Mrkonjic: which way and when to ride
The best month for Mrkonjic is October: 71% of days were dry with highs of 10–30 °C. In October the wind barely favours either direction — on average 0.5 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 | 14% | 25% | 93 | 4 °C | 0% | 84% | 9.2 † |
| February | 26% | 29% | 91 | 6 °C | 0% | 70% | 10.4 † |
| March | 43% | 32% | 106 | 10 °C | 0% | 47% | 11.8 |
| April | 56% | 37% | 103 | 15 °C | 0% | 16% | 13.4 |
| May | 55% | 44% | 142 | 19 °C | 0% | 3% | 14.8 |
| June | 54% | 39% | 101 | 23 °C | 8% | 0% | 15.5 |
| July | 51% | 32% | 86 | 26 °C | 21% | 0% | 15.2 |
| August | 56% | 28% | 84 | 26 °C | 18% | 0% | 14.0 |
| September | 67% | 31% | 111 | 21 °C | 2% | 3% | 12.4 |
| October | 71% | 21% | 95 | 16 °C | 0% | 13% | 10.9 † |
| November | 44% | 27% | 115 | 10 °C | 0% | 45% | 9.5 † |
| December | 15% | 25% | 104 | 6 °C | 0% | 81% | 8.8 † |
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 Velagići → Bihac, km/h | Headwind > 15 km/h, Velagići → Bihac | Headwind > 15 km/h, Bihac → Velagići | Better way |
|---|---|---|---|---|
| January | +0.5 | 0% | 0% | either |
| February | +0.3 | 0% | 0% | either |
| March | +0.3 | 0% | 0% | either |
| April | 0.0 | 0% | 0% | either |
| May | −0.5 | 0% | 0% | either |
| June | −0.5 | 0% | 0% | either |
| July | +0.1 | 0% | 0% | either |
| August | +0.8 | 0% | 0% | either |
| September | +0.5 | 0% | 0% | either |
| October | +0.5 | 0% | 0% | either |
| November | +0.7 | 0% | 0% | either |
| December | +0.7 | 0% | 0% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in October, km/h |
|---|---|---|
| 0–2 | E | −0.5 |
| 2–27 | W | +0.3 |
| 27–52 | NW | +0.4 |
| 52–79 | W | +0.8 |
| 79–104 | NW | +0.5 |
| 104–130 | NW | +0.5 |
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.