LF Maasroute, stage 4: Dordrecht → Rotterdam
On stage 4 (Dordrecht → Rotterdam, 121 km) the best month is June: 79% of days were dry with highs of 10–30 °C; the wind barely favours either direction (1.5 km/h on average; ERA5 2006–2025, 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 | 7% | 26% | 69 | 6 °C | 0% | 86% | 8.2 † |
| February | 15% | 25% | 57 | 7 °C | 0% | 78% | 9.9 † |
| March | 40% | 23% | 55 | 10 °C | 0% | 53% | 11.7 |
| April | 66% | 19% | 42 | 14 °C | 0% | 20% | 13.8 |
| May | 72% | 26% | 65 | 17 °C | 0% | 3% | 15.6 |
| June | 79% | 20% | 63 | 20 °C | 1% | 0% | 16.7 |
| July | 68% | 28% | 80 | 22 °C | 4% | 0% | 16.2 |
| August | 67% | 30% | 78 | 22 °C | 3% | 0% | 14.6 |
| September | 75% | 25% | 64 | 19 °C | 1% | 0% | 12.6 |
| October | 71% | 26% | 81 | 15 °C | 0% | 5% | 10.5 † |
| November | 38% | 30% | 71 | 10 °C | 0% | 45% | 8.7 † |
| December | 16% | 24% | 74 | 7 °C | 0% | 75% | 7.8 † |
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 Dordrecht → Rotterdam, km/h | Headwind > 15 km/h, Dordrecht → Rotterdam | Headwind > 15 km/h, Rotterdam → Dordrecht | Better way |
|---|---|---|---|---|
| January | −0.4 | 16% | 14% | either |
| February | −0.1 | 16% | 15% | either |
| March | −0.6 | 15% | 13% | either |
| April | −0.7 | 12% | 11% | either |
| May | −1.2 | 14% | 11% | either |
| June | −1.5 | 12% | 9% | either |
| July | −1.7 | 15% | 12% | either |
| August | −1.3 | 13% | 11% | either |
| September | −0.5 | 12% | 10% | either |
| October | +0.2 | 12% | 12% | either |
| November | +0.3 | 11% | 11% | either |
| December | 0.0 | 13% | 12% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in June, km/h |
|---|---|---|
| 350–375 | W | −5.3 |
| 375–400 | NW | −6.1 |
| 400–426 | NW | −6.8 |
| 426–451 | E | +6.8 |
| 451–471 | E | +5.5 |
Other stages
- Maastricht → Venlo 116 km
- Venlo → Lith 127 km
- Lith → Dordrecht 108 km
- Dordrecht → Rotterdam 121 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.