Guyana Climate – July 2026 Update
Top 5 Cities: Georgetown, Linden, New Amsterdam, Anna Regina, and Bartica
Summary
Guyana experienced its hottest July since records began in 1940, breaking historic temperature thresholds as extraordinary tropical heat settled across the nation. The record monthly warmth capped an exceptionally mild three-month stretch, leaving soils drier and water resources under increasing pressure across coastal and hinterland regions. Local meteorologists warn that this extreme warmth is expected to persist through late autumn.
This month in numbers
July 2026 recorded an average temperature of 25.98°C, standing 1.8°C above the 1961–1990 baseline and ranking 1st out of 87 years on record for the period. This marks an all-time heat record for the month, surpassing all prior observations in dataset history stretching back to 1940. Over the broader May–July window, Guyana recorded an average temperature of 25.49°C, an anomaly of +1.2°C that ranks as the 3rd warmest May–July period on record.
What changed
The unprecedented warmth continues a distinct global warming trajectory. Globally, land temperatures for the month ran 1.6°C above baseline, making it the 3rd warmest July on record globally. Across the broader May–July window, global land temperatures ranked as the 2nd warmest on record. Within South America, tracked on our continental page at South America, Guyana ran 0.22°C warmer than the continental average for the month, placing 5th among South American nations for heat anomalies as the entire region tracked well above long-term norms.
What’s driving change?
The surge in temperatures is influenced by evolving tropical Pacific dynamics associated with ENSO, which historically brings elevated temperatures and suppressed rainfall to Guyana. As equatorial land areas absorb higher thermal energy under climate change, dynamics amplify inland heat, worsening evaporation and heat stress across agricultural areas and hinterland communities.
Looking ahead
Seasonal forecasts from Guyana's Hydrometeorological Service indicate that strengthening El Niño conditions will sustain higher-than-normal daytime and night-time temperatures alongside suppressed rainfall through late autumn.
Generated by Gemini from climate data and web sources
At a Glance
Temperature – Average
Climate Map – Global
Source: NOAA Climate at a Glance (countries & continents) · Met Office (UK) · US states & climate regions. Anomalies are vs the 1961–1990 baseline. See methodology.
Typical Climate – Guyana
Köppen Af · TropicalGuyana has a tropical climate (Köppen Af: Tropical rainforest), with only modest temperature variation through the year, but a pronounced wet and dry season. October is typically the warmest month, averaging 27.0°C, while January is the coldest at 24.8°C. Annual precipitation averages around 2375mm, concentrated mostly in the wet season.
Monthly climate normals (2016–2025) - bar colour and height show average temperature, the shaded area shows average monthly precipitation.
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Long-Term Trends
Combined Timeline – Guyana
Right axis: everything else standardized to standard deviations (σ) from its own average, since mm/hours/days aren't directly comparable to °C or to each other.
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Heatwave Days – Guyana
Warm Spell Duration Index (WSDI) - the WMO/ETCCDI heatwave measure: days in a 6+ day run above the local 90th-percentile temperature for that time of year.
Data: World Bank Climate Change Knowledge Portal (ERA5-derived). Refreshed roughly 1-2x/year, ~7-8 months behind present.
Year-on-Year Trends
The 4byo Climate Helix – Guyana
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Monthly Temperature – Guyana
Background lines show the last 40 years (plus the record year and its opposite, wherever they fall).
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Records – Guyana
Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP) - Anomalies vs 1901-2000 mean
Shifting Seasons
Wet / dry seasonsKöppen Am · TropicalGuyana doesn't have a warm/cold cycle - its monthly temperature range is only 1.8°C across the year - but it does have a strong wet/dry cycle (the wettest month gets 6× as much rain as the driest). So we track how the wet season has shifted instead.
Monthly precipitation climatology. A “wet month” exceeds the baseline monthly mean (dashed gold line). Biggest month-to-month shift: Jun (+69 mm, +23%).
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Emissions & Energy
Explore
Explore Climate Data
Data Sources
Data Sources for Guyana
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.
Country-level temperature anomaly, sourced from Copernicus ERA5 and Hadley HadCRUT5.
Annual country and global CO₂ emissions, from the Global Carbon Project.
Monthly rainfall - Global Precipitation Climatology Centre (DWD) preferred, World Bank CCKP/CRU TS fallback where GPCC lacks direct coverage.
Frost Days and Heatwave Days (Warm Spell Duration Index), ERA5-derived. World Bank Climate Change Knowledge Portal.
Monthly snow water-equivalent, Global Precipitation Climatology Centre (DWD).
FAQs
FAQs
How is the climate in Guyana changing?
Guyana 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.
What is the climate like in Guyana?
Guyana has a tropical climate (Köppen Af: Tropical rainforest), with only modest temperature variation through the year, but a pronounced wet and dry season. October is typically the warmest month, averaging 27.0°C, while January is the coldest at 24.8°C. Annual precipitation averages around 2375mm, concentrated mostly in the wet season.
Where does the climate data for Guyana come from?
Climate data for Guyana 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 Guyana climate data cover?
The Guyana climate profile covers Georgetown, Linden, New Amsterdam, Anna Regina and surrounding areas. Temperature, rainfall and emissions data for Guyana
How often is the Guyana climate update refreshed?
The Guyana 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.
What counts as a Heatwave Day on the Guyana climate page?
Heatwave Days use the Warm Spell Duration Index (WSDI) - the WMO/ETCCDI-standard heatwave measure: days that are part of a run of 6 or more consecutive days above the local 90th-percentile temperature for that calendar day. The 90th-percentile threshold varies by time of year (a hot day in January is judged differently to one in July) but is fixed to the 1961-1990 baseline for every year shown - it does not shift as the climate warms, which is why Heatwave Days trend upward over time.
Does the Guyana climate page include frost and snow data?
Yes. Frost Days (days with a minimum temperature below 0°C, World Bank CCKP) and snow water-equivalent (GPCC) are shown alongside temperature and precipitation, each measured against the 1961-1990 baseline where a like-for-like historical comparison is available.