When is the best time to go to Northern Ireland?

When is the best time to go to Northern Ireland? Here's some information to help you in your decision:

  • In Northern Ireland, the weather is good across more than 16% of the territory for: June, July and September
  • The best months to go to Belfast are May, June, July, August, September and October
  • On average, the warmest months in Belfast are June, July and August, and the coldest months are January and February
  • The rainiest months in this city are June, August and November
  • The cities with the best climate are Donwpatrick, Bangor, Carrickfergus, Dundrum, Kircubbin, Newtownards and Portaferry, with good weather at least 3 months a year

For information about the climate and the weather city by city in Northern Ireland for a specific month, click on the corresponding line below:

January 40°F to 45°F
3 to 20 days*
February 41°F to 45°F
4 to 18 days*
March 43°F to 47°F
3 to 17 days*
April 47°F to 50°F
2 to 15 days*
May 52°F to 54°F
3 to 18 days*
June 56°F to 59°F
4 to 18 days*
July 59°F to 61°F
4 to 22 days*
August 58°F to 61°F
5 to 23 days*
September 54°F to 59°F
3 to 19 days*
October 50°F to 56°F
4 to 20 days*
November 45°F to 50°F
3 to 20 days*
December 41°F to 47°F
3 to 20 days*
* weather varies across the country

Best time to travel to North Ireland by cities

Chargement en cours


The best months to go to Belfast are may, june, july, august, september and october.



No month is ideal for visiting Armagh

Ballycastle (Causeway Coast)

Ballycastle (Causeway Coast)

The best months to go to Ballycastle (Causeway Coast) are may, june, july, august, september and october.

See full list of cities

Temperatures and rainfall in Northern Ireland

On these 3 graphs, we present the evolution of temperatures of North Ireland and month-by-month rainfall for the cities of Belfast, Armagh, Ballycastle (Causeway Coast), Derry (Londonderry) and Donwpatrick, as well as the month-by-month sea temperature for coastal cities.

Where to go in Northern Ireland?

This table allows you to see the maximum temperature for each city and our opinion on the weather month by month (see colour legend below the table).

Cities jan.feb.mar.apr.mayjun.jul.aug.sep.oct.nov.dec.
Ballycastle (Causeway Coast)47°F47°F49°F50°F56°F59°F61°F61°F59°F56°F50°F47°F
Derry (Londonderry)45°F47°F49°F54°F58°F63°F65°F63°F61°F56°F49°F45°F
Enniskillen (Fermanagh)43°F45°F49°F54°F58°F63°F65°F63°F59°F54°F49°F45°F


good weather

tolerable weather

bad weather

very bad weather

About North Ireland

What can I do in Northern Ireland?

Beaches / swimming

Nature and countryside

Culture and heritage


Family travel

Crafts / shopping



Is this weather information for North Ireland reliable?

Climate data for North Ireland has been gathered every day since January 2009. The analysis of these meteorological data for North Ireland allows us to determine the average for each month in Belfast, Armagh, Ballycastle (Causeway Coast), Derry (Londonderry), Donwpatrick, Enniskillen (Fermanagh), Larne, Annalong, and 37 other cities.

So yes: this data is reliable except in cases of temporary climate disruption in the region.

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