EuroVelo 1 - Atlantic Coast Route - part United Kingdom 2, stage 3: Swansea → Newport
On stage 3 (Swansea → Newport, 108 km) the best month is June: 74% of days were dry with highs of 10–30 °C, and riding Swansea → Newport meant an average tailwind of 6.0 km/h (ERA5 2006–2025, 9:00–18:00).
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Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 10% | 30% | 101 | 8 °C | 0% | 79% | 8.3 † |
| February | 13% | 26% | 83 | 8 °C | 0% | 79% | 9.9 † |
| March | 32% | 28% | 78 | 10 °C | 0% | 56% | 11.7 |
| April | 65% | 23% | 56 | 12 °C | 0% | 19% | 13.8 |
| May | 70% | 29% | 79 | 15 °C | 0% | 1% | 15.6 |
| June | 74% | 26% | 76 | 18 °C | 0% | 0% | 16.6 |
| July | 72% | 28% | 89 | 19 °C | 0% | 0% | 16.2 |
| August | 70% | 30% | 92 | 19 °C | 0% | 0% | 14.6 |
| September | 74% | 26% | 85 | 17 °C | 0% | 0% | 12.6 |
| October | 67% | 30% | 110 | 14 °C | 0% | 3% | 10.5 † |
| November | 41% | 33% | 117 | 11 °C | 0% | 33% | 8.8 † |
| December | 19% | 32% | 122 | 9 °C | 0% | 61% | 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 Swansea → Newport, km/h | Headwind > 15 km/h, Swansea → Newport | Headwind > 15 km/h, Newport → Swansea | Better way |
|---|---|---|---|---|
| January | +7.5 | 9% | 35% | Swansea → Newport |
| February | +5.8 | 13% | 34% | Swansea → Newport |
| March | +3.2 | 17% | 28% | Swansea → Newport |
| April | +1.1 | 17% | 22% | either |
| May | +4.6 | 11% | 30% | Swansea → Newport |
| June | +6.0 | 8% | 30% | Swansea → Newport |
| July | +10.2 | 3% | 41% | Swansea → Newport |
| August | +10.0 | 4% | 41% | Swansea → Newport |
| September | +6.0 | 9% | 31% | Swansea → Newport |
| October | +4.6 | 11% | 29% | Swansea → Newport |
| November | +6.1 | 10% | 30% | Swansea → Newport |
| December | +8.0 | 10% | 36% | Swansea → Newport |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in June, km/h |
|---|---|---|
| 222–247 | E | +5.7 |
| 247–272 | E | +6.7 |
| 272–298 | E | +6.0 |
| 298–323 | E | +5.8 |
| 323–330 | E | +5.9 |
Other stages
- Fishguard → Saundersfoot 110 km
- Saundersfoot → Swansea 112 km
- Swansea → Newport 108 km
- Newport → Street 122 km
- Street → Barnstaple 143 km
- Barnstaple → Plymouth 136 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.