Ostseeküsten-Radweg, stage 1: Flensburg → Eckernförde
On stage 1 (Flensburg → Eckernförde, 118 km) the best month is September: 76% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.4 km/h on average; ERA5 2006–2025, 9:00–18:00).
← Ostseeküsten-Radweg (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 | 1% | 26% | 68 | 4 °C | 0% | 97% | 7.8 † |
| February | 4% | 22% | 52 | 4 °C | 0% | 95% | 9.6 † |
| March | 19% | 21% | 45 | 7 °C | 0% | 79% | 11.7 |
| April | 53% | 23% | 44 | 11 °C | 0% | 38% | 14.0 |
| May | 73% | 24% | 62 | 16 °C | 0% | 6% | 16.1 |
| June | 74% | 26% | 68 | 19 °C | 0% | 0% | 17.3 |
| July | 68% | 31% | 77 | 21 °C | 1% | 0% | 16.8 |
| August | 69% | 31% | 76 | 21 °C | 1% | 0% | 14.9 |
| September | 76% | 24% | 61 | 18 °C | 0% | 0% | 12.6 |
| October | 65% | 27% | 73 | 13 °C | 0% | 12% | 10.4 † |
| November | 22% | 24% | 58 | 8 °C | 0% | 68% | 8.3 † |
| December | 4% | 24% | 66 | 5 °C | 0% | 93% | 7.2 † |
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 Flensburg → Eckernförde, km/h | Headwind > 15 km/h, Flensburg → Eckernförde | Headwind > 15 km/h, Eckernförde → Flensburg | Better way |
|---|---|---|---|---|
| January | +0.2 | 16% | 16% | either |
| February | −0.3 | 16% | 15% | either |
| March | +1.1 | 14% | 18% | either |
| April | +1.4 | 11% | 18% | either |
| May | +1.7 | 12% | 18% | either |
| June | +2.8 | 8% | 19% | Flensburg → Eckernförde |
| July | +2.8 | 9% | 18% | Flensburg → Eckernförde |
| August | +1.3 | 9% | 14% | either |
| September | +0.4 | 12% | 15% | either |
| October | −1.1 | 15% | 13% | either |
| November | −1.4 | 15% | 12% | either |
| December | −0.5 | 14% | 13% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–25 | E | +4.7 |
| 25–50 | SE | +2.1 |
| 50–76 | SE | 0.0 |
| 76–101 | SE | −1.1 |
| 101–118 | SW | −5.9 |
Other stages
- Flensburg → Eckernförde 118 km
- Eckernförde → Oldenburg in Holstein 122 km
- Oldenburg in Holstein → Grossenbrode 103 km
- Grossenbrode → Wismar 138 km
- Wismar → Zingst 135 km
- Zingst → Universitäts- und Hansestadt Greifswald 96 km
- Universitäts- und Hansestadt Greifswald → Swinemünde 89 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.