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Ballycastle Climate by Month

The weather in Ballycastle sees moderate temperature fluctuations over the course of a year. Temperatures can be mild at the high end to roughly cold at the low end. It is also known for its large amounts of rainfall. Now, let’s break down all the climate details for a clearer picture.

Average day and night temperature

The weather in Ballycastle changes moderately throughout the year, offering enough variation to appreciate each season. Typically, daytime temperatures range from a moderate 18°C in August to a chilly 10°C in the coolest month, February. Nights are cooler, with temperatures generally dropping to 5°C, particularly during the colder months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Ballycastle experiences significant rainfall throughout the year, averaging 1479 mm of precipitation annually. Precipitation levels in Ballycastle remain relatively steady throughout the year. November has the most rain, with 155 mm over 24 days. In May, this drops slightly to 98 mm, making the city's climate fairly predictable.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

For those who appreciate different seasons, Ballycastle serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 6.4 hours of sunshine daily, and embrace the darker days in December, offering only 1.3 hours of daily sunlight.

Monthly hours of sunshine

Data from: Belmullet, Ireland (41 KM, 25 Miles).

Daily hours of sunshine

Data from: Belmullet, Ireland (41 KM, 25 Miles).

The best time of year to visit Ballycastle in Ireland

Other facts from our historical weather data:
  • Which months have the greatest rainfall in Ballycastle?
    Most rainfall (rainy season) is seen in November and December.
  • Which is the warmest month in Ballycastle?
    August has an average maximum temperature of 18°C and is the warmest month of the year.
  • Which is the coldest month in Ballycastle?
    The coldest month is February with an average maximum temperature of 10°C.
  • Which is the wettest month in Ballycastle?
    November tops the wettest month list with 155 mm of rainfall.
  • Which is the driest month in Ballycastle?
    May is the driest month with 98 mm of precipitation.
  • Which is the sunniest month in Ballycastle?
    May is the sunniest month with an average of 193 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Ballycastle

    Thu   Dec 12
    3°C | -1°C
    S 7 km/h
    broken clouds and no rain

    broken clouds and no rain

    Fri   Dec 13
    7°C | 1°C
    NW 14 km/h
    0.7 mm
    broken clouds and  chance of slight rain

    broken clouds and chance of slight rain

    Sat   Dec 14
    10°C | 3°C
    W 22 km/h
    3.9 mm
    overcast and rain

    overcast and rain