Ballycastle weather
Our guide to the weather in Ballycastle during September
We've looked at the most up-to-date weather data for Ballycastle, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Ballycastle weather in September.
What's the temperature like in Ballycastle during September?
The temperature is extremely stable in September with average highs of 15℃ and lows just 4℃ lower at 11℃. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.
Does it rain in Ballycastle during September?
On average, there will be 10 rainy days during the month, amounting to 133.3mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. You're not likely to see a thunderstorm during your trip.
Is it windy in Ballycastle during September?
Expect moderate breeze becoming stronger at times during September, with occasional gusts up to 21mph. With moderate air temperatures, any breeze will feel cool.
Weather in Ballycastle
Our month-by-month guide to the weather and climate in Ballycastle
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