Northern Ireland climate by month
8-year averages · when to visit| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Belfast | 7° | 8° | 9° | 12° | 15° | 17° | 19° | 18° | 16° | 13° | 10° | 8° |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Belfast | 12 | 14 | 16 | 13 | 14 | 15 | 17 | 18 | 15 | 16 | 15 | 15 |
Figures are averaged over 8 years of ERA5 reanalysis; sea temps come from ocean reanalysis, and UV is derived from solar elevation.
Belfast climate in May
8-year averages · when to visit
| April | May | June | |
|---|---|---|---|
| Average temperature | ▲ 8°C | 11°C | ▲ 14°C |
| Typical high | ▲ 12°C | 15°C | ▲ 17°C |
| Typical low | ▲ 5°C | 8°C | ▲ 11°C |
| Precipitation | → 69 mm | 69 mm | ▲ 86 mm |
| Wet days | ▲ 13 d | 14 d | ▲ 15 d |
| Humidity | ▼ 80% | 78% | → 78% |
| Sunshine per day | ▲ 9.1 h | 10.6 h | ▲ 11.0 h |
| Cloud cover | ▼ 36% | 34% | ▲ 36% |
| Midday UV | ▲ 6 | 8 | ▲ 9 |
| Daylight | 14:07 | 16:06 | 17:10 |
| Our take | Acceptable | Acceptable | Acceptable |
May temperatures day by day daily mean + smoothed trend · °C
May precipitation day by day mm
May UV day by day clear-sky midday value
Figures are averaged over 8 years of ERA5 reanalysis; sea temps come from ocean reanalysis, and UV is derived from solar elevation.
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NBM + global weather models
Updated: 10:58 AM
Northern Ireland, United Kingdom · 7 weather points · Climate reference: Belfast (54.60°N, 5.93°W) · Europe/London