Autumn Cycling in Ireland: Quiet Roads in September and October
September and October bring emptier roads and softer light. Ten routes from the Great Western Greenway to the Ring of Kerry, plus what to pack.
Introduction
September in Ireland averages 13 °C and thirteen days of rain. Written down that sounds unpromising. In practice the showers are usually brief, the temperature is about right for a light jacket and gloves, and the secondary roads are far quieter than they were in July. October is cooler, darker and wetter, and still worth riding.
What you give up is daylight. Plan around that and autumn is the best cycling season Ireland has.
Why Autumn Is the Ideal Time for Irish Cycling
| Factor | September | October | Typical Impact on Cycling |
|---|---|---|---|
| Average high temperature | 13 °C (55 °F) | 13 °C (55 °F) | Comfortable layers, no overheating |
| Average low temperature | 9 °C (48 °F) | 6 °C (43 °F) | Need a warm base layer for early mornings |
| Daylight | Sunrise 06:41, Sunset 20:14 (≈13.5 h) | Sunrise 07:33, Sunset 19:09 (≈11.5 h) | Plenty of daylight for long rides, but plan early starts in October |
| Rainfall | ~70 mm, 13 days of rain | ~80 mm, 15 days of rain | Pack waterproofs; rain showers are often brief |
| Tourist crowds | Shoulder season, lower accommodation prices | Still shoulder season, fewer day-trippers | Roads are quieter, especially on secondary routes |
The temperature swing is small, so a lightweight jacket and gloves will do and the heavy winter kit can stay at home. The sun also sits lower, so the good light just after sunrise and before sunset lasts longer. Useful if you stop to take photographs.
Top Autumn Cycling Routes for Golden Colours and Quiet Roads
Ten routes, across the difficulty range, all rideable in September and October. Check the forecast the night before. In autumn that is not a formality.
1. Great Western Greenway: County Mayo (42 km, Easy-Moderate)
Why it works in autumn: The former railway line follows the shoreline of Clew Bay, with open sea views and fields of amber grass. Traffic-free throughout, which is why it suits families and anyone who would rather not think about cars.
2. Waterford Greenway: County Waterford (46 km, Easy)
Autumn appeal: Rolling vineyards and stone-built villages turn gold as the oak and beech trees shed leaves. The viaducts and tunnels provide dramatic backdrops for sunrise rides.
3. The Burren Loop: County Clare (65 km, Moderate)
What to expect: The limestone pavement of the Burrun is dotted with wildflowers that burst into colour after the first frosts. Expect occasional headwinds, but the low-traffic backroads keep you safe.
4. Glendalough & Wicklow Mountains: County Wicklow (Variable, Moderate-Hard)
Golden highlights: The forested slopes around the lakes turn deep russet and copper. Early October often brings a “clear-after-rain” sky, ideal for long climbs and rewarding descents.
5. Aran Islands: County Galway (10-15 km per island, Easy)
Quiet roads: Almost no cars, flat riding between stone walls, ancient forts to stop at. Autumn light is soft and diffuse, which suits the cliffs.
6. Lough Gill Loop: County Sligo (40 km, Moderate)
Poetic scenery: The lake mirrors the orange-tinted canopy, while the famed “Innisfree” island adds a literary touch. Traffic is minimal, especially after the school term ends in late September.
7. The Ring of Kerry: County Kerry (179 km, Difficult)
Seasonal tip: While the full loop can be busy in summer, October sees a dramatic drop in tourist cars. The route’s coastal cliffs, especially around Cahersiveen, are framed by golden sea-spray mist.
8. The Causeway Coast: County Antrim (Northern Ireland) (40-100 km, Moderate)
Autumn colours: The Giant’s Causeway and surrounding dunes are set against a backdrop of ochre-brown heather. The road is generally quiet after the peak summer holiday period.
9. Great Southern Trail: Limerick/Kerry (85 km, Easy-Moderate)
The quiet one: A former railway line through farmland, over old stone bridges. Fewer cyclists know it than the Waterford or Great Western greenways, and it shows.
10. Wild Atlantic Way: Select Sections (Variable, All Levels)
Tailor-made: Pick a 60-km stretch such as Dingle Peninsula or the Connemara Loop. October’s “soft light” makes the Atlantic cliffs glisten with gold-tinged sea spray, and traffic is sparse on the side-roads.
Quick Route-Choosing Checklist
- Desired distance: 30-50 km for a day ride, 80-180 km for multi-day adventures.
- Difficulty: Greenways are flat; mountain loops need good fitness.
- Scenery focus: Coastal cliffs, woodland, lakes, or historic sites.
- Accommodation: Look for B&Bs or guesthouses within 15 km of the start/end point.
Practical Tips for Autumn Cycling in Ireland
1. Dress for Changeable Weather
- Base layer: Merino wool or technical synthetic to wick sweat.
- Mid-layer: Fleece or lightweight insulated jacket (e.g., 3-mm PrimaLoft).
