St. George's weather in September

September in St. George's: sweltering, rainy, with clean air — fine if you can take 20 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

St. George's🇬🇩 Grenada · Lesser Antilles · Island80
  1. 88Jan
  2. 89Feb
  3. 90Mar
  4. 89Apr
  5. 86May
  6. 80Jun
  7. 76Jul
  8. 78Aug
  9. 80Sep
  10. 75Oct
  11. 77Nov
  12. 84Dec

#8 of 12 months in St. George's · #700 of 1413 destinations to visit in September · comfort 80/100 (tier A)

Days
32°C
Nights
26°C
Wet days
20
Sun
10.7 h
Humidity
80%
Daylight
12 h
St. George's, Grenada
Photo: cwi · CC BY-SA 3.0

Traveller notes on St. George's in September

Forum posters describe September temperatures in the mid-80sF (around 29-30C), with brief daily showers - typically 15-30 minutes, often first thing in the morning or overnight - that posters describe as a welcome cooling-off rather than a disruption, with a full washout day happening maybe once every couple of weeks. Posters note one visitor's mid-September trip specifically saw heavy but short-lived rain that cleared quickly. Posters are consistent that while September falls within hurricane season, Grenada sits outside the main hurricane belt, citing only about three major storms in the past 50 years as evidence the risk here runs genuinely lower than further north in the Caribbean. Posters describe September as a quieter month with fewer tourists and easier hotel bookings. Posters generally rate September as warm, occasionally rainy but rarely disruptive for St. George's, with meaningfully lower hurricane risk than much of the wider Caribbean.
Tripadvisor community · September · 1 month ago · Read more on Tripadvisor ↗

Other months in St. George's

Forum posters describe March as squarely in the middle of Grenada's dry season, running January through June, and consistently rate it a good time to visit despite what online forecasts sometimes show - posters are direct that there are no real storms this time of year regardless of what a weather app predicts. Posters flag the so-called Easter winds as a genuine feature of this period, cooling things down but also kicking up loose sand on the beach. Posters describe daytime temperatures typically in the high 20s to low 30sC with overnight lows noticeably cooler, and generally rate any rain that does fall as brief showers rather than extended wet spells. Posters consistently rate March as a comfortable, reliably dry time to visit St. George's.
Tripadvisor community · March · 1 month ago · Read more on Tripadvisor ↗

Add your own note from St. George's's card on the map.

St. George's climate normals — September

Daytime high32°C / 89°F🔥 sweltering
Nighttime low26°C / 78°F
Feels like (high)37°C / 99°F
Sea temperature30°C / 86°F♨️ bath-warm
Rainfall129 mm / 5.1 in🌧 rainy
Rainy days20 days
Humidity80%💦 very humid
Dew point25°C / 77°F
Sunshine10.7 h/day
Daylight12.2 h
Wind25 km/h / 16 mph
Air quality (US AQI)39🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in St. George's in September

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Quiettravelers describe it as quiet, school holidays in 2 of the markets that fill it

Sourced from traveler notes: “…ribbean. Posters describe September as a quieter month with fewer tourists and easier hotel bookings. Posters generally rate September…” — Tripadvisor community

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Peak crowdsBusyShoulder seasonQuiet

Best months for St. George's's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherSt. George's's weather doesn't swing hard through the year — comfort stays fairly steady in every month.

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What's on in St. George's in September

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Hazard

    Hurricane season

    1 Jun – 30 Nov

    Grenada sits at the southern edge of the belt and was thought safe until Ivan took the roofs off most of the island and the nutmeg trees with them in 2004. That is still the reference point here. Source ↗

What's on around the world in September →

Nearby, and something's on

Within 300 km of St. George's — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is St. George's?

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St. George's in September — FAQ

Is September a good time to visit St. George's?
September in St. George's: sweltering, rainy, with clean air — fine if you can take 20 rainy days. It ranks #8 of 12 months for St. George's on SeasonMap's comfort score (80/100).
What is the weather like in St. George's in September?
In September, St. George's averages a daily high of 31.5°C and a low of 25.8°C, with about 129.2 mm of rain over roughly 19.5 rainy days.
What is the air quality in St. George's in September?
St. George's has a mean US Air Quality Index of about 39 in September.

Within 300 km: Bridgetown's Hawksbill nesting around 1 May – 31 Oct, and Tobago's Emancipation and Independence on 31 Jul – 1 Sep.