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Limerick Weather in September
With daytime temperatures of 18°C (64°F) and nighttime lows of 10°C (50°F), September in Limerick brings moderate temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 84 mm (3.3 in) falls on average.
Rainfall in Limerick in September
Climate statistics over the past 30 years suggest around 18 days of rain, with 84 mm (3.3 in) average for the month. Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.
Temperature in Limerick in September
If you're visiting Limerick in September, expect highs of 18°C (64°F) and overnight lows around 10°C (50°F). Conditions are often most pleasant around the middle of the day. With overnight lows of 10°C (50°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Limerick in September
The month brings about 116 hours of sunlight, offering a comfortable mix of sun and overcast.Should you favor a climate that's both dry and comfortably warm, July typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Limerick Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
18°C (64°F)
Chance of Rain
60%
Precipitation
84 mm (3.3 in)
Rainy days
18 days
Humidity
70%
Sunshine
116 hours
Percentage Sunshine
Limerick Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Limerick - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Limerick 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 12°C (54°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 Limerick in September
Browse day-by-day weather records for Limerick spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Limerick historical weather extremes in September
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Limerick.
- The warmest day in September was on September 7, 2021, with a maximum of 28°C (82°F).
- Limerick experienced its chilliest September day on September 20, 2018, reaching only 10°C (50°F).
- 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 Limerick in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Sunglasses could come in handy during the sunnier parts of your trip.
What To Do in Limerick 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 -
Camping4/10 -
Outdoor sports9/10
Limerick 3-Day Forecast
More climate data for Limerick
Temperature Rainfall Sunshine Humidity
See the full Limerick 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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