Solomon Islands Climate
Top 5 Cities: Honiara, Gizo, Auki, Noro, and Tulagi
This month in numbers
The Solomon Islands experienced its 6th warmest April on record, with an average temperature of 26.74°C, marking an anomaly of +0.8°C compared to the 1961–1990 baseline. Globally, April 2026 was the 2nd warmest April on record for land temperatures, with an anomaly of +1.1°C. The three-month period from February to April 2026 was the 3rd warmest on record for the Solomon Islands, with an average temperature of 26.92°C and an anomaly of +1°C.
What changed
The Solomon Islands' average temperature for February–April 2026 was +1°C above the 1961–1990 baseline, ranking as the 3rd warmest such period in 86 years of records. This warming trend is consistent with the long-term picture for the islands, which has seen a trend of +0.85°C compared to the 1961–1990 baseline. The Solomon Islands ranked 200th out of 234 regions globally for its 3-month temperature anomaly, indicating that while it was significantly warmer than average for the region, other areas experienced even more pronounced warming.
What’s driving change?
The warming experienced in the Solomon Islands is largely influenced by the broader global warming trend, with the year 2025 being the warmest on record for the islands. A significant event impacting the region in April 2026 was Tropical Cyclone Maila, which rapidly intensified to a Category 4–5 system in the Solomon Sea. This cyclone brought destructive winds, heavy rainfall, and flooding, leading to a State of Disaster being declared for Western and Choiseul Provinces. Over 150,000 people were affected, with widespread damage to homes, schools, health facilities, and transport networks. The presence of ENSO, specifically a possible strengthening El Niño, is also a key driver for a potentially more severe cyclone season ahead.
Looking ahead
Forecasts suggest a possible strengthening El Niño, which could lead to a more severe cyclone season in the coming months.
Generated by Gemini from climate data and web sources
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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 trend rate is shown as °C per decade in the headline panel; you can also see 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.