Kapčiamiestis - Vilnius: which way and when to ride
The best month for Kapčiamiestis - Vilnius is September: 78% of days were dry with highs of 10–30 °C. In September the wind barely favours either direction — on average 1.7 km/h along the route (ERA5 2006–2025, daytime 9:00–18:00).
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% | 50 | -1 °C | 0% | 100% | 7.9 † |
| February | 1% | 19% | 37 | 0 °C | 0% | 99% | 9.7 † |
| March | 18% | 18% | 35 | 6 °C | 0% | 81% | 11.7 |
| April | 54% | 23% | 44 | 12 °C | 0% | 35% | 14.0 |
| May | 69% | 28% | 64 | 18 °C | 0% | 4% | 16.0 |
| June | 70% | 27% | 70 | 22 °C | 3% | 0% | 17.2 |
| July | 61% | 34% | 103 | 24 °C | 5% | 0% | 16.7 |
| August | 68% | 27% | 80 | 23 °C | 6% | 0% | 14.9 |
| September | 78% | 20% | 52 | 18 °C | 0% | 3% | 12.6 |
| October | 49% | 21% | 55 | 11 °C | 0% | 41% | 10.4 † |
| November | 8% | 19% | 45 | 5 °C | 0% | 90% | 8.4 † |
| December | 0% | 19% | 46 | 1 °C | 0% | 100% | 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 near Lazdijai → Vilnius, km/h | Headwind > 15 km/h, near Lazdijai → Vilnius | Headwind > 15 km/h, Vilnius → near Lazdijai | Better way |
|---|---|---|---|---|
| January | +3.1 | 6% | 16% | near Lazdijai → Vilnius |
| February | +2.6 | 6% | 15% | near Lazdijai → Vilnius |
| March | +2.4 | 6% | 13% | near Lazdijai → Vilnius |
| April | +1.7 | 7% | 12% | either |
| May | +0.4 | 7% | 9% | either |
| June | +1.9 | 4% | 10% | either |
| July | +2.2 | 3% | 9% | near Lazdijai → Vilnius |
| August | +2.1 | 3% | 8% | near Lazdijai → Vilnius |
| September | +1.7 | 5% | 11% | either |
| October | +3.1 | 6% | 15% | near Lazdijai → Vilnius |
| November | +3.4 | 4% | 14% | near Lazdijai → Vilnius |
| December | +3.9 | 4% | 16% | near Lazdijai → Vilnius |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–26 | SE | −0.1 |
| 26–55 | NE | +2.6 |
| 55–81 | S | −0.9 |
| 81–107 | E | +2.3 |
| 107–133 | N | +1.4 |
| 133–158 | N | +1.4 |
| 158–184 | NE | +2.9 |
| 184–209 | N | +2.1 |
| 209–235 | E | +2.7 |
| 235–261 | E | +2.4 |
| 261–270 | NE | +3.1 |
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.