Greenock weather in December 2025

Expect 6°C daytime maximum temperatures in the shade with on average 1 hour of sunshine per day in Greenock in December based on long-term weather averages. There is usually 21 days with some rainfall and 220 mm of average monthly rainfall in December.

  • 6°C maximum daytime temperature in December in Greenock6
    6°C max day temperature
  • 1 hour of sunshine per day
  • 21 days with some rainfall in December in Greenock21
    21 days with some rainfall
  • 1°C minimum night-time temperature in December in Greenock1
    1°C min night temperature
  • 7 hours of daylight per day in December in Greenock7
    7 hours of daylight per day
  • No heat & humidity in December in Greenock0
    No heat & humidity
  • 220 mm monthly rainfall in December in Greenock220
    220 mm of monthly rainfall
  • No UV (maximum) index in December in Greenock0
    No UV (Maximum) Index UV index
  • 9°C sea temperature in December in Greenock9
    9°C sea temperature

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The December weather guide for Scotland (Greenock) 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 Scotland

How cold is it in Greenock in December?

Daytime temperatures usually reach 6°C in Greenock in December, falling to 1°C at night.

How sunny is it in Greenock in December?

There are normally 1 hour of bright sunshine each day in Greenock in December - that's 14% of daylight hours.

Is the sea cold around Greenock in December?

The average sea temperature around Greenock in December is 9°C.

Does it rain in Greenock in December?

There are usually 21 days with some rain in Greenock in December and the average monthly rainfall is 220mm.

Greenock December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 08:26 15:50
Tuesday, 16th December 2025 08:45 15:45
Wednesday, 31st December 2025 08:50 15:54

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