Belfast Weather in May
With daytime temperatures of 28°C (82°F) and nighttime lows of 25°C (77°F), May in Belfast brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 143 mm (5.6 in) falls on average.
Rainfall in Belfast in May
Expect around 11 days of rain based on historical data, with 143 mm (5.6 in) average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Belfast in May
May in Belfast brings high temperatures, with highs of 28°C (82°F) and nights around 25°C (77°F). This kind of day-to-night contrast is typical for this time of year. With lows around 25°C (77°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in Belfast in May
Expect sunny days throughout the month, with an estimated 257 hours of sunshine. This makes it a pleasant time to visit Belfast.Should you favor a climate that's both dry and comfortably warm, January, February, March, April and December typically offer the most agreeable 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 Jamaica, check out our Belfast's climate page.
Belfast Temperature in May
Min Temperature
25°C (77°F)
Max Temperature
28°C (82°F)
Chance of Rain
37%
Precipitation
143 mm (5.6 in)
Rainy days
11 days
Humidity
73% *
Sunshine
257 hours *
Percentage Sunshine
*
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Belfast typically stay consistent throughout May, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in May
Daily Historical Precipitation
49-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 Belfast in May
Browse day-by-day weather records for Belfast spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Belfast historical weather extremes in May
Based on 28 years of weather observations in Belfast between 1997 and 2025, these are the recorded extremes.
- The hottest May day on record in Belfast reached 34°C (93°F) (May 12, 2012).
- On May 28, 2010, Belfast saw its coldest May day with temperatures maxing out at 26°C (79°F).
- The coldest night in May in Belfast was on May 7, 2018, with a minimum of 22°C (72°F).
Best Places in Jamaica in May
Find out more about the weather in Jamaica and which places have the best travel conditions in this month. See all of Jamaica in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Belfast in May
Warm weather calls for comfortable, breathable clothing in May. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Belfast 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 Jamaica, check out our Belfast's climate page.
Temperature Rainfall Sunshine Humidity
See the full Belfast climate overview or explore weather in Jamaica.
