Ciclovia Pedemontana Alpina - Laghi di Lombardia: which way and when to ride
The best month for Ciclovia Pedemontana Alpina - Laghi di Lombardia is October: 77% of days were dry with highs of 10–30 °C. In October the wind barely favours either direction — on average 1.0 km/h along the route (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 | 19% | 13% | 67 | 7 °C | 0% | 80% | 9.0 † |
| February | 42% | 18% | 79 | 9 °C | 0% | 57% | 10.3 † |
| March | 68% | 19% | 98 | 13 °C | 0% | 23% | 11.8 |
| April | 71% | 28% | 127 | 17 °C | 0% | 4% | 13.5 |
| May | 66% | 33% | 162 | 21 °C | 1% | 0% | 14.9 |
| June | 54% | 32% | 141 | 26 °C | 15% | 0% | 15.7 |
| July | 47% | 27% | 126 | 28 °C | 31% | 0% | 15.4 |
| August | 53% | 28% | 149 | 27 °C | 21% | 0% | 14.1 |
| September | 77% | 23% | 141 | 23 °C | 0% | 0% | 12.5 |
| October | 77% | 22% | 167 | 17 °C | 0% | 2% | 10.8 † |
| November | 59% | 23% | 166 | 12 °C | 0% | 26% | 9.4 † |
| December | 24% | 14% | 79 | 8 °C | 0% | 75% | 8.7 † |
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 Merone → Sesto Calende, km/h | Headwind > 15 km/h, Merone → Sesto Calende | Headwind > 15 km/h, Sesto Calende → Merone | Better way |
|---|---|---|---|---|
| January | +0.8 | 0% | 0% | either |
| February | +0.5 | 0% | 0% | either |
| March | 0.0 | 0% | 0% | either |
| April | +0.1 | 0% | 0% | either |
| May | −0.2 | 0% | 0% | either |
| June | −0.5 | 0% | 0% | either |
| July | −0.2 | 0% | 0% | either |
| August | +0.4 | 0% | 0% | either |
| September | +0.6 | 0% | 0% | either |
| October | +1.0 | 0% | 0% | either |
| November | +0.9 | 0% | 0% | either |
| December | +0.7 | 0% | 0% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in October, km/h |
|---|---|---|
| 0–25 | SW | +0.1 |
| 25–50 | W | +0.7 |
| 50–76 | W | +1.6 |
| 76–101 | SW | +1.6 |
| 101–105 | SW | +0.9 |
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.