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Lahinch Weather in September
Lahinch in September averages 17°C (63°F) during the day and 12°C (54°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Lahinch in September
The climate data from previous years indicates about 20 days of rain, averaging 122 mm (4.8 in) for the month. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Lahinch in September
Expect highs of 17°C (63°F) in Lahinch in September, with nights dropping to around 12°C (54°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 12°C (54°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Lahinch in September
You can expect a moderate amount of sunlight, with approximately 116 hours. This means a pleasant mix of sun and overcast.If you prefer dry days with pleasant temperatures, May, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Lahinch Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
17°C (63°F)
Chance of Rain
65%
Precipitation
122 mm (4.8 in)
Rainy days
20 days
Humidity
70% *
Sunshine
116 hours *
Percentage Sunshine
*
* Data from: Limerick, Ireland (57 KM, 35 Miles).
Lahinch Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Lahinch - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Lahinch typically stay consistent throughout September, with daily highs averaging around 17°C (63°F). Nights are cool, with lows typically ranging from 10°C (50°F) to 13°C (55°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Lahinch in September
Browse day-by-day weather records for Lahinch spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Lahinch historical weather extremes in September
Based on 50 years of weather observations in Lahinch between 1976 and 2026, these are the recorded extremes.
- On September 7, 2021, temperatures climbed to 27°C (81°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 11°C (52°F), recorded on September 25, 2024.
- Nighttime temperatures dropped to 2°C (36°F) on September 27, 2007, marking the coldest September night on record.
Best Places in Ireland in September
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Lahinch in September
For Lahinch in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Lahinch in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling5/10 -
Walking5/10 -
Camping6/10 -
Outdoor sports9/10
Lahinch 3-Day Forecast
More climate data for Lahinch
Temperature Rainfall Sunshine Humidity
See the full Lahinch climate overview or explore weather in Ireland.
Popular in September
Where to go in September - average daytime high across popular destinations.
Westport
17°C (63°F) Doolin17°C (63°F) Kilkenny
18°C (64°F) Cork18°C (64°F) Kenmare18°C (64°F) Killarney17°C (63°F) Galway18°C (64°F) Dublin18°C (64°F) Bucket list
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