Bilbao vs Biarritz: which is sunnier?
🇪🇸 Spain vs 🇫🇷 France · 114 km apart · long-term climate normals (NASA POWER, 2001–2020)
Biarritz is the sunnier overall: about 2,077 hours of sunshine a year to Bilbao's 1,988. Bilbao has the higher Sunshine Score in 6 of 12 months, Biarritz in 2 (4 within 2 points).
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Bilbao | Biarritz | |
|---|---|---|
| Sunshine hours / year | 1,988 | 2,077 |
| Sunniest month | July (84/100) | July (82/100) |
| Nov–Feb average score | 28/100 | 22/100 |
| Jun–Aug average score | 83/100 | 80/100 |
| Rain / year | 1,003 mm | 1,069 mm |
| Warmest sea | 22°C / 72°F | 24°C / 75°F |
| Peak midday UV | 7 (high) | 7 (high) |
Bilbao vs Biarritz month by month
| Month | Sunshine Score | Day high °C | Rain mm | Sea °C | ||||
|---|---|---|---|---|---|---|---|---|
| Bilbao | Biarritz | Bilbao | Biarritz | Bilbao | Biarritz | Bilbao | Biarritz | |
| January | 22 | 17 | 12° | 11° | 126 | 121 | 14° | 13° |
| February | 24 | 19 | 12° | 11° | 98 | 90 | 14° | 13° |
| March | 37 | 37 | 14° | 14° | 94 | 89 | 14° | 13° |
| April | 44 | 56 | 15° | 17° | 80 | 89 | 15° | 15° |
| May | 65 | 75 | 18° | 20° | 64 | 89 | 16° | 17° |
| June | 80 | 77 | 21° | 24° | 56 | 73 | 19° | 20° |
| July | 84 | 82 | 23° | 26° | 35 | 51 | 21° | 23° |
| August | 84 | 81 | 24° | 27° | 36 | 53 | 22° | 24° |
| September | 81 | 79 | 22° | 25° | 53 | 65 | 21° | 22° |
| October | 73 | 74 | 20° | 20° | 95 | 93 | 19° | 19° |
| November | 37 | 32 | 15° | 14° | 146 | 144 | 17° | 17° |
| December | 28 | 18 | 13° | 11° | 120 | 112 | 15° | 14° |
The sunnier month by month: Jan Bilbao · Feb Bilbao · Mar even · Apr Biarritz · May Biarritz · Jun Bilbao · Jul even · Aug Bilbao · Sep even · Oct even · Nov Bilbao · Dec Bilbao.
When to pick which
- November–February: Bilbao (average score 28/100 vs 22). Daytime highs are similar (13°C vs 12°C). See the winter sun ranking.
- March–May: Biarritz (average score 56/100 vs 49). Daytime highs are similar (16°C vs 17°C).
- June–August: Bilbao (average score 83/100 vs 80). Biarritz is the warmer, around 26°C daytime highs vs 23°C.
- September–October: too close to call — Bilbao averages 77/100, Biarritz 77/100. Biarritz is the warmer, around 23°C daytime highs vs 21°C.
Sea temperature
Biarritz's sea gets warmer: 24°C / 75°F at its peak vs 22°C. Swimmable water (21°C+): Bilbao about 3 months a year, Biarritz about 3 months a year. Month-by-month sea temperatures are in the table above.
Full month-by-month guides: Bilbao weather by month · Biarritz weather by month · Best time to visit Spain · Best time to visit France.
More comparisons: Bilbao vs San Sebastián · Bilbao vs Vitoria-Gasteiz · Bilbao vs Santander · Biarritz vs Bordeaux · Biarritz vs San Sebastián · Biarritz vs Pau/Pyrénées (Uzein) · all head-to-heads