Clonakilty Weather in September
September in Clonakilty brings moderate temperatures, with daytime highs of 17°C (63°F) and nights around 12°C (54°F). Quite a bit of rainfall is expected, around 91 mm (3.6 in), so pack an umbrella.
Rainfall in Clonakilty in September
You can expect rain on roughly 18 days based on historical data, averaging 91 mm (3.6 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Clonakilty in September
September in Clonakilty sees highs of 17°C (63°F) and lows of 12°C (54°F) overnight. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 12°C (54°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 Clonakilty in September
With about 128 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.Should you favor a climate that's both dry and comfortably warm, July and August typically offer 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.
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 Clonakilty's climate page.
Clonakilty Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
17°C (63°F)
Chance of Rain
59%
Precipitation
91 mm (3.6 in)
Rainy days
18 days
Humidity
75% *
Sunshine
128 hours *
Percentage Sunshine
33% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Clonakilty 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 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 Clonakilty in September
Browse day-by-day weather records for Clonakilty spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Clonakilty historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Clonakilty.
- The hottest September day on record in Clonakilty reached 25°C (77°F) (September 2, 1991).
- The coldest September day was on September 29, 1993, with a maximum of 10°C (50°F).
- The lowest overnight temperature recorded in September was 4°C (39°F) (September 25, 1992).
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
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What to Wear in Clonakilty 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 Clonakilty 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 Clonakilty's climate page.
Temperature Rainfall Sunshine Humidity
See the full Clonakilty climate overview or explore weather in Ireland.
