Oughterard Weather in September
September in Oughterard typically sees daytime highs of 18°C (64°F) and nighttime lows of 10°C (50°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Oughterard in September
Looking at the last 30 years, the data shows about 20 days with rain, averaging 97 mm (3.8 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 Oughterard in September
In September, Oughterard gets moderate temperatures, with highs of 18°C (64°F). Nights cool to around 10°C (50°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Oughterard in September
The city usually sees around 93 hours of sunlight, indicating fewer sunny days.If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
Oughterard Temperature in September
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Oughterard Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Oughterard - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Oughterard typically stay consistent throughout September, with daily highs averaging around 18°C (64°F). Nights are cool, with lows typically ranging from 9°C (48°F) to 11°C (52°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 Oughterard in September
Browse day-by-day weather records for Oughterard spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Oughterard historical weather extremes in September
According to our 49 years of weather records for Oughterard, the following extremes were recorded between 1976 and 2025.
- Oughterard recorded its highest September temperature of 26°C (79°F) on September 7, 2023.
- The lowest daytime temperature in September was 10°C (50°F), recorded on September 24, 2012.
- Oughterard registered its coldest September night on September 27, 1993, with temperatures dropping to 0°C (32°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 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 Oughterard in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.
What To Do in Oughterard in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming4/10 -
Cycling6/10 -
Walking6/10 -
Camping8/10 -
Outdoor sports9/10
Oughterard 3-Day Forecast
Temperature Rainfall Sunshine Humidity
See the full Oughterard 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) 
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