Climate averages 1991–2020
Lisburn weather
by month.
See how the year changes. July has the highest average daily maximum; March has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year Lisburn averages a daytime high of 12.1°C and a nighttime low of 7.1°C, with about 896 mm of rain on roughly 162 days. July is the warmest month (average high 17.7°C) and January the coolest (7.1°C). October is the wettest month with 86 mm; March is the driest with 62 mm.
The annual picture
A year in Lisburn
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Lisburn climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.1°C3.2°C | 3.2°C | 77 | 14.2 | 7.98 h |
| February | 7.5°C3.0°C | 3.0°C | 63 | 12.2 | 9.710 h |
| March | 9.0°C3.7°C | 3.7°C | 62 | 13.4 | 11.812 h |
| April | 11.0°C5.3°C | 5.3°C | 65 | 13.0 | 14.014 h |
| May | 13.8°C7.7°C | 7.7°C | 70 | 14.1 | 16.016 h |
| June | 16.2°C10.4°C | 10.4°C | 75 | 13.2 | 17.217 h |
| July | 17.7°C12.1°C | 12.1°C | 81 | 14.6 | 16.717 h |
| August | 17.4°C12.1°C | 12.1°C | 81 | 14.2 | 14.915 h |
| September | 15.6°C10.6°C | 10.6°C | 70 | 12.5 | 12.813 h |
| October | 12.5°C8.3°C | 8.3°C | 86 | 13.5 | 10.611 h |
| November | 9.4°C5.6°C | 5.6°C | 85 | 14.0 | 8.59 h |
| December | 7.5°C3.6°C | 3.6°C | 82 | 13.5 | 7.47 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- BelfastUnited Kingdom · 11 kmHigh 12.1°C · Low 7.8°C · 896 mm rain a year
- DerryUnited Kingdom · 97 kmHigh 11.9°C · Low 7.0°C · 1,007 mm rain a year
- DouglasIsle of Man · 109 kmHigh 11.5°C · Low 9.3°C · 1,007 mm rain a year
- DublinIreland · 133 kmHigh 12.9°C · Low 7.6°C · 853 mm rain a year
- TallaghtIreland · 139 kmHigh 12.5°C · Low 7.1°C · 853 mm rain a year
- PaisleyUnited Kingdom · 178 kmHigh 11.5°C · Low 5.8°C · 1,211 mm rain a year
- East KilbrideUnited Kingdom · 182 kmHigh 10.8°C · Low 4.9°C · 1,147 mm rain a year
- GlasgowUnited Kingdom · 187 kmHigh 11.3°C · Low 5.6°C · 1,147 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC±0, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 54.50°, -6.00° (4 km from the city centre), adjusted up by 0.4°C for the difference between the city's elevation (53 m) and the cell's (112 m). Rain comes from the 0.25° cell at 54.50°, -6.00°. Belfast lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.