Brussels vs Lille: which is sunnier?
🇧🇪 Belgium vs 🇫🇷 France · 104 km apart · long-term climate normals (NASA POWER, 2001–2020)
Lille is the sunnier overall: about 1,703 hours of sunshine a year to Brussels's 1,609. Month by month it's balanced: each has the higher Sunshine Score in 1 month, with 10 within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.

At a glance
| Brussels | Lille | |
|---|---|---|
| Sunshine hours / year | 1,609 | 1,703 |
| Sunniest month | September (78/100) | September (79/100) |
| Nov–Feb average score | 3/100 | 3/100 |
| Jun–Aug average score | 74/100 | 76/100 |
| Rain / year | 763 mm | 731 mm |
| Peak midday UV | 5 (moderate) | 5 (moderate) |
Brussels vs Lille month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Brussels | Lille | Brussels | Lille | Brussels | Lille | |
| January | 0 | 0 | 5° | 6° | 69 | 60 |
| February | 0 | 0 | 6° | 7° | 60 | 55 |
| March | 13 | 20 | 10° | 11° | 55 | 53 |
| April | 47 | 47 | 15° | 15° | 38 | 41 |
| May | 71 | 65 | 19° | 18° | 59 | 59 |
| June | 76 | 77 | 22° | 21° | 63 | 61 |
| July | 74 | 76 | 24° | 23° | 75 | 68 |
| August | 73 | 75 | 23° | 23° | 79 | 73 |
| September | 78 | 79 | 20° | 20° | 55 | 52 |
| October | 45 | 45 | 15° | 15° | 63 | 65 |
| November | 13 | 13 | 10° | 10° | 69 | 71 |
| December | 0 | 0 | 6° | 6° | 78 | 73 |
The sunnier month by month: Jan even · Feb even · Mar Lille · Apr even · May Brussels · Jun even · Jul even · Aug even · Sep even · Oct even · Nov even · Dec even.
When to pick which
- November–February: too close to call — Brussels averages 3/100, Lille 3/100. Daytime highs are similar (7°C vs 7°C). See the winter sun ranking.
- March–May: too close to call — Brussels averages 44/100, Lille 44/100. Daytime highs are similar (15°C vs 15°C).
- June–August: too close to call — Brussels averages 74/100, Lille 76/100. Daytime highs are similar (23°C vs 22°C).
- September–October: too close to call — Brussels averages 62/100, Lille 62/100. Daytime highs are similar (18°C vs 18°C).
Full month-by-month guides: Brussels weather by month · Lille weather by month · Best time to visit France.
More comparisons: Brussels vs Rotterdam · Brussels vs Eindhoven · Brussels vs Ostend · Lille vs Paris (Roissy-en-France, Val-d'Oise) · Lille vs Ostend · all head-to-heads