Climate zones in Guyana, 1991 to 2020
Share of Guyana's classified land in each Köppen-Geiger zone in 1991 to 2020. Zones under 0.05% are left out. The 247,663 map cells used cover 100% of the country's outline (about 211,800 km²).
By major group: A (tropical) 100%, C (temperate) 0.2%.
Af, tropical rainforest, is the main climate of Guyana, covering 77% of its classified land in 1991 to 2020, with Am (tropical monsoon) next at 19%. In plain terms, tropical rainforest means hot, wet and green every month of the year. Under the middle-of-the-road scenario (SSP2-4.5), 29% of its land is projected to be in a different zone by 2071 to 2099, with the biggest gain going to Am (tropical monsoon).
How Guyana's zones have changed and may change
Each row compares a map with 1991 to 2020. "Share in a different zone" is the share of the country's area whose class is different from 1991 to 2020. Future rows are model projections under an emissions scenario, not forecasts.
| Map | Share in a different zone | Different major group | Biggest gain | Biggest loss |
|---|---|---|---|---|
| 1901 to 1930 (past) | 21% | 0.2% | Af +19.2 percentage points | Am -17.5 percentage points |
| 2071 to 2099, SSP1-2.6 (low emissions) | 21% | 0.2% | Am +17.5 percentage points | Af -18.4 percentage points |
| 2071 to 2099, SSP2-4.5 (middle of the road) | 29% | 0.2% | Am +23.2 percentage points | Af -25.4 percentage points |
| 2071 to 2099, SSP5-8.5 (high emissions) | 42% | 0.2% | Am +28.7 percentage points | Af -35.1 percentage points |
For the past row, the comparison runs the other way: the 1901 to 1930 map against 1991 to 2020.
Zone shares by map
| Zone | 1901 to 1930 | 1991 to 2020 | SSP1-2.6 (2071 to 2099) | SSP2-4.5 (2071 to 2099) | SSP5-8.5 (2071 to 2099) |
|---|---|---|---|---|---|
| Af Tropical rainforest | 58% | 77% | 59% | 52% | 42% |
| Am Tropical monsoon | 36% | 19% | 36% | 42% | 47% |
| Aw Tropical savannah | 5.3% | 3.9% | 4.9% | 6.3% | 11% |
| Cfb Temperate oceanic | 0.4% | 0.2% | - | - | - |
Percentages are of the country's classified land in each map. A dash means under 0.05%.
Zones found in Guyana
Data: Beck et al. (2023), CC BY 4.0; country outlines from Natural Earth. In 1901 to 1930 the most common zone was Af. See data sources and licences.