Hawaii Climate – June 2026 Update
Top 5 Cities: Honolulu, Hilo, Kailua, Pearl City, and Waipahu
This month in numbers
Hawaii experienced its 15th warmest June on record, with an average temperature of 20°C. Globally, June 2026 was the 3rd warmest June on record for land temperatures, with an anomaly of +1°C compared to the 1961–1990 baseline. Precipitation in Hawaii was notably high, ranking as the 2nd wettest June on record with 178.56 mm of rainfall.
What changed
Looking at the broader picture, the April–June 2026 period saw Hawaii record its 10th warmest average temperature on record at 19.37°C. This three-month period also ranked as the 3rd wettest on record, with 162.39 mm of precipitation. Globally, the April–June 2026 period was the 2nd warmest on record for land temperatures, with an anomaly of +1°C. Hawaii's recent rainfall stands in contrast to the overall drier-than-normal conditions experienced across much of the island chain during March-May, which saw drought conditions re-emerge and intensify in some areas.
What’s driving change?
The significant rainfall in June, particularly on the Big Island, led to localised flooding and road closures. This follows earlier in the year when Hawaii experienced two Kona storms in March 2026, which brought widespread flash floods and an estimated $1 billion in damages across the state. The recent concentration of four wildfire events between June 27 and July 12 represents 100% of the annual total for Hawaii, an unusual concentration, with authorities preparing for the wildfire season. Similarly, a single flood event between May 19 and July 12 accounts for 100% of the annual total, highlighting an unusual clustering of such events. More information on these events can be found at Extreme Weather tracker.
Looking ahead
Enhanced probabilities for above normal temperatures are predicted for all Hawaiian islands from July to September 2026, continuing through November to January 2026-27. Above normal precipitation is also forecast for all Hawaiian islands from July to October 2026.
Generated by Gemini from climate data and web sources
At a Glance
Temperature – Average
Climate Map – USA
Source: NOAA Climate at a Glance — US states & climate regions (tavg, pcp). Anomalies are vs the 1961–1990 baseline (temperature) or 1991–2020 (rainfall). See methodology.
Year-on-Year Trends
The 4byo Climate Helix – Hawaii
Data: NOAA National Centers for Environmental Information. Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Hawaii – Monthly Temperature – All Years
Data: NOAA National Centers for Environmental Information. Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Records – Hawaii
NOAA National Centers for Environmental Information - Anomalies vs 1901-2000 mean
Shifting Seasons
Weakly seasonalKöppen Cfb · TemperateHawaii is weakly seasonal - temperature barely changes across the year (3.6°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: Jan (+0.5°C).
Data: NOAA National Centers for Environmental Information. Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Rainfall & Precipitation
Rainfall & Rain Days – Totals
Emissions & Energy
Explore
Explore Climate Data
Data Sources
Data Sources for Hawaii
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 Hawaii changing?
Hawaii 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 Hawaii come from?
Climate data for Hawaii comes from NOAA Climate at a Glance (temperature and precipitation), 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 Hawaii climate data cover?
The Hawaii climate profile covers Honolulu, Hilo, Kailua, Pearl City and surrounding areas. Hawaii climate data from NOAA Climate at a Glance
How often is the Hawaii climate update refreshed?
The Hawaii 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.