Early autumn · Weather & things to do
Connemara in September
Connemara edges cooler than August, with highs of 60°F (16°C), lows of 54°F (12°C) and about 4.4 in (112 mm) of rain.
At 67/100 for comfort (4th of 12), it's one of the best months to visit.
- Avg high
- 60°F (16°C)
- Avg low
- 54°F (12°C)
- Rain
- 4.4 in (112 mm)
- Humidity
- 86%
- Cloud cover
- 82%
- Daylight
- ~12 h 24 min
- Comfort score
- 67/100 · Good
What September feels like
Highs near 60°F (16°C) make for comfortable sightseeing weather.
After dark, temperatures fall to about 54°F (12°C).
Some rain is likely, about 4.4 in (112 mm) in the month, so pack for a shower or two.
Expect plenty of overcast days, with cloud cover near 82%.
It's breezy, with average winds near 12 mph (5.3 m/s) at ground level.
Plan around September
September is one of Connemara's best months on the climate data.
- Last of the best-scoring months: by October, the score drops to 58/100.
- Comfort holds steady from August (68 → 67/100).
- September sits inside the May – Sep window our Dublin to the Wild Atlantic Way route recommends.
What to pack for September
- A warm layer for eveningslows near 54°F
- Packable rain jacket or umbrellaabout 4.4 in of rain
- Windproof shellaverage wind 12 mph
- Comfortable walking shoesmost picks involve some walking
What to do in Connemara in September
September is good outdoor weather here, so these picks lean toward the open air.
Connemara National Park
Moorland park with free trails; Diamond Hill gives views to the islands.
Why now September scores 67/100 for comfort, good conditions for being outside.
Derrigimlagh Bog
Bog loop walk past the 1919 Alcock and Brown landing site and Marconi station ruins.
Why now Highs near 60°F and 4.4 in of monthly rain make this an easy outdoor pick.
Sky Road
Loop drive west of Clifden on high ground over Atlantic inlets and islands.
Guys Seafood Bar
Busy pub kitchen for chowder, crab claws and mussels.
Kylemore Abbey
Lakeside castle-style abbey with a Victorian walled garden.
Why now One to do outside while the weather is on your side.
Nearby in September
- Doolin & the Cliffs of Moher in September~42 mi · highs 61°F, 4.1 in rain · similar daytime temperatures, about as wet
- Galway in September~42 mi · highs 63°F, 3.4 in rain · 2°C (3°F) warmer by day, drier
- Dublin in September~155 mi · highs 61°F, 3.0 in rain · similar daytime temperatures, drier
- Fort William in September~301 mi · highs 59°F, 6.0 in rain · similar daytime temperatures, wetter
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Connemara in September: quick answers
Is September a good time to visit Connemara?
Yes. On the climate data it's one of the best months, scoring 67/100. Expect highs of 60°F (16°C) and 4.4 in (112 mm) of rain. September is inside the May – Sep window our Dublin to the Wild Atlantic Way route recommends.
How cold is Connemara in September?
Average highs are 60°F (16°C) and average lows 54°F (12°C), making it the 3rd-warmest month by daytime highs.
Does it rain a lot in Connemara in September?
Some: about 4.4 in (112 mm) of rain falls across September on average, the 5th-driest month of the year. The annual total is about 55.1 in (1400 mm).
What should I pack for Connemara in September?
Bring a warm layer for evenings (lows near 54°F), packable rain jacket or umbrella (about 4.4 in of rain), windproof shell (average wind 12 mph) and comfortable walking shoes (most picks involve some walking).
More on Connemara
Routes in season in September
- Dublin to the Wild Atlantic Way May – Sep
Planning Connemara in September?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.