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Clifden Weather in May
Thinking of visiting Clifden in May? Expect moderate temperatures reaching 15°C (59°F) during the day, dropping to 9°C (48°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Clifden in May
Looking at the last 30 years, the data shows about 19 days with rain, averaging 94 mm (3.7 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Clifden in May
Daytime highs in Clifden in May reach 15°C (59°F), with nights around 9°C (48°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. 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 Clifden in May
The month brings about 157 hours of sunlight, offering a comfortable mix of sun and overcast.If you're inclined towards comfortable temperatures and drier conditions, May is a good time to visit Clifden.
Clifden Temperature in May
Min Temperature
9°C (48°F)
Max Temperature
15°C (59°F)
Chance of Rain
62%
Precipitation
94 mm (3.7 in)
Rainy days
19 days
Humidity
73% *
Sunshine
157 hours *
Percentage Sunshine
39% *
* Data from: Claremorris, Ireland (72 KM, 45 Miles).
Clifden Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Clifden - and find the best time to visit.
Daily Historical Temperatures
47-year average (1976-2025)
Based on our historical records, temperatures in Clifden 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
47-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather records for Clifden in May
Browse day-by-day weather records for Clifden spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Clifden historical weather extremes in May
Based on 27 years of weather observations (1999-2026), these are the most extreme conditions recorded in Clifden.
- Clifden recorded its highest May temperature of 27°C (81°F) on May 27, 2026.
- The coldest May day was on May 21, 2006, with a maximum of 7°C (45°F).
- Nighttime temperatures dropped to 0°C (32°F) on May 8, 2004, marking the coldest May night on record.
- The wettest day in May Clifden was on May 25, 2005 with 38 mm (1.5 in) of precipitation.
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
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Clifden 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. Expect heavy rainfall, so bring good rain protection and waterproof bags. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Clifden in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming5/10 -
Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports9/10
Clifden 3-Day Forecast
More climate data for Clifden
Temperature Rainfall Sunshine Humidity
See the full Clifden climate overview or explore weather in Ireland.
Popular in May
Where to go in May - average daytime high across popular destinations.
Galway
16°C (61°F) Kilkenny
16°C (61°F) Westport16°C (61°F) Kenmare
16°C (61°F) Killarney16°C (61°F) Dublin16°C (61°F) Cork
15°C (59°F) Doolin15°C (59°F) Bucket list
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