Cahersiveen Weather in May
During May, Cahersiveen experiences moderate daytime temperatures of 15°C (59°F) and cooler nights around 9°C (48°F). Expect quite a bit of rainfall. Around 100 mm (3.9 in) is typical.
Rainfall in Cahersiveen in May
This month experiences about 19 days of rain according to historical data, averaging 100 mm (3.9 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Cahersiveen in May
Daytime highs in Cahersiveen in May reach 15°C (59°F), with nights around 9°C (48°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Cahersiveen in May
The area experiences a moderate amount of sunshine, with approximately 180 hours of sunlight expected. This means a decent mix of sun and overcast.
Wind Speed in Cahersiveen 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
With water temperatures around 11°C (52°F), swimming isn't really an option for most visitors. The cold sets in quickly and a wetsuit won't fully solve it.If you prefer dry days with pleasant temperatures, June, July and August typically offer 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 Cahersiveen's climate page.
Cahersiveen Temperature in May
Min Temperature
9°C (48°F)
Max Temperature
15°C (59°F)
Water Temperature
11°C (52°F) *
Chance of Rain
62%
Precipitation
100 mm (3.9 in)
Rainy days
19 days
Humidity
73% *
Windspeed
5 m/s (10 knots) *
Sunshine
180 hours *
Percentage Sunshine
42% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cahersiveen typically stay consistent throughout May, with daily highs averaging around 15°C (59°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 10°C (50°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 Cahersiveen in May
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 May
The extremes listed below come from historical weather data collected in Cahersiveen from 1976 through 2026.
- The hottest May day on record in Cahersiveen reached 31°C (88°F) (May 26, 2026).
- The coldest May day was on May 1, 1996, with a maximum of 7°C (45°F).
- Nighttime temperatures dropped to 1°C (34°F) on May 7, 2021, marking the coldest May night on record.
- Peak precipitation in May occurred on May 6, 1978, when 70 mm (2.8 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 →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Cahersiveen in May
Pack for changing conditions in Cahersiveen in May. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. 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. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Cahersiveen 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 Cahersiveen's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Cahersiveen climate overview or explore weather in Ireland.
