Ennis Weather in September
Thinking of visiting Ennis in September? Expect moderate temperatures reaching 18°C (64°F) during the day, dropping to 10°C (50°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Ennis in September
Past climate data indicates that roughly 19 days will see rain, totalling around 90 mm (3.5 in) for the month. Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.
Temperature in Ennis in September
In September, expect moderate temperatures in Ennis, with highs of 18°C (64°F) and lows of 10°C (50°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows of 10°C (50°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Ennis in September
The area experiences a moderate amount of sunshine, with approximately 116 hours of sunlight expected. This means a decent mix of sun and overcast.If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Ennis.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Ennis's climate page.
Ennis Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
18°C (64°F)
Chance of Rain
62%
Precipitation
90 mm (3.5 in)
Rainy days
19 days
Humidity
70% *
Sunshine
116 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ennis 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 for Ennis in September
Browse day-by-day weather records for Ennis spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ennis historical weather extremes in September
Our historical data for Ennis spans 1976 to 2025, revealing these weather extremes.
- The warmest day in September was on September 7, 2021, with a maximum of 28°C (82°F).
- On September 20, 2018, Ennis saw its coldest September day with temperatures maxing out at 11°C (52°F).
- Ennis registered its coldest September night on September 27, 2007, with temperatures dropping to 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
What to Wear in Ennis 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 Ennis in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Ennis's climate page.
Temperature Rainfall Sunshine Humidity
See the full Ennis climate overview or explore weather in Ireland.
