May 4 is generally a great time to visit Galway. While there is a slight chance of rain (23%), showers are usually brief. Expect comfortable 14°C weather. Note: May 4 is May Day in Galway, so expect special events, closures, and festive atmosphere.
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Essential Travel Info for Galway
Currency
EUR
€ Euro
Language
English
+1 more
Driving
Left side
Connect
As of 2025, Galway has 5G with all Irish...
Safety
Very High Safety
GPI: 1.288
Galway Weather Forecast for May 4
"Mild & Comfortable. Expect average highs of 14.1°C. 23% chance of rain."
What to Wear in Galway in May
Based on historical data for May 4, Galway typically experiences temperatures between 7.4°C and 14.1°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (23% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Galway
Smart Suitcase
- Light Jacket
- Long Pants
Average High
14.1°C
Daytime Peak
Average Low
7.4°C
Nighttime Low
Feels Like
13.7°C
🌤️ Feels accurate
Rain Chance
23%
Avg 1.6mm if it rains
Cloud Cover
73%
Light drizzle
Pressure
1015.4 hPa
High volatility
Galway Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 100% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
05:00 - 10:00
16:00 - 21:00
Type I-II
🔴 24 min to burn
Type III-IV
🟡 36 min to burn
Type V-VI
🟢 60 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
10.1°C
Pleasant
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
❄️ Cold Water Hazard
Travel & Logistics Insights
Local Calendar
Holiday
May Day
Flight Traffic
N/A
0/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
N/A
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Galway
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:58
☀️ Noon
13:34
🌇 Sunset
21:10
⏱️ Daylight
15h 12m
Wind Speed
20.9 km/h
Moderate wind
Sunshine
8.8 hrs
Direct Sun (Cloud-free)
Humidity
77%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Galway
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Galway
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Rapid pressure changes detected. High risk for meteosensitive people.
Weather unlikely to affect joint pain.
Fish are active due to pressure changes.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Galway on May 4 averages 14.1°C with a 23% precipitation probability. Wedding/Outdoor Event Score: 87/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Galway Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (May 4) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Galway Worth Visiting on May 4?
Planning a trip to Galway on May 4? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 14.1°C with a 23% historical precipitation risk.
🎉 Local Event: The date coincides with May Day, which may influence local business hours and event availability.
💉 Health Advisory: 6 vaccinations are recommended for Ireland, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 12.6°C (polar plunge). Wave conditions are generally fun waves with heights around 0.53m.
📊 Historical Extremes: The hottest May 4 recorded in the last 30 years saw temperatures hit 15.6°C in 2017, while the coldest dropped to 3.2°C in 2019.