EuroVelo 10 - Baltic Sea Cycle Route - part Finland, stage 12: Helsinki → Lovisa
On stage 12 (Helsinki → Lovisa, 115 km) the best month is June: 73% of days were dry with highs of 10–30 °C, and riding Helsinki → Lovisa meant an average tailwind of 4.2 km/h (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 | 0% | 23% | 54 | -2 °C | 0% | 100% | 6.6 † |
| February | 0% | 19% | 43 | -2 °C | 0% | 100% | 9.0 † |
| March | 3% | 14% | 37 | 2 °C | 0% | 97% | 11.6 |
| April | 31% | 19% | 39 | 8 °C | 0% | 67% | 14.5 |
| May | 72% | 21% | 47 | 15 °C | 0% | 14% | 17.2 |
| June | 73% | 26% | 64 | 19 °C | 1% | 1% | 18.9 |
| July | 72% | 26% | 68 | 22 °C | 2% | 0% | 18.2 |
| August | 71% | 28% | 73 | 21 °C | 0% | 0% | 15.7 |
| September | 72% | 23% | 59 | 16 °C | 0% | 6% | 12.8 |
| October | 32% | 22% | 62 | 9 °C | 0% | 57% | 9.9 † |
| November | 3% | 22% | 56 | 4 °C | 0% | 96% | 7.3 † |
| December | 0% | 23% | 61 | 1 °C | 0% | 100% | 5.8 † |
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 Helsinki → Lovisa, km/h | Headwind > 15 km/h, Helsinki → Lovisa | Headwind > 15 km/h, Lovisa → Helsinki | Better way |
|---|---|---|---|---|
| January | +2.7 | 6% | 16% | Helsinki → Lovisa |
| February | +2.4 | 4% | 13% | Helsinki → Lovisa |
| March | +3.4 | 5% | 17% | Helsinki → Lovisa |
| April | +3.0 | 5% | 14% | Helsinki → Lovisa |
| May | +3.0 | 5% | 15% | Helsinki → Lovisa |
| June | +4.2 | 4% | 16% | Helsinki → Lovisa |
| July | +3.5 | 3% | 14% | Helsinki → Lovisa |
| August | +3.6 | 5% | 15% | Helsinki → Lovisa |
| September | +3.6 | 5% | 16% | Helsinki → Lovisa |
| October | +4.1 | 6% | 18% | Helsinki → Lovisa |
| November | +3.5 | 7% | 16% | Helsinki → Lovisa |
| December | +4.5 | 5% | 20% | Helsinki → Lovisa |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in June, km/h |
|---|---|---|
| 1,356–1,383 | NE | +5.4 |
| 1,383–1,408 | NE | +5.5 |
| 1,408–1,433 | NE | +3.7 |
| 1,433–1,458 | E | +2.5 |
| 1,458–1,471 | E | +3.4 |
Other stages
- Tornio → Oulu 146 km
- Oulu → Pyhäjoki 125 km
- Pyhäjoki → Kokkola 141 km
- Kokkola → Oravais 102 km
- Oravais → Malax 102 km
- Malax → Kristinestad 114 km
- Kristinestad → Pori 130 km
- Pori → Uusikaupunki 135 km
- Uusikaupunki → Turku 112 km
- Turku → Raseborg 129 km
- Raseborg → Helsinki 124 km
- Helsinki → Lovisa 115 km
- Lovisa → near Virojoki 138 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.