EuroVelo 10 - Baltic Sea Cycle Route - part Poland, stage 4: Wierzchucino → Gdańsk
On stage 4 (Wierzchucino → Gdańsk, 108 km) the best month is September: 78% 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).
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Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 1% | 23% | 54 | 2 °C | 0% | 99% | 7.8 † |
| February | 1% | 18% | 40 | 2 °C | 0% | 99% | 9.6 † |
| March | 12% | 19% | 36 | 6 °C | 0% | 86% | 11.7 |
| April | 39% | 16% | 35 | 10 °C | 0% | 55% | 14.0 |
| May | 68% | 24% | 55 | 14 °C | 0% | 11% | 16.1 |
| June | 73% | 27% | 63 | 19 °C | 0% | 0% | 17.2 |
| July | 68% | 31% | 94 | 21 °C | 1% | 0% | 16.8 |
| August | 69% | 30% | 79 | 21 °C | 0% | 0% | 14.9 |
| September | 78% | 22% | 59 | 18 °C | 0% | 0% | 12.6 |
| October | 61% | 22% | 60 | 12 °C | 0% | 23% | 10.4 † |
| November | 17% | 22% | 56 | 7 °C | 0% | 79% | 8.3 † |
| December | 2% | 22% | 53 | 4 °C | 0% | 98% | 7.3 † |
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 Wierzchucino → Gdańsk, km/h | Headwind > 15 km/h, Wierzchucino → Gdańsk | Headwind > 15 km/h, Gdańsk → Wierzchucino | Better way |
|---|---|---|---|---|
| January | +1.4 | 18% | 22% | either |
| February | +1.7 | 17% | 22% | either |
| March | +3.0 | 13% | 22% | Wierzchucino → Gdańsk |
| April | +4.2 | 10% | 24% | Wierzchucino → Gdańsk |
| May | +3.1 | 10% | 20% | Wierzchucino → Gdańsk |
| June | +4.8 | 8% | 23% | Wierzchucino → Gdańsk |
| July | +5.6 | 6% | 24% | Wierzchucino → Gdańsk |
| August | +2.9 | 8% | 19% | Wierzchucino → Gdańsk |
| September | +1.8 | 14% | 21% | either |
| October | +0.5 | 18% | 19% | either |
| November | −0.7 | 19% | 17% | either |
| December | +1.4 | 17% | 22% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 347–373 | E | +4.0 |
| 373–398 | SE | +3.0 |
| 398–423 | S | 0.0 |
| 423–449 | S | +0.4 |
| 449–455 | SE | +0.2 |
Other stages
- Świnoujście → Kołobrzeg 114 km
- Kołobrzeg → Ustka 117 km
- Ustka → Wierzchucino 118 km
- Wierzchucino → Gdańsk 108 km
- Gdańsk → Mamonovo 129 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.