Green Velo - 07 Dolina Bugu: which way and when to ride
The best month for Green Velo - 07 Dolina Bugu is September: 79% of days were dry with highs of 10–30 °C. In September the wind barely favours either direction — on average 0.0 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 | 1% | 21% | 48 | 0 °C | 0% | 99% | 8.2 † |
| February | 3% | 16% | 34 | 2 °C | 0% | 97% | 9.8 † |
| March | 27% | 18% | 37 | 7 °C | 0% | 70% | 11.7 |
| April | 61% | 22% | 44 | 14 °C | 0% | 26% | 13.8 |
| May | 68% | 30% | 74 | 19 °C | 1% | 2% | 15.7 |
| June | 67% | 28% | 73 | 23 °C | 7% | 0% | 16.7 |
| July | 60% | 30% | 87 | 25 °C | 14% | 0% | 16.3 |
| August | 63% | 23% | 75 | 25 °C | 16% | 0% | 14.7 |
| September | 79% | 19% | 57 | 19 °C | 1% | 3% | 12.6 |
| October | 60% | 17% | 49 | 13 °C | 0% | 30% | 10.5 † |
| November | 18% | 18% | 40 | 6 °C | 0% | 78% | 8.7 † |
| December | 2% | 18% | 43 | 2 °C | 0% | 98% | 7.7 † |
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 Czeremcha → Sławatycze, km/h | Headwind > 15 km/h, Czeremcha → Sławatycze | Headwind > 15 km/h, Sławatycze → Czeremcha | Better way |
|---|---|---|---|---|
| January | −1.5 | 12% | 9% | either |
| February | −0.9 | 12% | 10% | either |
| March | +0.8 | 10% | 13% | either |
| April | +1.5 | 8% | 13% | either |
| May | +1.4 | 7% | 11% | either |
| June | +1.8 | 5% | 11% | either |
| July | +2.0 | 5% | 11% | either |
| August | −0.2 | 6% | 7% | either |
| September | 0.0 | 8% | 9% | either |
| October | −1.8 | 11% | 8% | either |
| November | −3.2 | 13% | 5% | Sławatycze → Czeremcha |
| December | −2.1 | 13% | 8% | Sławatycze → Czeremcha |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–26 | SW | −1.9 |
| 26–51 | S | −0.5 |
| 51–76 | SE | +1.1 |
| 76–101 | SE | +1.2 |
| 101–127 | SE | +1.2 |
| 127–152 | S | −0.8 |
| 152–158 | SW | −1.3 |
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.