EuroVelo 1 - Atlantic Coast Route - part Ireland, stage 17: near Ballina → Ballyshannon
On stage 17 (near Ballina → Ballyshannon, 137 km) the best month is September: 64% of days were dry with highs of 10–30 °C, and riding near Ballina → Ballyshannon meant an average tailwind of 4.4 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 | 11% | 39% | 115 | 7 °C | 0% | 79% | 7.9 † |
| February | 14% | 39% | 103 | 8 °C | 0% | 75% | 9.7 † |
| March | 26% | 39% | 96 | 9 °C | 0% | 61% | 11.7 |
| April | 54% | 32% | 76 | 12 °C | 0% | 28% | 14.0 |
| May | 58% | 40% | 95 | 14 °C | 0% | 5% | 16.0 |
| June | 60% | 40% | 101 | 16 °C | 0% | 0% | 17.2 |
| July | 53% | 47% | 117 | 17 °C | 0% | 0% | 16.7 |
| August | 55% | 45% | 126 | 17 °C | 0% | 0% | 14.9 |
| September | 64% | 36% | 105 | 16 °C | 0% | 0% | 12.6 |
| October | 57% | 40% | 125 | 13 °C | 0% | 6% | 10.4 † |
| November | 27% | 42% | 125 | 10 °C | 0% | 51% | 8.4 † |
| December | 11% | 43% | 129 | 8 °C | 0% | 71% | 7.3 † |
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 near Ballina → Ballyshannon, km/h | Headwind > 15 km/h, near Ballina → Ballyshannon | Headwind > 15 km/h, Ballyshannon → near Ballina | Better way |
|---|---|---|---|---|
| January | +6.7 | 6% | 27% | near Ballina → Ballyshannon |
| February | +6.2 | 8% | 29% | near Ballina → Ballyshannon |
| March | +3.7 | 11% | 23% | near Ballina → Ballyshannon |
| April | +1.6 | 11% | 17% | either |
| May | +2.2 | 10% | 19% | near Ballina → Ballyshannon |
| June | +2.2 | 8% | 17% | near Ballina → Ballyshannon |
| July | +3.2 | 6% | 17% | near Ballina → Ballyshannon |
| August | +4.6 | 6% | 22% | near Ballina → Ballyshannon |
| September | +4.4 | 7% | 22% | near Ballina → Ballyshannon |
| October | +5.1 | 7% | 24% | near Ballina → Ballyshannon |
| November | +4.7 | 8% | 23% | near Ballina → Ballyshannon |
| December | +6.7 | 6% | 28% | near Ballina → Ballyshannon |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 1,929–1,955 | NE | +7.5 |
| 1,955–1,980 | E | +4.8 |
| 1,980–2,005 | N | +3.6 |
| 2,005–2,031 | NW | −1.5 |
| 2,031–2,057 | NE | +7.5 |
| 2,057–2,066 | E | +6.2 |
Other stages
- Ballygerry → Trá Mhór 130 km
- Trá Mhór → Midleton 129 km
- Midleton → Clonakilty 137 km
- Clonakilty → near Schull 122 km
- near Schull → Castletownbere 122 km
- Castletownbere → near Killorglin 122 km
- near Killorglin → Killorglin 115 km
- Killorglin → Tralee 109 km
- Tralee → Limerick 120 km
- Limerick → Kilrush 110 km
- Kilrush → Lehinch 120 km
- Lehinch → Galway 127 km
- Galway → near Clifden 121 km
- near Clifden → Westport 109 km
- Westport → near Knocknalower 122 km
- near Knocknalower → near Ballina 121 km
- near Ballina → Ballyshannon 137 km
- Ballyshannon → Gweedore 121 km
- Gweedore → Londonderry County Borough 139 km
- Londonderry County Borough → Cookstown 112 km
- Cookstown → Belfast 96 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.