Terceira weather in December 2025

Expect 15°C daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Terceira in December based on long-term weather averages. There is usually 18 days with some rainfall and 119 mm of average monthly rainfall in December.

  • 15°C maximum daytime temperature in December in Terceira15
    15°C max day temperature
  • 3 hours of sunshine per day
  • 18 days with some rainfall in December in Terceira18
    18 days with some rainfall
  • 11°C minimum night-time temperature in December in Terceira11
    11°C min night temperature
  • 10 hours of daylight per day in December in Terceira10
    10 hours of daylight per day
  • No heat & humidity in December in Terceira0
    No heat & humidity
  • 119 mm monthly rainfall in December in Terceira119
    119 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Terceira2
    2 (Low) UV index
  • 17°C sea temperature in December in Terceira17
    17°C sea temperature

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The December weather guide for Azores (Terceira) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Portugal

How warm is it in Terceira in December?

Daytime temperatures usually reach 15°C in Terceira in December, falling to 11°C at night.

How sunny is it in Terceira in December?

There are normally 3 hours of bright sunshine each day in Terceira in December - that's 33% of daylight hours.

How warm is the sea around Terceira in December?

The average sea temperature around Terceira in December is 17°C.

Does it rain in Terceira in December?

There are usually 18 days with some rain in Terceira in December and the average monthly rainfall is 119mm.

Terceira December sunrise & sunset times

Browse the sunrise and sunset times for Terceira in December 2025. Select a month to view Terceira sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:48 17:28
Tuesday, 16th December 2025 08:00 17:29
Wednesday, 31st December 2025 08:07 17:38

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