EuroVelo 1 - Atlantic Coast Route - part France, stage 2: Rostrenen → Malestroit
On stage 2 (Rostrenen → Malestroit, 125 km) the best month is September: 81% of days were dry with highs of 10–30 °C, and riding Rostrenen → Malestroit meant an average tailwind of 2.3 km/h (ERA5 2006–2025, 9:00–18:00).
← EuroVelo 1 - Atlantic Coast Route - part France (Whole route)
Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 24% | 23% | 72 | 8 °C | 0% | 63% | 8.8 † |
| February | 39% | 24% | 63 | 9 °C | 0% | 49% | 10.1 † |
| March | 53% | 29% | 62 | 12 °C | 0% | 29% | 11.8 |
| April | 70% | 27% | 57 | 15 °C | 0% | 7% | 13.6 |
| May | 72% | 28% | 62 | 17 °C | 0% | 0% | 15.2 |
| June | 74% | 24% | 59 | 21 °C | 2% | 0% | 16.0 |
| July | 75% | 22% | 43 | 22 °C | 3% | 0% | 15.7 |
| August | 79% | 19% | 46 | 22 °C | 2% | 0% | 14.3 |
| September | 81% | 18% | 41 | 20 °C | 1% | 0% | 12.5 |
| October | 76% | 23% | 76 | 16 °C | 0% | 2% | 10.7 † |
| November | 57% | 26% | 76 | 12 °C | 0% | 21% | 9.2 † |
| December | 33% | 25% | 80 | 9 °C | 0% | 50% | 8.4 † |
Best months are all months within 3 percentage points of the best one. † less than 11 hours of daylight — long stages get tight.
Wind by month
| Month | Wind Rostrenen → Malestroit, km/h | Headwind > 15 km/h, Rostrenen → Malestroit | Headwind > 15 km/h, Malestroit → Rostrenen | Better way |
|---|---|---|---|---|
| January | +2.9 | 5% | 15% | Rostrenen → Malestroit |
| February | +2.6 | 7% | 16% | Rostrenen → Malestroit |
| March | +2.0 | 8% | 16% | either |
| April | +0.8 | 7% | 9% | either |
| May | +2.4 | 5% | 11% | Rostrenen → Malestroit |
| June | +2.6 | 3% | 9% | Rostrenen → Malestroit |
| July | +4.3 | 2% | 12% | Rostrenen → Malestroit |
| August | +4.3 | 2% | 11% | Rostrenen → Malestroit |
| September | +2.3 | 4% | 11% | Rostrenen → Malestroit |
| October | +0.7 | 7% | 10% | either |
| November | +2.6 | 6% | 14% | Rostrenen → Malestroit |
| December | +2.4 | 5% | 15% | Rostrenen → Malestroit |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 114–139 | E | +3.1 |
| 139–164 | SE | +1.2 |
| 164–189 | E | +3.1 |
| 189–215 | SE | +2.1 |
| 215–239 | SE | +2.0 |
Other stages
- Roscoff → Rostrenen 111 km
- Rostrenen → Malestroit 125 km
- Malestroit → Nantes 139 km
- Nantes → Pornic 108 km
- Pornic → Olonne-sur-Mer 124 km
- Olonne-sur-Mer → La Rochelle 125 km
- La Rochelle → Royan 135 km
- Royan → Andernos-les-Bains 133 km
- Andernos-les-Bains → Mimizan 117 km
- Mimizan → Irun 163 km
How to read the numbers
Wind is the 10 m wind of a 25-km grid cell, daytime hours 9:00–18:00 local solar time; at saddle height in a sheltered valley it is weaker, on a coast or ridge stronger. A positive value is a tailwind. ERA5 slightly over-counts days with ≥ 1 mm of rain (by about 5–7 percentage points) and underestimates daily highs by 1–2 °C. Good day = less than 1 mm of rain between 9:00 and 18:00 (riding hours, local solar time) and a high between 10 and 30 °C; rain at night or in the evening does not spoil it.