Weather in Grenada in September 2025
- September is usually the hottest month of the year in Grenada;
Average weather
Average temperature in Grenada in September
Going from a maximum of +30°C during the day to a minimum of +26°C during the night, the temperature in September averages around +29°C.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +29°C to +29°C.
Is Grenada warm or cold in September?
Grenada is typically warm in September.
Maximum temperatures go up compared to the previous month from +27°C to +28°C. The minimum temperature also goes up from +26°C to +26°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
September is the hottest month in Grenada, here is the comparison with other months:
Climate in Grenada in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +27°C | +28°C | +27°C | ||||
| Min. temperature | ||||||
| +24°C | +24°C | +24°C | ||||
| Max. temperature | ||||||
| +29°C | +30°C | +29°C | ||||
| Rainfall | ||||||
| 150 mm | 135 mm | 154 mm | ||||
| Wind | ||||||
| 5 m/s | 4 m/s | 5 m/s | ||||
| Humidity | ||||||
| 84% | 82% | 83% | ||||
| Air pressure | ||||||
| 1012 HPa | 1011 HPa | 1011 HPa | ||||
| Sunny days | ||||||
| 1 | 2 | 1 | ||||
| Cloudy days | ||||||
| 1 | 3 | 2 | ||||
| Rainy days | ||||||
| 27 | 23 | 24 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting warmer as September arrives. The average maximum temperature goes up from +27°C to +28°C during the day. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 150 mm to 135 mm. It feels drier, as humidity decreases from 84% to 82%. Winds are calmer in comparison to August, going down from 5 m/s to 4 m/s on average. The good news is there are likely to be more sunny days in September, from 1 to 2.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 5 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Grenada is gradually decreasing during September, going from 5 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Grenada?
Climate Change over Years
The climate in Grenada in September has not changed much over the last 43 years.
The average temperature was the lowest in 1985 (+26°C) and the highest in 2023 (+27°C). The driest year was 1994 with only 765 mm of rainfall, and the wettest year was 2005 with 1576 mm.
FAQ
Is September a good time to visit Grenada?
Can you sunbathe in Grenada in September?
Is Grenada rainy in September?
Is it sunny in Grenada in September?
Monthly weather in Grenada
Source of the data
For this page, we’ve looked at the typical weather in Grenada, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.