North Ireland in may: average Weather, Temperature and Climate, Where to go?
Weather in Northern Ireland in may 2025
Below, you have access to the weather forecast for the month of may for most popular cities in North Ireland. These datas are statistics for may from weather reports for many years. The percentage indicates the probability of having the weather mentioned.
Average weather in may in Belfast
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%
Where to go in Northern Ireland in may?
Where to go in Northern Ireland in may: destination map
perfect weather
good
tolerable
bad
very bad
Where to go in each region in may?
| County Antrim (Belfast, Ballycastle (Causeway Coast), Larne...) | 56°F to 58°F | 2 à 8 days | 50°F to 52°F | tolerable weather |
| County Armagh (Armagh, Craigavon, Portadown...) | 58°F | 2 à 4 days | tolerable weather | |
| County Down (Donwpatrick, Bangor, Newry...) | 54°F to 58°F | 2 à 7 days | 50°F to 52°F | tolerable weather* |
| County Fermanagh (Enniskillen (Fermanagh)...) | 58°F | 6 days | bad weather | |
| County Londonderry (Derry (Londonderry), Coleraine, Limavady...) | 56°F to 58°F | 3 à 7 days | 52°F | tolerable weather |
| County Tyrone (Strabane, Omagh, Dungannon...) | 58°F | 3 à 4 days | tolerable weather |
Where should you go in Northern Ireland in may when it comes to the weather?
Remember:
The climate in Northern Ireland in may is tolerable across the board.
Good news: It is not perfect, however, the weather in North Ireland that month is quite good in Bangor (Strangford Lough district). I allows to savor sightseeing in this place. And even why not take a little time to take a nap at the pool under the sun!
If you do not go to spend your time in a lounger by the pool, but, for example to go sightseeing around, the city of Belfast have a OK but just acceptable weather for it in may. Finally, it is not advisable to travel to Enniskillen (Fermanagh), Derry (Londonderry), Donwpatrick, Armagh, Larne and Ballycastle (Causeway Coast) that month because the climate is unfavorable.
Climate in Northern Ireland in may
Climate in Belfast in may
In may, the mean temperature in Belfast is 54°F (maximum temperature is 58°F and minimum temperature is 49°F). The climate is relatively fresh in this city in the month of may, but it is livable by dressing hot. With 3.8in over 7 days, you risk getting wet slightly during your vacations. But this is reasonably and it is only of temporary showers.
With a correct climate, the month of may is okay (but not the best month) for traveling in Belfast in North Ireland.
| May | |||
| Average temperature | 54°F | ||
| Highest temperature | 58°F | ||
| Lowest temperature | 49°F | ||
| Sea temperature | 50°F | ||
| Rainfall | 3.8in | ||
| Number of days with rainfall | 7 day(s) (21%) | ||
| Humidity | 90% | ||
| Daily sunshine hours | 13 | ||
| Cloud cover | 56% | ||
| Length of day | 16:05 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Armagh in may
In the month of may, the mean temperature in Armagh is 52°F (maximum temperature is 58°F and minimum temperature is 47°F). The climate is fairly fresh in that locality in this month, but it is bearable by dressing cosy. With 2.6in over 4 days, you will experience some showers for your journey. But this is rather moderate and you will not be too bothered by it.
With a bad weather, the month of may is not recommended month to go in this city in North Ireland.
| May | |||
| Average temperature | 52°F | ||
| Highest temperature | 58°F | ||
| Lowest temperature | 47°F | ||
| Rainfall | 2.6in | ||
| Number of days with rainfall | 4 day(s) (12%) | ||
| Humidity | 94% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 65% | ||
| Length of day | 16:03 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Ballycastle (Causeway Coast) in may
In the month of may, maximum temperature is 56°F and minimum temperature is 49°F (for an average temperature of 52°F). The climate is fairly cool there in the month of may, but it is tolerable by dressing warm. With 4.6in over 8 days, you risk getting wet slightly during your holidays. But this is moderate and it is only of temporary showers.
With a bad weather, the month of may is not recommended month to go in that area in North Ireland.
| May | |||
| Average temperature | 52°F | ||
| Highest temperature | 56°F | ||
| Lowest temperature | 49°F | ||
| Sea temperature | 51°F | ||
| Rainfall | 4.6in | ||
| Number of days with rainfall | 8 day(s) (27%) | ||
| Humidity | 87% | ||
| Daily sunshine hours | 13 | ||
| Cloud cover | 53% | ||
| Length of day | 16:12 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Derry (Londonderry) in may
In may, maximum temperature is 58°F and minimum temperature is 47°F (for an average temperature of 52°F). The climate is relatively cool here in this month, but it is endurable by dressing hot. With 2.2in over 3 days, you risk getting wet slightly during your holidays. But this is moderate and it will not be continuous.
With a bad weather, may is not the best time to go in this city.
| May | |||
| Average temperature | 52°F | ||
| Highest temperature | 58°F | ||
| Lowest temperature | 47°F | ||
| Sea temperature | 52°F | ||
| Rainfall | 2.2in | ||
| Number of days with rainfall | 3 day(s) (9%) | ||
| Humidity | 91% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 62% | ||
| Length of day | 16:10 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Donwpatrick in may
In may, maximum temperature is 56°F and minimum temperature is 50°F (for an average temperature of 52°F). The climate is rather cold there in may, but it is liveable by dressing warm. With 2.4in over 4 days, you will experience some showers for your journey. But this is reasonably and it will not be continuous.
With a bad climate, the month of may is not the best time to go in that area.
| May | |||
| Average temperature | 52°F | ||
| Highest temperature | 56°F | ||
| Lowest temperature | 50°F | ||
| Sea temperature | 51°F | ||
| Rainfall | 2.4in | ||
| Number of days with rainfall | 4 day(s) (12%) | ||
| Humidity | 87% | ||
| Daily sunshine hours | 13 | ||
| Cloud cover | 50% | ||
| Length of day | 16:03 | ||
| Our opinion at whereandwhen.net | tolerable |
All cities in Northern Ireland in may
| Belfast in may | tolerable weather |
| Armagh in may | tolerable weather |
| Ballycastle (Causeway Coast) in may | tolerable weather |
| Derry (Londonderry) in may | tolerable weather |
| Donwpatrick in may | tolerable weather |
| Enniskillen (Fermanagh) in may | bad weather |
| Larne in may | tolerable weather |
| Annalong in may | tolerable weather |
| Antrim in may | tolerable weather |
| Ballyclare in may | tolerable weather |
| Ballymena in may | tolerable weather |
| Ballymoney in may | tolerable weather |
| Ballywalter in may | tolerable weather |
| Banbridge in may | tolerable weather |
| Bangor in may | tolerable weather |
| Carrickfergus in may | tolerable weather |
| Castlereagh in may | tolerable weather |
| Castlerock in may | tolerable weather |
| Coleraine in may | tolerable weather |
| Cookstown in may | tolerable weather |
| Craigavon in may | tolerable weather |
| Donaghadee in may | tolerable weather |
| Dromore in may | tolerable weather |
| Dundrum in may | tolerable weather |
| Dungannon in may | tolerable weather |
| Glenariff in may | tolerable weather |
| Holywood in may | tolerable weather |
| Kilkeel in may | bad weather |
| Kircubbin in may | tolerable weather |
| Limavady in may | tolerable weather |
Weather data for North Ireland in may:
Weather data for North Ireland in may is derived from an average of the weather forecast since 2009 in Northern Ireland. There is a margin of error and these forecasts are to be considered as general information only. The weather in Northern Ireland can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Northern Ireland.