Dundalk Weather in August
August in Dundalk averages 19°C (66°F) during the day and 12°C (54°F) at night. It is the wettest month of the year, with 89 mm (3.5 in) of rainfall on average, so waterproof gear is a must.
Rainfall in Dundalk in August
With this being the wettest month, keeping an umbrella on hand might save you from getting wet from a sudden shower. Past climate data indicates that roughly 17 days will see rain, totalling around 89 mm (3.5 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Dundalk in August
In August, Dundalk gets pleasant temperatures, with highs of 19°C (66°F). Nights cool to around 12°C (54°F). August is part of the summer season. Even when the weather is stable, mornings and evenings can still feel distinctly cool. 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 Dundalk in August
The area enjoys a balanced 157 hours of sunlight, ensuring it's neither too overcast nor too sunny.Should you favor a climate that's both dry and comfortably warm, July typically offers 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 Dundalk's climate page.
Dundalk Temperature in August
Min Temperature
12°C (54°F)
Max Temperature
19°C (66°F)
Chance of Rain
58%
Precipitation
89 mm (3.5 in)
Rainy days
17 days
Humidity
69% *
Sunshine
157 hours *
Percentage Sunshine
35% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Dundalk typically stay consistent throughout August, with daily highs averaging around 19°C (66°F). Nights are cool, with lows around 11°C (52°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 Dundalk in August
Browse day-by-day weather records for Dundalk spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Dundalk historical weather extremes in August
Our historical data for Dundalk spans 1976 to 2025, revealing these weather extremes.
- The hottest August day on record in Dundalk reached 27°C (81°F) (August 2, 1995).
- The coldest August day was on August 25, 1986, with a maximum of 11°C (52°F).
- Dundalk registered its coldest August night on August 24, 2014, with temperatures dropping to 5°C (41°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
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tolerable
unpleasant
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What to Wear in Dundalk in August
Comfortable temperatures call for an easy wardrobe in August. 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 Dundalk 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 Dundalk's climate page.
Temperature Rainfall Sunshine Humidity
See the full Dundalk climate overview or explore weather in Ireland.
