19 Posázavská cyklotrasa (Lísek - Davle): which way and when to ride
The best month for 19 Posázavská cyklotrasa (Lísek - Davle) is September: 76% of days were dry with highs of 10–30 °C. In September the wind barely favours either direction — on average 1.8 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% | 21% | 49 | 2 °C | 0% | 97% | 8.6 † |
| February | 7% | 17% | 38 | 3 °C | 0% | 92% | 10.0 † |
| March | 32% | 23% | 46 | 8 °C | 0% | 64% | 11.7 |
| April | 61% | 25% | 47 | 14 °C | 0% | 27% | 13.7 |
| May | 65% | 33% | 83 | 17 °C | 0% | 5% | 15.3 |
| June | 67% | 31% | 89 | 22 °C | 3% | 0% | 16.3 |
| July | 63% | 30% | 89 | 24 °C | 8% | 0% | 15.9 |
| August | 65% | 27% | 94 | 23 °C | 8% | 0% | 14.4 |
| September | 76% | 22% | 73 | 19 °C | 1% | 3% | 12.5 |
| October | 61% | 20% | 51 | 13 °C | 0% | 27% | 10.6 † |
| November | 21% | 18% | 45 | 7 °C | 0% | 77% | 9.0 † |
| December | 2% | 19% | 46 | 3 °C | 0% | 97% | 8.1 † |
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 Davle → near Nové Město na Moravě, km/h | Headwind > 15 km/h, Davle → near Nové Město na Moravě | Headwind > 15 km/h, near Nové Město na Moravě → Davle | Better way |
|---|---|---|---|---|
| January | +4.2 | 3% | 19% | Davle → near Nové Město na Moravě |
| February | +3.5 | 4% | 17% | Davle → near Nové Město na Moravě |
| March | +3.3 | 6% | 16% | Davle → near Nové Město na Moravě |
| April | +2.0 | 5% | 11% | either |
| May | +1.4 | 6% | 10% | either |
| June | +2.9 | 2% | 9% | Davle → near Nové Město na Moravě |
| July | +4.8 | 1% | 11% | Davle → near Nové Město na Moravě |
| August | +2.7 | 1% | 6% | Davle → near Nové Město na Moravě |
| September | +1.8 | 3% | 9% | either |
| October | +1.6 | 4% | 10% | either |
| November | +1.5 | 5% | 12% | either |
| December | +3.2 | 4% | 15% | Davle → near Nové Město na Moravě |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–25 | E | +2.2 |
| 25–50 | E | +2.1 |
| 50–76 | E | +2.1 |
| 76–101 | SE | +1.2 |
| 101–126 | SE | +1.9 |
| 126–151 | SE | +1.7 |
| 151–176 | E | +1.8 |
| 176–201 | E | +1.7 |
| 201–226 | E | +1.6 |
| 226–234 | E | +1.6 |
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.