Belfast vs Charlestown: which is sunnier?
🇬🇧 United Kingdom vs 🇮🇪 Ireland · 188 km apart · long-term climate normals (NASA POWER, 2001–2020)
Charlestown is the sunnier overall: about 1,412 hours of sunshine a year to Belfast's 1,263. Belfast has the higher Sunshine Score in 6 of 12 months; the other 6 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Belfast | Charlestown | |
|---|---|---|
| Sunshine hours / year | 1,263 | 1,412 |
| Sunniest month | July (56/100) | July (50/100) |
| Nov–Feb average score | 2/100 | 1/100 |
| Jun–Aug average score | 54/100 | 48/100 |
| Rain / year | 1,068 mm | 1,289 mm |
| Peak midday UV | 4 (moderate) | 5 (moderate) |
Belfast vs Charlestown month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Belfast | Charlestown | Belfast | Charlestown | Belfast | Charlestown | |
| January | 0 | 0 | 6° | 6° | 93 | 123 |
| February | 0 | 0 | 7° | 6° | 74 | 96 |
| March | 0 | 0 | 8° | 8° | 76 | 92 |
| April | 19 | 18 | 11° | 11° | 62 | 76 |
| May | 36 | 29 | 14° | 13° | 77 | 93 |
| June | 52 | 45 | 17° | 16° | 90 | 100 |
| July | 56 | 50 | 18° | 17° | 99 | 111 |
| August | 55 | 48 | 18° | 17° | 106 | 120 |
| September | 47 | 40 | 16° | 15° | 82 | 99 |
| October | 27 | 22 | 13° | 12° | 109 | 119 |
| November | 6 | 5 | 9° | 9° | 105 | 131 |
| December | 0 | 0 | 7° | 7° | 95 | 129 |
The sunnier month by month: Jan even · Feb even · Mar even · Apr even · May Belfast · Jun Belfast · Jul Belfast · Aug Belfast · Sep Belfast · Oct Belfast · Nov even · Dec even.
When to pick which
- November–February: too close to call — Belfast averages 2/100, Charlestown 1/100. Daytime highs are similar (7°C vs 7°C). See the winter sun ranking.
- March–May: too close to call — Belfast averages 18/100, Charlestown 16/100. Daytime highs are similar (11°C vs 11°C).
- June–August: Belfast (average score 54/100 vs 48). Daytime highs are similar (18°C vs 17°C).
- September–October: Belfast (average score 37/100 vs 31). Daytime highs are similar (15°C vs 14°C).
Full month-by-month guides: Belfast weather by month · Charlestown weather by month · Best time to visit United Kingdom · Best time to visit Ireland.
More comparisons: Belfast vs Glasgow · Belfast vs Glasgow · Belfast vs Dublin · Charlestown vs Dublin · Charlestown vs Cork · Charlestown vs Shannon · all head-to-heads