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Ballybunion Weather in September
September in Ballybunion averages 18°C (64°F) during the day and 11°C (52°F) at night. Quite a bit of rainfall is typical this month, with around 92 mm (3.6 in) on average. An umbrella is a good idea.
Rainfall in Ballybunion in September
Past climate data indicates that roughly 20 days will see rain, totalling around 92 mm (3.6 in) for the month. This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.
Temperature in Ballybunion in September
Ballybunion in September gets highs of 18°C (64°F) during the day and drops to 11°C (52°F) at night. September is known for being in the summer season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Ballybunion in September
The area enjoys a moderate level of sunlight, with around 116 hours. It's a good balance between sunny and cloudy days.If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Ballybunion.
Ballybunion Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
18°C (64°F)
Chance of Rain
65%
Precipitation
92 mm (3.6 in)
Rainy days
20 days
Humidity
70% *
Sunshine
116 hours *
Percentage Sunshine
*
* Data from: Limerick, Ireland (72 KM, 45 Miles).
Ballybunion Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ballybunion - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ballybunion typically stay consistent throughout September, with daily highs averaging around 18°C (64°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 Ballybunion in September
Browse day-by-day weather records for Ballybunion spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ballybunion historical weather extremes in September
Based on weather observations in Ballybunion between 1976 and 2026, these are the recorded extremes during September.
- The warmest day in September was on September 7, 2021, with a maximum of 27°C (81°F).
- Ballybunion experienced its chilliest September day on September 20, 2018, reaching only 11°C (52°F).
- The coldest night in September in Ballybunion was on September 22, 2025, with a minimum of 2°C (36°F).
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 Ballybunion in September
For Ballybunion 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. Sunglasses could come in handy during the sunnier parts of your trip.
What To Do in Ballybunion in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling6/10 -
Walking6/10 -
Camping8/10 -
Outdoor sports9/10
Ballybunion 3-Day Forecast
More climate data for Ballybunion
Temperature Rainfall Sunshine Humidity
See the full Ballybunion climate overview or explore weather in Ireland.
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Where to go in September - average daytime high across popular destinations.
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