- Outer layer: Breathable waterproof shell (Gore-Tex or similar), essential for sudden showers.
- Gloves & Headwear: Wind-proof gloves and a thin beanie or balaclava for early mornings.
2. Light and Visibility
- Front light: Minimum 200 lumens; daylight fades quickly in October.
- Rear light: 80-100 lumens, preferably with a flashing mode.
- Reflective gear: Add a reflective vest or ankle bands for added safety on quieter roads where drivers may be less accustomed to cyclists.
3. Bike Maintenance
- Tyre pressure: Slightly lower pressure (by ~2 psi) improves grip on wet leaves and occasional puddles.
- Brakes: Check disc or rim brake pads; wet conditions increase stopping distance.
- Chain: Clean and lube after each rainy ride to prevent rust.
4. Navigation and Daylight Planning
- Offline maps: Download the route on a GPS device or phone (e.g., Komoot, Ride with GPS) before heading into areas with limited signal.
- Sunrise/Sunset: Aim to start rides an hour after sunrise; plan to finish at least an hour before sunset to allow for unexpected delays.
5. Food, Hydration, and Safety
- Hydration: Carry at least 1 L of water for a 60-km ride; refill at cafés in villages.
- Snacks: Energy bars, fruit, and a small sandwich; Irish pubs often serve hearty soups that are perfect for a warm break.
- Emergency kit: Mini-pump, spare tube, multi-tool, and a portable power bank for phone charging.
6. Accommodation and Local Amenities
- Booking: September sees good availability; October can be tighter around popular festivals (e.g., Galway Film Festival). Book B&Bs or farm stays early.
- Bike rentals: If you’re travelling light, many towns (Westport, Dingle, Killarney) offer quality road-bike rentals with drop-off options.
- Cyclist-friendly pubs: Look for “bike racks” in pubs; many establishments in the West of Ireland have dedicated spaces.
Highlighted Autumn Cycling Experiences
A. “Golden Loop”: Killarney to Ring of Kerry
Combine the Great Southern Trail (30 km) with a short section of the Ring of Kerry. Ride early September to catch the sunrise over the Lakes of Killarney, then follow the coastal road as the hills turn amber. Finish with a hearty Irish stew at a local pub in Cahersiveen.
B. “Harvest Ride”: Waterford Greenway to Dungarvan
Mid-October, the Greenway’s viaducts frame fields of golden barley ready for harvest. Stop at a farm shop for fresh apple juice and a slice of Irish soda bread before continuing to the historic port of Dungarvan.
C. “Misty Morning”: Glendalough Loop
Set out before 07:30 in early October; the mist rolls over the Wicklow Mountains, turning the forest canopy into a silvery-gold haze. The route offers several pull-outs for photography, especially near the Upper Lake.
Environmental Considerations
Cycling is low-impact, but autumn adds a few things to watch:
- Leave no trace: Pack out all litter, especially after picnics in remote areas.
- Respect wildlife: Deer and foxes are more active in the cooler months; keep a safe distance.
- Stay on designated paths: Many greenways are built on former railway lines to protect fragile habitats.
Frequently Asked Questions
Q: Do I need a bike insurance for an autumn trip?
A: Not mandatory, but travel insurance that covers bike theft and accidental damage is advisable, especially when staying in B&Bs that may not have secure bike storage.
Q: How much daylight can I expect in late October?
A: Around 10-11 hours of daylight (sunrise ~07:45, sunset ~18:45). Plan rides to finish by 17:00 to allow a buffer for weather delays.
Q: Are there any festivals that might affect traffic?
A: The Galway Film Festival (late July) is out of season, but the Dingle Food Festival (mid-October) can increase local traffic. Check local event calendars before finalising routes.
Q: Can I combine cycling with other activities?
A: Absolutely. Many routes pass near historic sites, castles, and walking trails, allowing a mixed-activity day (e.g., bike to a castle, then take a short hike).
Planning Your Autumn Cycling Holiday
- Pick your dates: Mid-September to early October offers the best balance of colour and daylight.
- Choose routes: Use the list above to match distance and scenery preferences.
- Book accommodation: Reserve early for popular areas like Killarney, Galway, and the Ring of Kerry.
- Arrange bike transport: If flying, check airline bike policies; many Irish airports have bike-friendly transport services.
- Pack smart: Follow the gear checklist; remember a lightweight rain cover for your panniers.
- Download maps: Store offline versions of the routes on a GPS device.
- Leave slack in the day: Stop properly for lunch, and allow time for a shower to pass through.
Conclusion
September and October give you cool riding and quiet roads in exchange for short days. The clothing list matters more than it does in summer, and so does the light: look up sunset for the week you are going and work backwards from it. Book Killarney, Galway and the Ring of Kerry early, since October tightens up around the local festivals.
The rest is ordinary riding. Take waterproofs, take lights, and do not plan the day down to the last hour.