Is Belfast hot in May?
Days are typically cool at 15.4°C, while nights average 7.2°C.
United Kingdom · 1991–2020 normal
Belfast in
May.
Typical May weather in Belfast: 15.4°C by day, 7.2°C at night, 68 mm of rain over 12.3 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high15.4°C
Typical low7.2°C
Rain68 mm
Wet days12.3
In the year-round weather comparison, May scores 45 out of 100 (July leads the year at 64). Daylight is calculated as 16 h 02 from latitude 54.60°. Open-water sea temperature is 9.2°C (31 km from the place centre).
May at a glance
What is Belfast like in May?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 68 mm across about 12 wet days.
How much daylight is there?
There are about 16 h 02 between sunrise and sunset at mid-month, calculated from the place latitude.
Is May a good time to visit?
May ranks 5 of 12 in our weather comparison; July ranks first.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 2655984
- NOAA station
- UKE00105877 · STORMONT CASTLE
- Station distance
- 6.3 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Belfast is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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