Marshall Islands

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 Marshall Islands.

Country Summary

This page presents high-level information for Marshall Islands'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 Marshall Islands'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

The Republic of the Marshall Islands (RMI) is a raised atoll island nation located in the North Pacific Ocean at equal distance between Hawaii and Australia. The country comprises 34 major islands and atolls and the average elevation of most islands is approximately 2 meters above sea level. Its relative isolation and limited resources make the Republic of the Marshall Islands – like all Small Island Developing States (SIDS) – extremely vulnerable to the adverse impacts of climate change. The country’s small land area means that over 99% of the population lives along the coastline, rendering a considerable portion of the country’s economy, infrastructure, and livelihoods highly vulnerable to natural hazards such as cyclones and climatic hazards such as sea level rise. According to the Intergovernmental Panel on Climate Change’s (IPCC) 4th Assessment Report, the effects of rising sea level are “likely to be of a magnitude that will disrupt virtually all economic and social sectors in small island nations”. 

The RMI adopted the National Climate Change Policy Framework (NCCPF), which sets out its commitments and responsibilities to address climate change. The NCCPF is intended to guide the development of adaptation and energy security measures that respond to RMI’s needs with an “All Islands Approach”. Most of the primary energy supply (90%) is from petroleum, and is heavily reliant on external assistance. Emissions peaked around 2009 and have been trending downwards since, in line with the goals in the National Energy Plan and National Climate Change Policy, based on the ‘National Climate Change Roadmap’.Marshall Islands ratified the Paris Agreement on April 22, 2016 and the second Nationally Determined Contribution can be found here