Blarney Weather in May
May in Blarney sees daytime temperatures around 15°C (59°F) and lows of 8°C (46°F) at night. With around 75 mm (3 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Blarney in May
Climate statistics over the past 30 years suggest around 18 days of rain, with 75 mm (3 in) average for the month. This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.
Temperature in Blarney in May
May in Blarney brings typical temperatures with highs around 15°C (59°F) and lows of 8°C (46°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With lows around 8°C (46°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Blarney in May
The days are predominantly sunny, with an estimated total of around 194 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.
Wind Speed in Blarney in May
Wind speeds average 5 m/s (10 knots) during May. 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 May
The water sits at 11°C (52°F) this month, which is well below what most people consider swimmable. Wetsuits help, but expect it to still feel cold.For Blarney itself, June, July, August and September generally stand out with the best 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 Blarney's climate page.
Blarney Temperature in May
Min Temperature
8°C (46°F)
Max Temperature
15°C (59°F)
Water Temperature
11°C (52°F) *
Chance of Rain
58%
Precipitation
75 mm (3 in)
Rainy days
18 days
Humidity
71% *
Windspeed
5 m/s (10 knots) *
Sunshine
194 hours *
Percentage Sunshine
40% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Blarney typically stay consistent throughout May, with daily highs averaging around 15°C (59°F). Nights are cold, with lows typically ranging from 6°C (43°F) to 9°C (48°F).
Average temperatures in May
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 May
Historical weather for Blarney in May
Browse day-by-day weather records for Blarney spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Blarney historical weather extremes in May
Our historical data for Blarney spans 1976 to 2026, revealing these weather extremes.
- The warmest day in May was on May 26, 2026, with a maximum of 25°C (77°F).
- On May 6, 1997, Blarney saw its coldest May day with temperatures maxing out at 8°C (46°F).
- Blarney registered its coldest May night on May 5, 1982, with temperatures dropping to -1°C (30°F).
- Peak precipitation in May occurred on May 2, 2011, when 38 mm (1.5 in) of precipitation was measured.
Best Places in Ireland in May
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in May →
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What to Wear in Blarney in May
The weather can swing between comfortable and chilly in May, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days. With water temperatures around 11°C (52°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Blarney in May
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 Blarney's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Blarney climate overview or explore weather in Ireland.
