Radweg D11: Ostsee – Oberbayern, stage 3: Zehdenick → Potsdam
On stage 3 (Zehdenick → Potsdam, 122 km) the best month is September: 80% of days were dry with highs of 10–30 °C, and riding Potsdam → Zehdenick meant an average tailwind of 2.1 km/h (ERA5 2006–2025, 9:00–18:00).
← Radweg D11: Ostsee – Oberbayern (Whole route)
Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 4% | 24% | 56 | 3 °C | 0% | 94% | 8.1 † |
| February | 10% | 17% | 40 | 5 °C | 0% | 86% | 9.8 † |
| March | 33% | 23% | 43 | 9 °C | 0% | 61% | 11.7 |
| April | 68% | 20% | 34 | 14 °C | 0% | 21% | 13.9 |
| May | 78% | 20% | 52 | 19 °C | 1% | 2% | 15.8 |
| June | 72% | 22% | 58 | 23 °C | 7% | 0% | 16.8 |
| July | 64% | 25% | 84 | 24 °C | 12% | 0% | 16.4 |
| August | 69% | 22% | 59 | 24 °C | 10% | 0% | 14.7 |
| September | 80% | 18% | 48 | 20 °C | 2% | 0% | 12.6 |
| October | 69% | 20% | 53 | 14 °C | 0% | 15% | 10.5 † |
| November | 27% | 17% | 46 | 8 °C | 0% | 66% | 8.6 † |
| December | 6% | 20% | 49 | 5 °C | 0% | 90% | 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 Zehdenick → Potsdam, km/h | Headwind > 15 km/h, Zehdenick → Potsdam | Headwind > 15 km/h, Potsdam → Zehdenick | Better way |
|---|---|---|---|---|
| January | −4.7 | 16% | 2% | Potsdam → Zehdenick |
| February | −3.4 | 12% | 3% | Potsdam → Zehdenick |
| March | −1.7 | 9% | 4% | either |
| April | +0.4 | 6% | 6% | either |
| May | 0.0 | 6% | 5% | either |
| June | −0.5 | 5% | 3% | either |
| July | −1.6 | 6% | 2% | either |
| August | −2.5 | 5% | 1% | Potsdam → Zehdenick |
| September | −2.1 | 6% | 2% | Potsdam → Zehdenick |
| October | −4.0 | 11% | 3% | Potsdam → Zehdenick |
| November | −5.0 | 12% | 1% | Potsdam → Zehdenick |
| December | −5.9 | 16% | 1% | Potsdam → Zehdenick |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 278–303 | S | −1.1 |
| 303–328 | SW | −2.7 |
| 328–356 | S | −0.6 |
| 356–381 | SW | −3.1 |
| 381–400 | SW | −3.4 |
Other stages
- Warnemünde → Waren 142 km
- Waren → Zehdenick 138 km
- Zehdenick → Potsdam 122 km
- Potsdam → Gräfenhainichen 124 km
- Gräfenhainichen → Halle (Saale) 142 km
- Halle (Saale) → Jena 114 km
- Jena → Rosenthal 137 km
- Rosenthal → Lichtenfels 134 km
- Lichtenfels → Nuremberg 117 km
- Nuremberg → Kelheim 128 km
- Kelheim → Freising 127 km
- Freising → Rosenheim 105 km
- Rosenheim → Freilassing 90 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.