EuroVelo 7 - Sun Route - part Italy 1, stage 2: Bolzano → Ala
On stage 2 (Bolzano → Ala, 110 km) the best month is September: 74% of days were dry with highs of 10–30 °C; the wind barely favours either direction (1.9 km/h on average; ERA5 2006–2025, 9:00–18:00).
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Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 4% | 14% | 60 | 4 °C | 0% | 96% | 9.0 † |
| February | 16% | 20% | 72 | 6 °C | 0% | 84% | 10.3 † |
| March | 40% | 23% | 83 | 9 °C | 0% | 57% | 11.8 |
| April | 53% | 34% | 104 | 13 °C | 0% | 26% | 13.5 |
| May | 58% | 42% | 135 | 16 °C | 0% | 3% | 14.9 |
| June | 62% | 38% | 106 | 21 °C | 1% | 0% | 15.7 |
| July | 65% | 33% | 106 | 23 °C | 2% | 0% | 15.4 |
| August | 65% | 33% | 114 | 22 °C | 1% | 0% | 14.1 |
| September | 74% | 26% | 102 | 19 °C | 0% | 1% | 12.5 |
| October | 71% | 23% | 123 | 14 °C | 0% | 12% | 10.8 † |
| November | 32% | 23% | 128 | 9 °C | 0% | 64% | 9.4 † |
| December | 4% | 14% | 76 | 5 °C | 0% | 96% | 8.6 † |
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 Bolzano → Ala, km/h | Headwind > 15 km/h, Bolzano → Ala | Headwind > 15 km/h, Ala → Bolzano | Better way |
|---|---|---|---|---|
| January | +1.1 | 0% | 0% | either |
| February | −0.1 | 0% | 0% | either |
| March | −1.0 | 0% | 0% | either |
| April | −1.8 | 0% | 0% | either |
| May | −2.3 | 0% | 0% | Ala → Bolzano |
| June | −2.9 | 0% | 0% | Ala → Bolzano |
| July | −2.9 | 0% | 0% | Ala → Bolzano |
| August | −2.6 | 0% | 0% | Ala → Bolzano |
| September | −1.9 | 0% | 0% | either |
| October | −1.3 | 0% | 0% | either |
| November | +0.2 | 0% | 0% | either |
| December | +1.2 | 0% | 0% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 124–150 | S | −1.3 |
| 150–175 | SW | −1.7 |
| 175–201 | S | −2.4 |
| 201–226 | S | −2.2 |
| 226–234 | SW | −2.1 |
Other stages
- Sillian → Bolzano 124 km
- Bolzano → Ala 110 km
- Ala → Mantua 101 km
- Mantua → Bologna 127 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.