Climate averages 1991–2020
Belfast weather
in March.
A cool, moderately wet month: the 9th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cool month in Belfast: daytime highs average 9.1°C and nights cool to about 4.4°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 62 mm of rain on roughly 13 days, which makes March a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 49 min on an average March day.
The nearest other city in this atlas is Lisburn (11 km away). In March its highs average 9.0°C, about as warm as Belfast, with 62 mm of rain.
Among the 143 cities listed in the United Kingdom, Belfast ranks joint 108th of 143 for the warmest March highs and joint 114th of 143 for the driest March (rainfall, lowest first). The mean March high of those 143 cities is 9.5°C; Belfast is 0.5°C cooler than that mean.
From March to April, average highs rise by 1.9°C to 10.9°C, and monthly rainfall rises from 62 mm to 65 mm.
The annual picture
March in context
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
Belfast climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.5°C3.9°C | 3.9°C | 77 | 14.2 | 7.98 h |
| February | 7.7°C3.8°C | 3.8°C | 63 | 12.2 | 9.710 h |
| March, selected | 9.1°C4.4°C | 4.4°C | 62 | 13.4 | 11.812 h |
| April | 10.9°C5.9°C | 5.9°C | 65 | 13.0 | 14.014 h |
| May | 13.6°C8.2°C | 8.2°C | 70 | 14.1 | 16.016 h |
| June | 15.9°C10.9°C | 10.9°C | 75 | 13.2 | 17.217 h |
| July | 17.4°C12.5°C | 12.5°C | 81 | 14.6 | 16.717 h |
| August | 17.3°C12.6°C | 12.6°C | 81 | 14.2 | 14.915 h |
| September | 15.7°C11.3°C | 11.3°C | 70 | 12.5 | 12.813 h |
| October | 12.8°C9.0°C | 9.0°C | 86 | 13.5 | 10.611 h |
| November | 9.8°C6.4°C | 6.4°C | 85 | 14.0 | 8.59 h |
| December | 7.9°C4.4°C | 4.4°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
March in nearby cities
- Lisburn in MarchUnited Kingdom · 11 kmHigh 9.0°C · Low 3.7°C · 62 mm rain
- Derry in MarchUnited Kingdom · 99 kmHigh 9.0°C · Low 3.7°C · 75 mm rain
- Douglas in MarchIsle of Man · 106 kmHigh 8.1°C · Low 5.8°C · 70 mm rain
- Dublin in MarchIreland · 142 kmHigh 9.8°C · Low 4.1°C · 59 mm rain
- Tallaght in MarchIreland · 149 kmHigh 9.4°C · Low 3.6°C · 59 mm rain
- Paisley in MarchUnited Kingdom · 167 kmHigh 8.2°C · Low 2.4°C · 92 mm rain
- East Kilbride in MarchUnited Kingdom · 171 kmHigh 7.5°C · Low 1.5°C · 87 mm rain
- Glasgow in MarchUnited Kingdom · 176 kmHigh 8.1°C · Low 2.1°C · 87 mm rain
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 limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Belfast) is explained once on the Belfast year overview and on the Sources, method and limits page.
Lisburn lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.