EuroVelo 1 - Atlantic Coast Route - part France, stage 8: Royan → Andernos-les-Bains

On stage 8 (Royan → Andernos-les-Bains, 133 km) the best month is October: 78% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.2 km/h on average; ERA5 2006–2025, 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

← EuroVelo 1 - Atlantic Coast Route - part France (Whole route)

133 kmLength

April–May, September–October (peak October)Best months

eitherBetter direction in the best month

0.2 km/hAverage tailwind in the best month

78%Dry days with 10–30 °C

July · 73%Best summer month

Start: Royan · Finish: Andernos-les-Bains · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

Good days

Month	Good days	Rain days ≥ 1 mm	Rain, mm	Avg high	Days ≥ 30 °C	Days < 10 °C	Daylight, h
January	38%	24%	80	10 °C	0%	44%	9.1 †
February	55%	21%	62	12 °C	0%	28%	10.3 †
March	68%	24%	63	14 °C	0%	10%	11.8
April	76%	23%	58	18 °C	0%	1%	13.4
May	76%	23%	71	20 °C	1%	0%	14.8
June	71%	19%	66	24 °C	10%	0%	15.6
July	73%	9%	35	26 °C	18%	0%	15.3
August	72%	12%	43	26 °C	17%	0%	14.1
September	76%	17%	53	24 °C	7%	0%	12.5
October	78%	22%	73	20 °C	1%	0%	10.9 †
November	63%	28%	88	14 °C	0%	11%	9.4 †
December	44%	25%	80	11 °C	0%	34%	8.8 †

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

Wind Royan → Andernos-les-Bains, km/h

Month	Wind Royan → Andernos-les-Bains, km/h	Headwind > 15 km/h, Royan → Andernos-les-Bains	Headwind > 15 km/h, Andernos-les-Bains → Royan	Better way
January	−0.4	8%	6%	either
February	+0.2	8%	9%	either
March	+1.0	6%	9%	either
April	+2.3	4%	7%	Royan → Andernos-les-Bains
May	+2.9	2%	6%	Royan → Andernos-les-Bains
June	+2.7	2%	3%	Royan → Andernos-les-Bains
July	+3.5	1%	2%	Royan → Andernos-les-Bains
August	+3.3	1%	2%	Royan → Andernos-les-Bains
September	+2.6	2%	4%	Royan → Andernos-les-Bains
October	−0.2	7%	4%	either
November	−0.9	8%	7%	either
December	−1.6	9%	5%	either

Along the route (sections of about 25 km)

km	Heading	Tailwind in October, km/h
866–891	S	−0.7
891–917	S	−0.5
917–943	S	−0.4
943–968	S	−0.2
968–994	S	+0.5
994–998	SE	+1.2

Other stages

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.