Castlebar weather in December (Mayo, Ireland)

What can you expect from the weather in Castlebar during December? This guide provides all the details you need.

In December, Castlebar generally has low temperatures and high rainfall. December is a winter month. Throughout the daytime, temperatures often hover around 9°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 4°C.

Castlebar in December usually receives high rainfall, averaging around 122 mm for the month. Since this is the rainiest month of the year, it's a good idea to carry an umbrella just in case. Rain is expected on roughly 23 days.

The city usually sees around 35 hours of sunlight, indicating fewer sunny days.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Castlebar. June typically offers the best circumstances. While January, February, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Castlebar climate page with graphs.

 

Castlebar, monthly averages in December

Min Temperature 4°C  

Max Temperature 9°C  

Chance of Rain 77%  

Precipitation 122 mm  

Rainy days 23 days  

Humidity 90% *  

Sunshine 35 hours *  

Percentage Sunshine 17% *  

* Data from: Claremorris, Ireland (25 KM, 16 Miles).

Where to go in Ireland in December

Find out more about the weather in Ireland in December and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Castlebar in December?

Wear a base layer in cold weather; this is the #1 thing you can do to increase your overall body temperature.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in December.

Swimming

4/10

Cycling

4/10

Walking

4/10

Camping

3/10

Outdoor sports

4/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Castlebar.

Our site offers climate and forecast data for every country in the world. Are you going to Ireland? On this website you can find historical weather averages for many cities in Ireland. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.