Vienna vs Bratislava: which is sunnier?
🇦🇹 Austria vs 🇸🇰 Slovakia · 48 km apart · long-term climate normals (NASA POWER, 2001–2020)
Vienna and Bratislava are virtually tied for annual sunshine — about 1,794 vs 1,795 hours a year. Bratislava has the higher Sunshine Score in 1 of 12 months; the other 11 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Vienna | Bratislava | |
|---|---|---|
| Sunshine hours / year | 1,794 | 1,795 |
| Sunniest month | May (76/100) | September (78/100) |
| Nov–Feb average score | 2/100 | 2/100 |
| Jun–Aug average score | 76/100 | 77/100 |
| Rain / year | 636 mm | 606 mm |
| Peak midday UV | 6 (high) | 5 (moderate) |
Vienna vs Bratislava month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Vienna | Bratislava | Vienna | Bratislava | Vienna | Bratislava | |
| January | 0 | 0 | 2° | 2° | 40 | 42 |
| February | 0 | 0 | 5° | 5° | 36 | 37 |
| March | 14 | 14 | 10° | 10° | 41 | 40 |
| April | 62 | 62 | 17° | 17° | 35 | 34 |
| May | 76 | 77 | 21° | 22° | 71 | 65 |
| June | 76 | 77 | 26° | 26° | 73 | 65 |
| July | 76 | 77 | 29° | 29° | 69 | 63 |
| August | 76 | 77 | 28° | 28° | 69 | 63 |
| September | 76 | 78 | 22° | 23° | 69 | 62 |
| October | 47 | 53 | 15° | 16° | 49 | 49 |
| November | 7 | 7 | 9° | 9° | 43 | 44 |
| December | 0 | 0 | 3° | 3° | 41 | 42 |
The sunnier month by month: Jan even · Feb even · Mar even · Apr even · May even · Jun even · Jul even · Aug even · Sep even · Oct Bratislava · Nov even · Dec even.
When to pick which
- November–February: too close to call — Vienna averages 2/100, Bratislava 2/100. Daytime highs are similar (5°C vs 5°C). See the winter sun ranking.
- March–May: too close to call — Vienna averages 51/100, Bratislava 51/100. Daytime highs are similar (16°C vs 16°C).
- June–August: too close to call — Vienna averages 76/100, Bratislava 77/100. Daytime highs are similar (28°C vs 28°C).
- September–October: Bratislava (average score 66/100 vs 62). Daytime highs are similar (19°C vs 20°C).
Full month-by-month guides: Vienna weather by month · Bratislava weather by month · Best time to visit Austria.
More comparisons: Vienna vs Brno · Vienna vs Graz · Bratislava vs Budapest · Bratislava vs Brno · all head-to-heads