Rosslare Weather in August
August in Rosslare brings moderate temperatures around 18°C (64°F) during the day, dropping to 14°C (57°F) at night, with quite a bit of rainfall expected, averaging around 77 mm (3 in) for the month.
Rainfall in Rosslare in August
Records from the past 30 years suggest around 15 days of rain, with 77 mm (3 in) average for the month. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Rosslare in August
Temperatures in Rosslare in August top out at 18°C (64°F) and drop to 14°C (57°F) overnight. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows of 14°C (57°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 has the peak temperatures of the year.
Sunshine in Rosslare in August
Expect sunny days throughout the month, with an estimated 190 hours of sunshine. This makes it a pleasant time to visit Rosslare.
Wind Speed in Rosslare in August
Wind speeds average 5 m/s (10 knots) during August. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.
Average water temperature in August
At 15°C (59°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.If your ideal day consists of dry skies and pleasant temperatures, August typically offers the best circumstances for Rosslare.
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 Rosslare's climate page.
Rosslare Temperature in August
Min Temperature
14°C (57°F)
Max Temperature
18°C (64°F)
Water Temperature
15°C (59°F)
Chance of Rain
48%
Precipitation
77 mm (3 in)
Rainy days
15 days
Humidity
76%
Windspeed
5 m/s (10 knots)
Sunshine
190 hours
Percentage Sunshine
41%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Rosslare 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
Historical weather for Rosslare in August
Browse day-by-day weather records for Rosslare spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Rosslare historical weather extremes in August
According to our 49 years of weather records for Rosslare, the following extremes were recorded between 1976 and 2025.
- Rosslare recorded its highest August temperature of 26°C (79°F) on August 12, 2024.
- The coldest August day was on August 26, 1986, with a maximum of 13°C (55°F).
- The coldest night in August in Rosslare was on August 29, 2011, with a minimum of 7°C (45°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
unpleasant
poor
What to Wear in Rosslare in August
Pleasant temperatures in August 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. Rain gear is recommended, you can expect wet weather on multiple days. With water temperatures around 15°C (59°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Rosslare 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 Rosslare's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Rosslare climate overview or explore weather in Ireland.
