Climate averages 1991–2020
Saint George's weather
in September.
A hot, wet month: the warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Saint George's: daytime highs average 28.4°C and nights cool to about 26.4°C. By daytime temperature it is the warmest month of the year.
Expect about 143 mm of rain on roughly 20 days, which makes September a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 12 min on an average September day.
The nearest other city in this atlas is Kingstown (135 km away). In September its highs average 28.7°C, about as warm as Saint George's, with 141 mm of rain.
From September to October, average highs fall by 0.3°C to 28.2°C, and monthly rainfall rises from 143 mm to 160 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Saint George's climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.5°C24.9°C | 24.9°C | 47 | 12.1 | 11.512 h |
| February | 26.6°C24.8°C | 24.8°C | 23 | 7.7 | 11.712 h |
| March | 27.0°C25.0°C | 25.0°C | 26 | 6.3 | 12.112 h |
| April | 27.7°C25.6°C | 25.6°C | 31 | 7.4 | 12.412 h |
| May | 28.1°C26.1°C | 26.1°C | 55 | 11.9 | 12.713 h |
| June | 27.9°C25.9°C | 25.9°C | 117 | 19.3 | 12.813 h |
| July | 27.7°C25.8°C | 25.8°C | 142 | 23.2 | 12.813 h |
| August | 28.0°C26.0°C | 26.0°C | 156 | 23.8 | 12.513 h |
| September, selected | 28.4°C26.4°C | 26.4°C | 143 | 20.2 | 12.212 h |
| October | 28.2°C26.3°C | 26.3°C | 160 | 23.0 | 11.912 h |
| November | 27.6°C25.8°C | 25.8°C | 161 | 22.0 | 11.612 h |
| December | 27.1°C25.4°C | 25.4°C | 75 | 15.2 | 11.411 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Kingstown in SeptemberSaint Vincent and the Grenadines · 135 kmHigh 28.7°C · Low 26.6°C · 141 mm rain
- Port of Spain in SeptemberTrinidad and Tobago · 156 kmHigh 29.2°C · Low 26.0°C · 101 mm rain
- Carúpano in SeptemberVenezuela · 225 kmHigh 31.6°C · Low 24.7°C · 52 mm rain
- Castries in SeptemberSaint Lucia · 231 kmHigh 29.1°C · Low 25.2°C · 104 mm rain
- Bridgetown in SeptemberBarbados · 259 kmHigh 28.5°C · Low 26.2°C · 133 mm rain
- Porlamar in SeptemberVenezuela · 261 kmHigh 28.8°C · Low 26.5°C · 36 mm rain
- Fort-de-France in SeptemberMartinique · 293 kmHigh 29.0°C · Low 26.2°C · 138 mm rain
- Maturín in SeptemberVenezuela · 300 kmHigh 31.0°C · Low 23.2°C · 97 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Saint George's) is explained once on the Saint George's year overview and on the Sources, method and limits page.