Cahersiveen Weather in August
Cahersiveen in August averages 18°C (64°F) during the day and 13°C (55°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Cahersiveen in August
You can expect rain on roughly 21 days based on historical data, averaging 117 mm (4.6 in) for the month. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Cahersiveen in August
In August, expect pleasant temperatures in Cahersiveen, with highs of 18°C (64°F) and lows of 13°C (55°F) at night. Conditions are often most pleasant around the middle of the day. With lows of 13°C (55°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. On average, it is the month with the highest temperature of the year.
Sunshine in Cahersiveen in August
The area experiences a moderate amount of sunshine, with approximately 139 hours of sunlight expected. This means a decent mix of sun and overcast.
Wind Speed in Cahersiveen in August
August sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.
Average water temperature in August
The water temperature is 15°C (59°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July and August typically offer the best weather for Cahersiveen.
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 Cahersiveen's climate page.
Cahersiveen Temperature in August
Min Temperature
13°C (55°F)
Max Temperature
18°C (64°F)
Water Temperature
15°C (59°F) *
Chance of Rain
69%
Precipitation
117 mm (4.6 in)
Rainy days
21 days
Humidity
78% *
Windspeed
4 m/s (8 knots) *
Sunshine
139 hours *
Percentage Sunshine
33% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cahersiveen typically stay consistent throughout August, with daily highs averaging around 18°C (64°F). Nights are cool, with lows around 13°C (55°F).
Average temperatures in August
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 August
Historical weather for Cahersiveen in August
Browse day-by-day weather records for Cahersiveen spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cahersiveen historical weather extremes in August
Based on weather observations in Cahersiveen between 1976 and 2025, these are the recorded extremes during August.
- The hottest August day on record in Cahersiveen reached 28°C (82°F) (August 17, 1995).
- Cahersiveen experienced its chilliest August day on August 28, 1986, reaching only 13°C (55°F).
- Cahersiveen registered its coldest August night on August 31, 1986, with temperatures dropping to 4°C (39°F).
Best Places in Ireland in August
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in August →
perfect weather
pleasant
tolerable
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What to Wear in Cahersiveen in August
For Cahersiveen in August, 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. The water temperature sits at about 15°C (59°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Cahersiveen in August
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 Cahersiveen's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Cahersiveen climate overview or explore weather in Ireland.
