Westport Weather in May
With daytime temperatures of 16°C (61°F) and nighttime lows of 8°C (46°F), May in Westport brings moderate temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 98 mm (3.9 in) falls on average.
Rainfall in Westport in May
This month experiences about 19 days of rain according to historical data, averaging 98 mm (3.9 in). Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Westport in May
If you're visiting Westport in May, expect highs of 16°C (61°F) and overnight lows around 8°C (46°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Westport in May
The month experiences a moderate amount of sunlight, with 157 hours of sunshine. This provides a nice balance between sunshine and clouds.If your ideal day consists of dry skies and pleasant temperatures, May, June, July and August typically offer the best circumstances for Westport.
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 Westport's climate page.
Westport Temperature in May
Min Temperature
8°C (46°F)
Max Temperature
16°C (61°F)
Chance of Rain
62%
Precipitation
98 mm (3.9 in)
Rainy days
19 days
Humidity
73% *
Sunshine
157 hours *
Percentage Sunshine
39% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Westport typically stay consistent throughout May, with daily highs averaging around 16°C (61°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 Westport in May
Browse day-by-day weather records for Westport spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Westport historical weather extremes in May
Our historical data for Westport spans 1976 to 2026, revealing these weather extremes.
- The hottest May day on record in Westport reached 25°C (77°F) (May 27, 2026).
- Westport experienced its chilliest May day on May 2, 1979, reaching only 6°C (43°F).
- Nighttime temperatures dropped to -1°C (30°F) on May 14, 1977, marking the coldest May night on record.
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 Westport 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 monthWhat To Do in Westport 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 Westport's climate page.
Temperature Rainfall Sunshine Humidity
See the full Westport climate overview or explore weather in Ireland.
