The Alto Tajo month by month
The Alto Tajo in December: truffles, Geminids and winter silence
December brings the shortest daylight, valley fog, sharp freezes, and the start of the black truffle season to the Alto Tajo. Mid-month sees the Geminids, one of the year's premier meteor showers, arching across deep, dark winter skies.
- Black truffle
- Geminids
- Frost and valley fog
- Winter solstice
- Few visitors
- Avg. max (°C)
- 9 °C
- Avg. min (°C)
- 1 °C
- Rainfall (mm)
- 43 mm
- Frost days
- 12
Average of 110 atlas villages (ERA5, 2015–2024). The coldest in december is Torremocha del Pinar (0 °C average minimum) and the mildest, Trillo (12 °C average maximum).
Truffles
The black truffle season gets underway in the holm and gall oak woodlands around Molina. An ideal time to learn about the craft of the truffle hunter and their trained dog.
Landscape
Morning valley mists lift to reveal cliffs and pine ridges bathed in low winter sunlight. On temperature inversion days, the high parameras can feel warmer than the sheltered valley floors.
Wildlife
Tracks are easy to read in mud and frost. Griffon vultures and other resident raptors remain active during sunny midday spells.
Practical tips
Watch for early morning road ice and drive with care. With limited daylight, favor shorter trails or cultural visits to historical towns.
The night sky in december
The Geminids peak around 13–14 December, producing dozens of bright meteors per hour. Nights of nearly fifteen hours provide ideal conditions for telescope observation, provided you wrap up warmly.
Traces of time in this season
The season changes how you see these places. Their stories belong to other scales of time: from the formation of the landscape to the work and lives of those who inhabited it.
Molina de Aragón
Guadalajara · 13 places
Regional Museum of Molina de Aragón (San Francisco Convent)
Molina de Aragón
Checa
Guadalajara · 25 placesTo visit: Prioritize heritage and villages; check for ice before driving. Confirm opening hours and wear warm layers even for short outings.
Check the conditions on each guide or start with the getting started guide.
- Castles and fortresses
- Heritage: chapels, bridges and saltworks
- Dark skies and stargazing
- Today's conditions
Preguntas frecuentes
When is the black truffle season in the Alto Tajo?
Black truffles (Tuber melanosporum) mature through winter. Harvesting typically runs from December through March in accordance with regional regulations.
When can you see the Geminids?
The peak occurs around 13–14 December. From the dark skies of the Alto Tajo, away from city lights, it is among the finest meteor displays of the entire year.