The weather in Northern Ireland on friday 18 July 2025
The average max temperature in Northern Ireland on 18 July is normally around 21°C. For comparison, the highest daytime temperature in the past 10 years was 29°C in 2022, while the lowest was 15°C in 2023.
There’s a small chance of precipitation, as 4 of the past 10 years saw precipitation on this day, averaging 4,1 mm.The wind often comes from the Southeast with a maximum speed of 4 Bft.The UV index can reach 6.
Temperature on 18 July in Northern Ireland per year
This chart shows the average temperature on 18 July in Northern Ireland, measured in degrees Celsius, over the past years.
Precipitation on 18 July in Northern Ireland over the past years
This chart shows the total measured precipitation in millimeters on 18 July in Northern Ireland over the past years.
Average Weather in Northern Ireland by Month
Click on a month below to see detailed weather info for Northern Ireland. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Northern Ireland for all months at once