Solomon Islands Climate – June 2026 Update
Top 5 Cities: Honiara, Gizo, Auki, Noro, and Tulagi
This month in numbers
June 2026 saw the Solomon Islands experience its 5th warmest June on record, with an average temperature of 26.4°C, a significant +0.9°C anomaly compared to the 1961–1990 baseline. The period of April–June 2026 also ranked as the 5th warmest on record for the Solomon Islands, with an average temperature of 26.63°C, also +0.9°C above the baseline. Globally, June 2026 was the 3rd warmest June on record for land temperatures, and the April–June 2026 period was the 2nd warmest on record for global land temperatures.
What changed
The Solomon Islands has experienced consistently warmer-than-average temperatures in recent months, with anomalies exceeding +0.8°C since April 2026. This trend aligns with the broader global picture, as global land temperatures also show significant warming, with the latest three-month period ranking as the 2nd warmest on record. The country's long-term warming trend stands at +0.85°C against the 1961–1990 baseline, with 2025 being the warmest year on record.
What’s driving change?
The warming trend in the Solomon Islands is significantly influenced by ENSO, with the Solomon Islands Meteorological Service having declared El Niño conditions in June 2026. This El Niño is expected to intensify in late 2026 and last until April or May 2027, with warnings of a "super El Niño" comparable to the 1997–1998 event but occurring under hotter global conditions. The region also experienced Tropical Cyclone Maila in April 2026, which brought severe wind and rain, causing widespread damage and compounding existing vulnerabilities. A strong wind warning was also issued by the Solomon Islands Meteorological Service on June 7, 2026, for several provinces.
Looking ahead
The ongoing El Niño is expected to bring drier-than-normal conditions to portions of the Solomon Islands for the July–September 2026 period.
Generated by Gemini from climate data and web sources
At a Glance
Temperature – Average
Year-on-Year Trends
The 4byo Climate Helix – Solomon Islands
Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Solomon Islands – Monthly Temperature – All Years
Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Records – Solomon Islands
Our World in Data / NOAA - Anomalies vs 1901-2000 mean
Shifting Seasons
Weakly seasonalKöppen Af · TropicalSolomon Islands is weakly seasonal - temperature barely changes across the year (0.8°C range) and rainfall is fairly even. The clearest climate signal here is overall warming: monthly temperature has risen in every month.
Baseline vs recent monthly temperature climatology. Biggest warming: Jul (+1.1°C).
Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Rainfall & Precipitation
Rainfall & Rain Days – Totals
Headline: anomaly vs the 1961–1990 mean. Small figure: the actual value. Rank: position in the full record (1st = highest ever). Record: highest (or lowest) value on record with its year.
Emissions & Energy
Explore
Explore Climate Data
Data Sources
Data Sources for Solomon Islands
Every figure on this page is sourced from official, openly published climate datasets. Anomalies are calculated against the 1961–1990 baseline (temperature) and 1991–2020 (rainfall, sunshine, frost) - see the Methodology & Sources page for the complete dataset list and update calendar.
FAQs
FAQs
How is the climate in Solomon Islands changing?
Solomon Islands is warming in line with the rest of the world. The page above shows the latest monthly temperature anomaly versus the 1961-1990 baseline, the long-term annual trend, and the region's rank in the historical record. The headline panel also shows the long-term trend rate per decade and the warmest and coolest years on file.
Where does the climate data for Solomon Islands come from?
Climate data for Solomon Islands comes from Our World in Data, sourcing Copernicus ERA5 and HadCRUT5 (national temperature anomaly) and the Global Carbon Project via Our World in Data (CO₂ emissions), refreshed every month, when the upstream temperature and rainfall data are refreshed.
What is the climate baseline used on this page?
Anomalies on this page are calculated against the 1961-1990 climatological baseline, which is the standard reference period used by the Met Office, NOAA, IPCC and most national climate services. Some panels also show the source-native 1901-2000 (NOAA) or 1991-2020 (WMO) baselines for verification. See Methodology & Sources for the full reference.
Which areas does the Solomon Islands climate data cover?
The Solomon Islands climate profile covers Honiara, Gizo, Auki, Noro and surrounding areas. Temperature, rainfall and emissions data for Solomon Islands
How often is the Solomon Islands climate update refreshed?
The Solomon Islands climate update is refreshed monthly, typically a few days after the previous month closes and the upstream provider (Met Office HadUK-Grid, NOAA Climate at a Glance, Copernicus ERA5 or the Global Carbon Project) publishes its update. See the Climate Rankings for cross-region comparisons.