Dublin vs Belfast: which is sunnier?
🇮🇪 Ireland vs 🇬🇧 United Kingdom · 137 km apart · long-term climate normals (NASA POWER, 2001–2020)
Dublin is the sunnier overall: about 1,488 hours of sunshine a year to Belfast's 1,263. Dublin has the higher Sunshine Score in 4 of 12 months, Belfast in 1 (7 within 2 points).
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Dublin | Belfast | |
|---|---|---|
| Sunshine hours / year | 1,488 | 1,263 |
| Sunniest month | July (60/100) | July (56/100) |
| Nov–Feb average score | 3/100 | 2/100 |
| Jun–Aug average score | 56/100 | 54/100 |
| Rain / year | 982 mm | 1,068 mm |
| Peak midday UV | 5 (moderate) | 4 (moderate) |
Dublin vs Belfast month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Dublin | Belfast | Dublin | Belfast | Dublin | Belfast | |
| January | 0 | 0 | 7° | 6° | 86 | 93 |
| February | 0 | 0 | 7° | 7° | 70 | 74 |
| March | 6 | 0 | 9° | 8° | 70 | 76 |
| April | 19 | 19 | 11° | 11° | 61 | 62 |
| May | 37 | 36 | 14° | 14° | 67 | 77 |
| June | 49 | 52 | 16° | 17° | 76 | 90 |
| July | 60 | 56 | 18° | 18° | 80 | 99 |
| August | 59 | 55 | 18° | 18° | 91 | 106 |
| September | 49 | 47 | 16° | 16° | 76 | 82 |
| October | 28 | 27 | 13° | 13° | 102 | 109 |
| November | 11 | 6 | 10° | 9° | 106 | 105 |
| December | 0 | 0 | 8° | 7° | 97 | 95 |
The sunnier month by month: Jan even · Feb even · Mar Dublin · Apr even · May even · Jun Belfast · Jul Dublin · Aug Dublin · Sep even · Oct even · Nov Dublin · Dec even.
When to pick which
- November–February: too close to call — Dublin averages 3/100, Belfast 2/100. Daytime highs are similar (8°C vs 7°C). See the winter sun ranking.
- March–May: Dublin (average score 21/100 vs 18). Daytime highs are similar (11°C vs 11°C).
- June–August: too close to call — Dublin averages 56/100, Belfast 54/100. Daytime highs are similar (17°C vs 18°C).
- September–October: too close to call — Dublin averages 39/100, Belfast 37/100. Daytime highs are similar (15°C vs 15°C).
Full month-by-month guides: Dublin weather by month · Belfast weather by month · Best time to visit Ireland · Best time to visit United Kingdom.
More comparisons: Dublin vs Cork · Dublin vs Shannon · Dublin vs Castletown · Belfast vs Glasgow · Belfast vs Glasgow · Belfast vs Castletown · all head-to-heads