Shannon Weather in December

Shannon in December sees low daytime temperatures of 10°C (50°F) and nighttime lows of 4°C (39°F). With the highest rainfall of the year it is wise to pack an umbrella and expect frequent showers.

Rainfall in Shannon in December

With this being the rainiest month, having an umbrella is essential to avoid unexpected rain. Based on our climate data of the past 30 years, about 21 days of rain are anticipated, with 111 mm (4.4 in) on average. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.

Temperature in Shannon in December

December in Shannon sees highs of 10°C (50°F) and lows of 4°C (39°F) overnight. During December, you'll experience the winter season. Cold conditions persist throughout the day, so warm clothing is important from the moment you head outside. With lows around 4°C (39°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Shannon in December

With limited sunshine this month, there are about 45 hours of sun. It's ideal for those who prefer a cooler, cloudier climate.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Shannon. Our weather planner can help you explore destinations with more pleasant weather conditions.