Ätradalsleden: which way and when to ride
The best month for Ätradalsleden is September: 69% of days were dry with highs of 10–30 °C. In September, riding Falkenberg → Falköping meant an average tailwind of 4.5 km/h (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% | 24% | 72 | 1 °C | 0% | 100% | 7.3 † |
| February | 1% | 22% | 55 | 2 °C | 0% | 99% | 9.3 † |
| March | 13% | 20% | 48 | 5 °C | 0% | 86% | 11.6 |
| April | 48% | 23% | 45 | 11 °C | 0% | 45% | 14.2 |
| May | 65% | 32% | 72 | 16 °C | 0% | 9% | 16.6 |
| June | 67% | 33% | 92 | 19 °C | 0% | 0% | 18.0 |
| July | 59% | 40% | 111 | 21 °C | 2% | 0% | 17.4 |
| August | 57% | 42% | 120 | 20 °C | 0% | 0% | 15.2 |
| September | 69% | 31% | 82 | 16 °C | 0% | 2% | 12.7 |
| October | 43% | 27% | 83 | 11 °C | 0% | 40% | 10.2 † |
| November | 8% | 26% | 63 | 6 °C | 0% | 89% | 7.9 † |
| December | 0% | 25% | 72 | 3 °C | 0% | 100% | 6.6 † |
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 Falköping → Falkenberg, km/h | Headwind > 15 km/h, Falköping → Falkenberg | Headwind > 15 km/h, Falkenberg → Falköping | Better way |
|---|---|---|---|---|
| January | −4.3 | 17% | 3% | Falkenberg → Falköping |
| February | −3.7 | 15% | 3% | Falkenberg → Falköping |
| March | −3.0 | 13% | 4% | Falkenberg → Falköping |
| April | −2.4 | 10% | 3% | Falkenberg → Falköping |
| May | −3.0 | 9% | 4% | Falkenberg → Falköping |
| June | −4.6 | 10% | 2% | Falkenberg → Falköping |
| July | −5.1 | 10% | 1% | Falkenberg → Falköping |
| August | −5.4 | 12% | 2% | Falkenberg → Falköping |
| September | −4.5 | 14% | 2% | Falkenberg → Falköping |
| October | −4.6 | 17% | 4% | Falkenberg → Falköping |
| November | −4.2 | 17% | 4% | Falkenberg → Falköping |
| December | −5.2 | 20% | 2% | Falkenberg → Falköping |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–28 | S | −4.1 |
| 28–53 | S | −4.5 |
| 53–78 | S | −4.1 |
| 78–103 | S | −4.2 |
| 103–128 | SW | −4.5 |
| 128–154 | SW | −4.5 |
| 154–179 | SW | −4.9 |
| 179–199 | SW | −5.4 |
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.