EuroVelo 1 - Atlantic Coast Route - part Ireland, stage 16: near Knocknalower → near Ballina
On stage 16 (near Knocknalower → near Ballina, 121 km) the best month is September: 66% of days were dry with highs of 10–30 °C, and riding near Knocknalower → near Ballina meant an average tailwind of 5.7 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 | 12% | 40% | 122 | 8 °C | 0% | 77% | 7.9 † |
| February | 13% | 39% | 108 | 8 °C | 0% | 76% | 9.7 † |
| March | 23% | 37% | 97 | 9 °C | 0% | 66% | 11.7 |
| April | 48% | 31% | 75 | 11 °C | 0% | 35% | 14.0 |
| May | 61% | 35% | 90 | 13 °C | 0% | 8% | 16.0 |
| June | 65% | 35% | 95 | 15 °C | 0% | 0% | 17.2 |
| July | 57% | 43% | 111 | 16 °C | 0% | 0% | 16.7 |
| August | 58% | 42% | 121 | 16 °C | 0% | 0% | 14.9 |
| September | 66% | 34% | 108 | 15 °C | 0% | 0% | 12.6 |
| October | 57% | 40% | 134 | 13 °C | 0% | 5% | 10.4 † |
| November | 31% | 43% | 138 | 10 °C | 0% | 45% | 8.4 † |
| December | 13% | 45% | 141 | 9 °C | 0% | 68% | 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 Knocknalower → near Ballina, km/h | Headwind > 15 km/h, near Knocknalower → near Ballina | Headwind > 15 km/h, near Ballina → near Knocknalower | Better way |
|---|---|---|---|---|
| January | +6.7 | 12% | 33% | near Knocknalower → near Ballina |
| February | +5.1 | 15% | 31% | near Knocknalower → near Ballina |
| March | +3.7 | 15% | 28% | near Knocknalower → near Ballina |
| April | +1.8 | 15% | 22% | either |
| May | +3.6 | 12% | 25% | near Knocknalower → near Ballina |
| June | +4.6 | 9% | 26% | near Knocknalower → near Ballina |
| July | +6.4 | 6% | 27% | near Knocknalower → near Ballina |
| August | +7.3 | 7% | 32% | near Knocknalower → near Ballina |
| September | +5.7 | 9% | 29% | near Knocknalower → near Ballina |
| October | +3.9 | 15% | 28% | near Knocknalower → near Ballina |
| November | +5.3 | 13% | 31% | near Knocknalower → near Ballina |
| December | +6.4 | 13% | 33% | near Knocknalower → near Ballina |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 1,808–1,834 | NE | +9.2 |
| 1,834–1,859 | E | +8.4 |
| 1,859–1,886 | SE | +0.2 |
| 1,886–1,911 | E | +8.1 |
| 1,911–1,930 | SE | +1.9 |
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.