Siero Weather in December
Siero in December sees moderate temperatures, with highs around 13°C (55°F) and overnight lows of 5°C (41°F). Rainfall is fairly high at around 118 mm (4.6 in) on average, so pack waterproofs just in case.
Rainfall in Siero in December
Analyzing past climate data, one can expect approximately 17 days of rain, averaging 118 mm (4.6 in). Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Siero in December
Daytime temperatures in Siero reach 13°C (55°F) in December, dropping to 5°C (41°F) at night. This month falls in the winter season. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 5°C (41°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Siero in December
The area enjoys a moderate level of sunlight, with around 105 hours. It's a good balance between sunny and cloudy days.If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Siero. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Spain, check out our Siero's climate page.
Siero Temperature in December
Min Temperature
5°C (41°F)
Max Temperature
13°C (55°F)
Chance of Rain
57%
Precipitation
118 mm (4.6 in)
Rainy days
17 days
Humidity
77% *
Sunshine
105 hours *
Percentage Sunshine
*
Best Places in Spain in December
Find out more about the weather in Spain and which places have the best travel conditions in this month. See all of Spain in December →
perfect weather
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tolerable
unpleasant
poor
What to Wear in Siero in December
The weather can swing between comfortable and chilly in December, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Siero in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Spain, check out our Siero's climate page.
Temperature Rainfall Sunshine Humidity
See the full Siero climate overview or explore weather in Spain.
