Green Velo - 12 Góry Świętokrzyskie i okolica: which way and when to ride
The best month for Green Velo - 12 Góry Świętokrzyskie i okolica is September: 79% of days were dry with highs of 10–30 °C. In September the wind barely favours either direction — on average 1.4 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 | 2% | 22% | 49 | 1 °C | 0% | 98% | 8.4 † |
| February | 6% | 18% | 41 | 3 °C | 0% | 93% | 9.9 † |
| March | 31% | 20% | 44 | 8 °C | 0% | 65% | 11.7 |
| April | 62% | 23% | 48 | 14 °C | 0% | 26% | 13.8 |
| May | 68% | 30% | 77 | 18 °C | 0% | 3% | 15.5 |
| June | 68% | 28% | 75 | 23 °C | 6% | 0% | 16.5 |
| July | 58% | 32% | 94 | 25 °C | 13% | 0% | 16.1 |
| August | 66% | 24% | 77 | 25 °C | 11% | 0% | 14.5 |
| September | 79% | 19% | 67 | 19 °C | 1% | 2% | 12.5 |
| October | 65% | 18% | 52 | 13 °C | 0% | 24% | 10.6 † |
| November | 26% | 18% | 44 | 7 °C | 0% | 69% | 8.8 † |
| December | 3% | 16% | 41 | 3 °C | 0% | 96% | 8.0 † |
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 near Staszów → Końskie, km/h | Headwind > 15 km/h, near Staszów → Końskie | Headwind > 15 km/h, Końskie → near Staszów | Better way |
|---|---|---|---|---|
| January | −1.5 | 15% | 8% | either |
| February | −1.7 | 16% | 8% | either |
| March | −2.5 | 16% | 8% | Końskie → near Staszów |
| April | −2.7 | 16% | 6% | Końskie → near Staszów |
| May | −2.2 | 13% | 6% | Końskie → near Staszów |
| June | −3.0 | 13% | 4% | Końskie → near Staszów |
| July | −4.4 | 15% | 2% | Końskie → near Staszów |
| August | −1.5 | 9% | 4% | either |
| September | −1.4 | 12% | 6% | either |
| October | −0.2 | 10% | 8% | either |
| November | +0.9 | 10% | 9% | either |
| December | −0.8 | 13% | 9% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–25 | W | −1.8 |
| 25–51 | NW | −1.9 |
| 51–76 | NW | −1.8 |
| 76–101 | NW | −2.0 |
| 101–127 | N | 0.0 |
| 127–132 | NE | +1.5 |
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.