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Speightstown has a tropical monsoon climate.
Hot all year, with humid air and reliable rain — no real cool season.
What this climate feels like
The four things a regular visitor actually wants to know:
Daytime highs near 88°F most of the year. About 7 days a year above 90 °F.
Even the coolest nights stay near 72°F.
About 55 in of rain a year. Wettest in October.
A roughly even mix of sun and cloud.
What "tropical monsoon" means
Climate scientists sort every place on Earth into about 30 climate types, based on how hot, cold, wet and dry it is across the year. Speightstown's type — tropical monsoon — sits in the broad family of hot, humid climates near the equator.
Researchers write climate types as a short letter code. Here is what each letter means:
Cities with the same climate as Speightstown
A tropical monsoon climate (Am) — these recognizable cities share it. If you know one of them, you know roughly what to expect.
Speightstown sits near a climate boundary
This city sits right on the line between tropical monsoon and the next type along. Different climate maps file it on different sides of that line; the lived weather doesn't change at the line — it's a naming boundary, not a wall.
Has Speightstown's climate type changed?
A climate type is a coarse bucket. It can hold steady for years while the weather inside it shifts — or tip into the next bucket.
What this climate means for you
Tropical fruit and rice thrive on the monsoon rhythm. Time outdoor planting and harvest around the dry months; the wet season brings flooding and rot risk.
The dry months are the comfortable window for outdoor travel — the wet months bring heavy rain in concentrated bursts, not continuous drizzle.
Hot and humid year-round, with a dramatic shift to heavy rain in the wet months. Building drainage and storm-readiness matter as much as cooling.
Where these numbers come from
The climate type and the month-by-month figures on this page are computed from Speightstown's measured 30-year climate normals (1991–2020) — the same official records behind Speightstown's main climate page, so the two always agree.
Long-range climate maps measure things slightly differently and can place a city in a neighbouring category. Where they differ, this page uses the measured station record as the climate today.
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 11 years of daily observations at Grantley Adams, a weather station, about 27 km from the city centre. The underlying daily records come from NOAA's global station network.