Climate zones in Grenada, 1991 to 2020
Share of Grenada's classified land in each Köppen-Geiger zone in 1991 to 2020. Zones under 0.05% are left out. The 388 map cells used cover 93% of the country's outline (about 326 km²).
By major group: A (tropical) 100%.
Am, tropical monsoon, is the main climate of Grenada, covering 75% of its classified land in 1991 to 2020, with Af (tropical rainforest) next at 25%. In plain terms, tropical monsoon means hot all year, with a very wet season and a short dry spell. 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 Grenada'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) | 32% | 0% | Af +25.2 percentage points | Am -18.5 percentage points |
| 2071 to 2099, SSP1-2.6 (low emissions) | 21% | 0% | Am +17.5 percentage points | Af -18.6 percentage points |
| 2071 to 2099, SSP2-4.5 (middle of the road) | 29% | 0% | Am +20.9 percentage points | Af -25 percentage points |
| 2071 to 2099, SSP5-8.5 (high emissions) | 50% | 0% | Aw +24.5 percentage points | Af -25.2 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) |
|---|---|---|---|---|---|
| Am Tropical monsoon | 93% | 75% | 92% | 95% | 75% |
| Af Tropical rainforest | - | 25% | 6.7% | 0.3% | - |
| Aw Tropical savannah | 7% | 0.3% | 1.3% | 4.4% | 25% |
Percentages are of the country's classified land in each map. A dash means under 0.05%.
Zones found in Grenada
Data: Beck et al. (2023), CC BY 4.0; country outlines from Natural Earth. In 1901 to 1930 the most common zone was Am. See data sources and licences.