5: Värska - Pärnu: which way and when to ride
The best month for 5: Värska - Pärnu is September: 73% of days were dry with highs of 10–30 °C. In September, riding Pärnu → Värska meant an average tailwind of 2.5 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% | 21% | 52 | -2 °C | 0% | 100% | 7.1 † |
| February | 0% | 18% | 39 | -2 °C | 0% | 100% | 9.2 † |
| March | 8% | 19% | 38 | 3 °C | 0% | 91% | 11.6 |
| April | 43% | 23% | 43 | 10 °C | 0% | 53% | 14.3 |
| May | 69% | 25% | 54 | 16 °C | 0% | 11% | 16.7 |
| June | 70% | 29% | 78 | 20 °C | 1% | 1% | 18.2 |
| July | 63% | 34% | 86 | 22 °C | 3% | 0% | 17.6 |
| August | 65% | 34% | 95 | 21 °C | 2% | 0% | 15.3 |
| September | 73% | 24% | 55 | 16 °C | 0% | 4% | 12.7 |
| October | 35% | 25% | 66 | 9 °C | 0% | 52% | 10.1 † |
| November | 4% | 21% | 55 | 4 °C | 0% | 95% | 7.7 † |
| December | 0% | 21% | 51 | 1 °C | 0% | 100% | 6.5 † |
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 Värska → Pärnu, km/h | Headwind > 15 km/h, Värska → Pärnu | Headwind > 15 km/h, Pärnu → Värska | Better way |
|---|---|---|---|---|
| January | −1.7 | 14% | 8% | either |
| February | −1.5 | 13% | 6% | either |
| March | −3.1 | 17% | 6% | Pärnu → Värska |
| April | −3.1 | 16% | 6% | Pärnu → Värska |
| May | −2.3 | 12% | 6% | Pärnu → Värska |
| June | −4.0 | 17% | 4% | Pärnu → Värska |
| July | −3.2 | 13% | 4% | Pärnu → Värska |
| August | −2.5 | 12% | 4% | Pärnu → Värska |
| September | −2.5 | 15% | 6% | Pärnu → Värska |
| October | −2.7 | 15% | 7% | Pärnu → Värska |
| November | −1.5 | 12% | 7% | either |
| December | −2.1 | 15% | 7% | Pärnu → Värska |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–25 | W | −3.3 |
| 25–50 | W | −4.0 |
| 50–76 | W | −3.3 |
| 76–101 | SW | −4.9 |
| 101–126 | W | −2.4 |
| 126–151 | W | −3.3 |
| 151–177 | N | +2.0 |
| 177–203 | N | +2.3 |
| 203–228 | NW | −0.9 |
| 228–253 | W | −3.5 |
| 253–279 | W | −4.6 |
| 279–296 | W | −5.1 |
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.