Westport Weather in December
December in Westport brings low temperatures, with highs of 9°C (48°F) and nights dropping to 4°C (39°F). It's the rainiest month of the year, so come prepared with waterproof gear.
Rainfall in Westport in December
This month sees the most rain, so carrying an umbrella will ensure you stay dry. Historically, approximately 24 days this month are expected to have rain, averaging 133 mm (5.2 in). Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Westport in December
Daytime highs in Westport in December reach 9°C (48°F), with nights around 4°C (39°F). Experience the winter season in December. Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. Nights fall to 4°C (39°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Westport in December
The area experiences limited sunny days, amounting to roughly 35 hours of sunshine. This makes it perfect for those who lean towards cooler, cloudier settings rather than intense sunlit days.If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Westport. 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 Ireland, check out our Westport's climate page.
Westport Temperature in December
Min Temperature
4°C (39°F)
Max Temperature
9°C (48°F)
Chance of Rain
78%
Precipitation
133 mm (5.2 in)
Rainy days
24 days
Humidity
90% *
Sunshine
35 hours *
Percentage Sunshine
17% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Westport typically stay consistent throughout December, with daily highs averaging around 9°C (48°F). Nights are cold, with lows around 4°C (39°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Westport in December
Browse day-by-day weather records for Westport spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Westport historical weather extremes in December
Based on weather observations in Westport between 1976 and 2025, these are the recorded extremes during December.
- Westport recorded its highest December temperature of 14°C (57°F) on December 9, 2025.
- The coldest December day was on December 20, 2010, with a maximum of -3°C (27°F).
- Westport registered its coldest December night on December 24, 2010, with temperatures dropping to -11°C (12°F).
- The heaviest December precipitation occurred on December 5, 2015, when 62 mm (2.4 in) of precipitation fell.
Best Places in Ireland in December
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Westport in December
We recommend to layer up for chilly conditions in Westport in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Westport 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 Ireland, check out our Westport's climate page.
Temperature Rainfall Sunshine Humidity
See the full Westport climate overview or explore weather in Ireland.
