EuroVelo 13 - Iron Curtain Trail - part Latvia, stage 4: Ventspils → Liepāja
On stage 4 (Ventspils → Liepāja, 128 km) the best month is June: 81% of days were dry with highs of 10–30 °C, and riding Liepāja → Ventspils meant an average tailwind of 2.4 km/h (ERA5 2006–2025, 9:00–18:00).
← EuroVelo 13 - Iron Curtain Trail - part Latvia (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 | 0% | 22% | 57 | 1 °C | 0% | 100% | 7.4 † |
| February | 0% | 17% | 38 | 1 °C | 0% | 100% | 9.4 † |
| March | 6% | 16% | 34 | 4 °C | 0% | 94% | 11.6 |
| April | 34% | 15% | 31 | 9 °C | 0% | 63% | 14.2 |
| May | 72% | 16% | 39 | 14 °C | 0% | 16% | 16.5 |
| June | 81% | 19% | 53 | 18 °C | 0% | 0% | 17.8 |
| July | 75% | 25% | 78 | 21 °C | 0% | 0% | 17.2 |
| August | 70% | 30% | 86 | 21 °C | 0% | 0% | 15.2 |
| September | 77% | 23% | 66 | 17 °C | 0% | 1% | 12.7 |
| October | 48% | 27% | 76 | 11 °C | 0% | 33% | 10.2 † |
| November | 10% | 23% | 60 | 7 °C | 0% | 86% | 8.0 † |
| December | 0% | 25% | 59 | 3 °C | 0% | 100% | 6.8 † |
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 Ventspils → Liepāja, km/h | Headwind > 15 km/h, Ventspils → Liepāja | Headwind > 15 km/h, Liepāja → Ventspils | Better way |
|---|---|---|---|---|
| January | −6.1 | 31% | 9% | Liepāja → Ventspils |
| February | −5.1 | 27% | 9% | Liepāja → Ventspils |
| March | −3.4 | 26% | 13% | Liepāja → Ventspils |
| April | −0.1 | 19% | 18% | either |
| May | −0.7 | 17% | 14% | either |
| June | −2.4 | 18% | 11% | Liepāja → Ventspils |
| July | −2.4 | 17% | 10% | Liepāja → Ventspils |
| August | −4.7 | 22% | 7% | Liepāja → Ventspils |
| September | −4.2 | 25% | 9% | Liepāja → Ventspils |
| October | −6.2 | 32% | 9% | Liepāja → Ventspils |
| November | −7.4 | 30% | 7% | Liepāja → Ventspils |
| December | −8.3 | 36% | 7% | Liepāja → Ventspils |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in June, km/h |
|---|---|---|
| 374–400 | S | −2.0 |
| 400–425 | S | −1.3 |
| 425–451 | SW | −4.2 |
| 451–477 | S | −1.0 |
| 477–502 | SW | −3.2 |
Other stages
- Ainaži → Riga 143 km
- Riga → near Roja 115 km
- near Roja → Ventspils 120 km
- Ventspils → Liepāja 128 km
- Liepāja → near Šventoji 61 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.