Ciclovia Svizzera-Mare: which way and when to ride
The best month for Ciclovia Svizzera-Mare is October: 78% of days were dry with highs of 10–30 °C. In October, riding Grinzane Cavour → Ventimiglia meant an average tailwind of 2.0 km/h (ERA5 2006–2025, daytime 9:00–18:00).
Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 24% | 15% | 81 | 7 °C | 0% | 75% | 9.2 † |
| February | 36% | 18% | 78 | 8 °C | 0% | 63% | 10.4 † |
| March | 59% | 24% | 105 | 11 °C | 0% | 35% | 11.8 |
| April | 65% | 34% | 105 | 15 °C | 0% | 8% | 13.4 |
| May | 60% | 40% | 116 | 18 °C | 0% | 1% | 14.8 |
| June | 60% | 38% | 91 | 22 °C | 2% | 0% | 15.5 |
| July | 59% | 37% | 69 | 25 °C | 6% | 0% | 15.2 |
| August | 62% | 32% | 71 | 25 °C | 6% | 0% | 14.0 |
| September | 72% | 27% | 85 | 21 °C | 0% | 0% | 12.4 |
| October | 78% | 21% | 109 | 17 °C | 0% | 4% | 10.9 † |
| November | 59% | 22% | 156 | 11 °C | 0% | 30% | 9.5 † |
| December | 33% | 16% | 93 | 8 °C | 0% | 66% | 8.9 † |
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 Grinzane Cavour → Ventimiglia, km/h | Headwind > 15 km/h, Grinzane Cavour → Ventimiglia | Headwind > 15 km/h, Ventimiglia → Grinzane Cavour | Better way |
|---|---|---|---|---|
| January | +2.0 | 0% | 3% | Grinzane Cavour → Ventimiglia |
| February | +1.7 | 0% | 3% | either |
| March | +1.8 | 1% | 4% | either |
| April | +0.8 | 1% | 2% | either |
| May | −0.3 | 0% | 1% | either |
| June | −1.0 | 1% | 0% | either |
| July | −1.1 | 0% | 0% | either |
| August | −0.2 | 0% | 0% | either |
| September | +1.0 | 1% | 1% | either |
| October | +2.0 | 1% | 2% | Grinzane Cavour → Ventimiglia |
| November | +2.4 | 0% | 3% | Grinzane Cavour → Ventimiglia |
| December | +1.9 | 0% | 2% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in October, km/h |
|---|---|---|
| 0–2 | NE | −2.7 |
| 2–27 | SW | +3.1 |
| 27–52 | SE | +2.6 |
| 52–77 | S | +2.9 |
| 77–102 | SW | +2.8 |
| 102–128 | SE | −0.6 |
| 128–153 | SE | +0.9 |
| 153–178 | SW | +2.9 |
| 178–186 | W | +1.1 |
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.