When planning a visit to County Antrim in Ireland, it helps to know that temperatures typically range from 8°C (46°F) in January up to 19°C (66°F) during the peak of July. Our detailed climate overview is based on data from Lisburn, the region's most well-known city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
In County Antrim, the months of July and August bring pleasant weather, with average temperatures ranging between 19°C (66°F) and 19°C (66°F).
The cooler season is during the months of January, February and December.
When it comes to rainfall, County Antrim maintains fairly consistent rainfall patterns throughout the year, with October seeing 92 mm (3.6 in) and March receiving 69 mm (2.7 in).
Visitors hoping to maximize their time in the sun should consider planning their trip for May, when daylight hours are at their peak.
