33 Šumavská magistrála: which way and when to ride
The best month for 33 Šumavská magistrála is September: 68% 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).
Also passes through Germany
Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 1% | 28% | 75 | 0 °C | 0% | 99% | 8.7 † |
| February | 4% | 22% | 54 | 2 °C | 0% | 95% | 10.1 † |
| March | 25% | 26% | 63 | 7 °C | 0% | 72% | 11.7 |
| April | 53% | 31% | 64 | 13 °C | 0% | 32% | 13.6 |
| May | 52% | 44% | 119 | 16 °C | 0% | 11% | 15.3 |
| June | 57% | 41% | 123 | 21 °C | 2% | 1% | 16.2 |
| July | 55% | 42% | 124 | 22 °C | 4% | 0% | 15.8 |
| August | 59% | 38% | 114 | 22 °C | 4% | 0% | 14.4 |
| September | 68% | 30% | 84 | 17 °C | 0% | 6% | 12.5 |
| October | 55% | 24% | 59 | 12 °C | 0% | 34% | 10.7 † |
| November | 15% | 21% | 60 | 6 °C | 0% | 84% | 9.1 † |
| December | 1% | 24% | 67 | 2 °C | 0% | 99% | 8.3 † |
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 Všeruby → Vyšší Brod, km/h | Headwind > 15 km/h, Všeruby → Vyšší Brod | Headwind > 15 km/h, Vyšší Brod → Všeruby | Better way |
|---|---|---|---|---|
| January | +3.0 | 1% | 8% | Všeruby → Vyšší Brod |
| February | +2.4 | 1% | 7% | Všeruby → Vyšší Brod |
| March | +2.3 | 3% | 8% | Všeruby → Vyšší Brod |
| April | +1.6 | 3% | 5% | either |
| May | +1.4 | 3% | 4% | either |
| June | +2.4 | 0% | 3% | Všeruby → Vyšší Brod |
| July | +3.7 | 0% | 3% | Všeruby → Vyšší Brod |
| August | +2.0 | 0% | 2% | Všeruby → Vyšší Brod |
| September | +1.4 | 1% | 4% | either |
| October | +1.3 | 1% | 4% | either |
| November | +1.2 | 1% | 5% | either |
| December | +1.9 | 1% | 5% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–25 | SE | +1.3 |
| 25–50 | E | +2.2 |
| 50–76 | SE | +1.4 |
| 76–101 | SE | +1.0 |
| 101–126 | SE | +0.8 |
| 126–151 | E | +1.7 |
| 151–176 | SE | +1.4 |
| 176–201 | SE | +1.3 |
| 201–207 | SE | +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.