Radweg D11: Ostsee – Oberbayern, stage 5: Gräfenhainichen → Halle (Saale)
On stage 5 (Gräfenhainichen → Halle (Saale), 142 km) the best month is September: 82% of days were dry with highs of 10–30 °C; the wind barely favours either direction (1.8 km/h on average; 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 | 8% | 21% | 49 | 4 °C | 0% | 89% | 8.3 † |
| February | 15% | 19% | 38 | 6 °C | 0% | 81% | 9.9 † |
| March | 38% | 20% | 40 | 10 °C | 0% | 55% | 11.7 |
| April | 70% | 17% | 32 | 15 °C | 0% | 20% | 13.8 |
| May | 78% | 21% | 58 | 19 °C | 1% | 2% | 15.6 |
| June | 74% | 20% | 52 | 23 °C | 7% | 0% | 16.6 |
| July | 63% | 23% | 69 | 25 °C | 15% | 0% | 16.2 |
| August | 70% | 21% | 64 | 24 °C | 10% | 0% | 14.6 |
| September | 82% | 15% | 49 | 20 °C | 2% | 0% | 12.6 |
| October | 73% | 18% | 49 | 14 °C | 0% | 13% | 10.5 † |
| November | 31% | 17% | 46 | 9 °C | 0% | 62% | 8.7 † |
| December | 10% | 21% | 49 | 5 °C | 0% | 86% | 7.8 † |
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 Gräfenhainichen → Halle (Saale), km/h | Headwind > 15 km/h, Gräfenhainichen → Halle (Saale) | Headwind > 15 km/h, Halle (Saale) → Gräfenhainichen | Better way |
|---|---|---|---|---|
| January | −3.8 | 15% | 3% | Halle (Saale) → Gräfenhainichen |
| February | −2.8 | 12% | 4% | Halle (Saale) → Gräfenhainichen |
| March | −1.9 | 11% | 6% | either |
| April | −0.7 | 8% | 5% | either |
| May | −0.7 | 8% | 5% | either |
| June | −1.7 | 8% | 3% | either |
| July | −2.6 | 9% | 2% | Halle (Saale) → Gräfenhainichen |
| August | −2.3 | 7% | 1% | Halle (Saale) → Gräfenhainichen |
| September | −1.8 | 8% | 3% | either |
| October | −2.7 | 10% | 3% | Halle (Saale) → Gräfenhainichen |
| November | −3.3 | 11% | 2% | Halle (Saale) → Gräfenhainichen |
| December | −4.2 | 14% | 2% | Halle (Saale) → Gräfenhainichen |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 524–550 | NW | −1.9 |
| 550–575 | SW | −3.6 |
| 575–601 | W | −3.7 |
| 601–626 | SW | −3.5 |
| 626–651 | SE | +1.5 |
| 651–666 | SE | +2.2 |
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.