warm layers for morning and evening. |
| Dec 26 | Clear | 1°C | 11°C | Dry, but near-freezing overnight. Frost possible on grassy surfaces. |
| Dec 27 | Clear | 4°C | 10°C | Dry; gusty afternoon (up to 52 km/h). Sheltered areas best for outdoor plans. |
| Dec 28 | Clear | 7°C | 13°C | Mild and dry. Good conditions for outdoor activities. |
| Dec 29 | Clear | 5°C | 14°C | Dry and mild. Ideal for walking or light exercise. |
| Dec 30 | Clear | 3°C | 13°C | Dry, cooler night. Frost possible in low-lying areas. |
| Dec 31 | Overcast | 2°C | 8°C | Dry but cool. Cloudy skies may limit sunshine. |
| Jan 1 | Clear | 0°C | 8°C | Slight chance of light rain (10%). Freeze possible overnight. |
| Jan 2 | Light Drizzle | -1°C | 7°C | Light rain likely, with brief snow possible at dawn. Snow accumulation: Grass: trace to light dusting; Pavement: little to no accumulation (melting); Elevated surfaces: trace.** |
| Jan 3 | Clear | 1°C | 7°C | Very light rain possible (14% chance), but snow not expected. Any wetness will melt on contact. |
| Jan 4 | Clear | -1°C | 8°C | Dry, but below freezing overnight. Frost likely. |
| Jan 5 | Light Drizzle | 3°C | 8°C | Light rain over many hours (23h), low intensity. Roads may be damp. Gusty (41 km/h). |
| Jan 6 | Light Drizzle | 5°C | 10°C | Persistent light rain (24h), moderate total. Roads wet. Windy (73 km/h). |
| Jan 7 | Light Drizzle | 6°C | 9°C | Continued light rain, 20% chance at any time. Windy (72 km/h). |
| Jan 8 | Clear | 2°C | 8°C | Dry, brief light rain possible (26% chance over 1 hour). Cool night. |
Trend Summary
After a dry and generally mild stretch through late December, conditions turn cooler around New Year’s Day. The most notable weather occurs on January 2, when light rain combines with freezing temperatures early in the morning, leading to a brief period of light snow at or near sea level. Accumulation is expected to be minimal—mainly a dusting on grass and elevated surfaces—with little to no impact on roads due to melting. This event is low in intensity but notable due to the rarity of snow in coastal northern Portugal.
From January 5 to 7, a shift to cooler, wetter, and windier conditions brings persistent light rain and gusty winds, with totals increasing through the period. While not heavy, the duration of rain may lead to damp conditions and minor ponding on poorly drained surfaces.
Temperatures remain near or just above freezing on several nights, especially Dec 26, Jan 1, and Jan 4, increasing frost potential. No strong warming or cooling trend is evident beyond day-to-day fluctuations—overall, the pattern remains stable with no extreme departures.
Note on uncertainty: Confidence is moderate through January 4. Beyond that, the timing and intensity of rain periods (Jan 5–7) are consistent across recent model runs, but exact start/end times may vary. Snow on Jan 2 is low-probability but cannot be ruled out based on wet-bulb temperatures and model output. Any snow will be brief and localized.
Practical advice:
- Jan 2: If traveling early, allow extra time—bridges and grassy areas may be briefly slippery.
- Jan 5–7: Keep rain gear handy; outdoor plans may need flexibility.
- Multiple nights: Protect sensitive plants from frost.
Experimental forecast - not official guidance