Puerto Rico Climate – June 2026 Update
Top 5 Cities: San Juan, Bayamón, Carolina, Ponce, and Caguas
This month in numbers
Puerto Rico experienced its 14th warmest June on record, with an average temperature of 26.5°C, an anomaly of +0.6°C compared to the 1961–1990 baseline. The April–June 2026 period also ranked as the 15th warmest on record, with an average temperature of 25.68°C, also +0.6°C above the baseline. Globally, June 2026 was the 3rd warmest June on record for land temperatures, with an anomaly of +1°C, while the April–June period was the 2nd warmest on record globally, also with a +1°C anomaly.
What changed
Puerto Rico's consistent above-average temperatures this quarter align with a broader warming trend, as 2025 was the warmest year on record for the island, with an average temperature of 26.35°C. The long-term trend for Puerto Rico shows a warming of +0.69°C compared to the 1961–1990 baseline. While Puerto Rico experienced warmer-than-average conditions, its 1-month and 3-month temperature anomalies placed it 176th and 208th respectively out of 234 regions in cross-region rankings, indicating that other parts of the world, particularly in Europe and parts of the US, experienced significantly higher temperature anomalies.
What’s driving change?
The current weak El Niño conditions, with a +0.98°C anomaly in the NOAA ONI 3-month (AMJ 2026) index, are a significant factor influencing Puerto Rico's climate. El Niño typically leads to drier conditions in the Caribbean during the summer and autumn months, and this has been evident with drought conditions developing across Puerto Rico in June. This further exacerbates warming, as the lack of moisture in the soil reduces evaporative cooling. Additionally, high concentrations of Saharan dust affected the region in June, reducing air quality and potentially contributing to hazy skies and warmer conditions.
Looking ahead
The NOAA CPC forecast indicates a 100% probability of El Niño conditions persisting and strengthening through the end of 2026, suggesting a continued likelihood of drier-than-normal conditions and suppressed Atlantic hurricane activity for Puerto Rico in the coming months.
Generated by Gemini from climate data and web sources
At a Glance
Temperature – Average
Year-on-Year Trends
The 4byo Climate Helix – Puerto Rico
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.
Puerto Rico – 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 – Puerto Rico
Our World in Data / NOAA - Anomalies vs 1901-2000 mean
Shifting Seasons
Weakly seasonalKöppen Af · TropicalPuerto Rico is weakly seasonal - temperature barely changes across the year (3.0°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: Oct (+1.3°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.
Climate Systems
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Emissions & Energy
Explore
Explore Climate Data
Data Sources
Data Sources for Puerto Rico
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 Puerto Rico changing?
Puerto Rico 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 Puerto Rico come from?
Climate data for Puerto Rico 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 Puerto Rico climate data cover?
The Puerto Rico climate profile covers San Juan, Bayamón, Carolina, Ponce and surrounding areas. Temperature, rainfall and emissions data for Puerto Rico
How often is the Puerto Rico climate update refreshed?
The Puerto Rico 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.