Explore historical and projected climate data, climate data by sector, impacts, key vulnerabilities and what adaptation measures are being taken. Explore the overview for a general context of how climate change is affecting Ireland.

Country Summary

This page presents high-level information for Ireland's climate zones and its seasonal cycle for mean temperature and precipitation for the latest climatology, 1991-2020. Climate zone classifications are derived from the Köppen-Geiger climate classification system, which divides climates into five main climate groups divided based on seasonal precipitation and temperature patterns. The five main groups are A (tropical), B (dry), C (temperate), D (continental), and E (polar). All climates except for those in the E group are assigned a seasonal precipitation sub-group (second letter).  Climate classifications are identified by hovering your mouse over the legend. A narrative overview of Ireland's country context and climate is provided following the visualizations.

Köppen-Geiger Climate Classification, 1991-2020
  • Af
  • Am
  • As/Aw
  • BWh
  • BWk
  • BSh
  • BSk
  • Csa
  • Csb
  • Csc
  • Cwa
  • Cwb
  • Cwc
  • Cfa
  • Cfb
  • Cfc
  • Dsa
  • Dsb
  • Dsc
  • Dsd
  • Dwa
  • Dwb
  • Dwc
  • Dwd
  • Dfa
  • Dfb
  • Dfc
  • Dfd
  • ET
  • EF

Ireland is situated off the north-west coast of the continent of Europe between longitude 5.5° and 10.5° W and latitude 51.5° and 55.5° N. Ireland comprises a total of 70,282 km2 and has 3,172 km of coastline. Ireland is a small, modern, and trade-dependent economy. Between 2007 and 2011, its GDP shrank by 10% and employment fell by 14%, with Ireland’s deficit necessitating an EU-IMF bailout programme. Ireland’s population stood at 4,761,865 in April 2016. Population has been steadily growing since the 1990s, and has increased by 36% since then. This population growth was brought about by natural population increases, offset by a small net migration. Ireland has a mild temperate oceanic climate, due to the controlling influence of the Atlantic Ocean. Mean annual temperatures generally range between 9°C and 10°C with the higher values in coastal regions. Summer is the warmest season, followed by Autumn, Spring and Winter. The highest temperatures occur inland during the summer, with mean seasonal maximum between 18°C and 20°C while highest values occur in coastal regions during the Winter. Ireland submitted its Nationally Determined Contribution (NDC) as an EU Member State in 2015 and its Seventh National Communication in 2018.