Belfast in may: average Weather, Temperature and Climate
Weather in Belfast in may 2025
The weather in Belfast in the month of may comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout may
tolerable weather
Weather at 6am
49°F
Partly Cloudy
29% of time
22%
19%
14%
Weather at 12pm
56°F
Moderate rain at times
30% of time
24%
20%
17%
Weather at 6pm
56°F
Moderate rain at times
32% of time
22%
21%
18%
Weather at 3am
47°F
23%
23%
20%
16%
Evolution of daily average temperature and precipitation in Belfast in may
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Belfast in may.
The climate of Belfast in may is tolerable
the weather in Belfast in may is wet (with 3.8in of precipitation over 7 days). It should be noted an improvement from the previous month since in april it receives an average of 3.3in of precipitation over 5 days.
The climate is relatively fresh in this location may, but it is endurable when dressing cosy. The high seasonal norm is 58°F. The seasonal minimum is 49°F. Thus, the mean temperature average on this month of may in Belfast is 54°F. These temperatures are far removed from those records observed in Belfast in the month of may with a maximum record of 74°F in 2010 and a minimum record of 36°F in 2021. You can expect to have about 3 days with temperatures up to 65°F, or 10% of time.
Day length in Belfast in may is 16:05. The sun rises at 04:18 and sets at 20:23.
With a correct weather, may is okay (but not good) to go in this city.
Seasonal average climate and temperature of Belfast in may
Check below seasonal norms These statistics are set from the weather statements of the last years of the month of may.
| May | |||||
| Outside temperature | |||||
| Average temperature | 54°F | ||||
| Highest temperature | 58°F | ||||
| Lowest temperature | 49°F | ||||
| Highest record temperature | 74°F (2010) | ||||
| Lowest record temperature | 36°F (2021) | ||||
| Number of days at +65°F | 3 day(s) (10%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Sea temperature | |||||
| Average sea temperature | 50°F | ||||
| Lowest sea temperature | 49°F | ||||
| Highest sea temperature | 52°F | ||||
| Wind | |||||
| Wind speed | 21km/h | ||||
| Wind temperature | 45°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.8in | ||||
| Number of days with rainfall | 7 day(s) (21%) | ||||
| Record daily rainfall | 1.5in (2013) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 90% | ||||
| Visibility | 8.71km | ||||
| Cloud cover | 56% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 04:18 | ||||
| Time of sunset | 20:23 | ||||
| Length of day | 16:05 | ||||
| Our opinion about the weather in may | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last may?
Here is the day by day recorded weather in Belfast in may 2024:
45°F to 56°F
49°F to 58°F
50°F to 54°F
50°F to 54°F
50°F to 56°F
50°F to 56°F
47°F to 54°F
50°F to 61°F
50°F to 61°F
52°F to 65°F
50°F to 65°F
54°F to 61°F
50°F to 58°F
52°F to 56°F
52°F to 58°F
54°F to 63°F
52°F to 63°F
52°F to 63°F
50°F to 63°F
52°F to 63°F
52°F to 61°F
54°F to 58°F
47°F to 49°F
49°F to 52°F
50°F to 56°F
52°F to 54°F
47°F to 58°F
50°F to 59°F
50°F to 61°F
52°F to 59°F
50°F to 59°F
Map: other cities in Northern Ireland in may
Cities near Belfast:
| Castlereagh in may | tolerable weather |
| Newtownabbey in may | tolerable weather |
| Holywood in may | tolerable weather |
| Lisburn in may | tolerable weather |
| Carrickfergus in may | tolerable weather |
| Newtownards in may | tolerable weather |
| Ballyclare in may | tolerable weather |
| Bangor in may | tolerable weather |
| Antrim in may | tolerable weather |
| Millisle in may | tolerable weather |
| Donaghadee in may | tolerable weather |
| Kircubbin in may | tolerable weather |
Click over cities on the map for information about the weather in may.
Belfast
perfect weather
good
tolerable
bad
very bad
Weather data for Belfast in may:
Weather data for Belfast for may are derived from an average of the weather forecast since 2009 in Belfast. There is a margin of error and these forecasts are to be considered as general information only. The weather in Belfast can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Belfast.