Weather in Nassau in September 2025
Average weather
Average temperature in Nassau in September
The temperature in September is +84°F on average, with a range between a maximum of +88°F during the day and a minimum of +77°F at night.
The average maximum temperature goes down 33% by the end of the month, compared with the beginning of the month, from +88°F to +84°F.
Is Nassau warm or cold in September?
Nassau is typically warm in September.
Maximum temperatures go down compared to the previous month from +84°F to +82°F. The minimum temperature also goes up from +81°F to +81°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
September is one of the warmest months in Nassau, here is the comparison with other months:
Climate in Nassau in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +84°F | +82°F | +81°F | ||||
| Min. temperature | ||||||
| +73°F | +73°F | +70°F | ||||
| Max. temperature | ||||||
| +91°F | +91°F | +90°F | ||||
| Rainfall | ||||||
| 113 mm | 137 mm | 130 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 4 m/s | ||||
| Humidity | ||||||
| 81% | 81% | 79% | ||||
| Air pressure | ||||||
| 1015 HPa | 1013 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 2 | 1 | 3 | ||||
| Cloudy days | ||||||
| 4 | 3 | 6 | ||||
| Rainy days | ||||||
| 19 | 21 | 21 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +84°F in the day, the average maximum temperature lowers to +82°F. Prepare for more rain. Average rainfall goes from 113 mm to 137 mm. Humidity levels don’t change as the month goes on, averaging around 81%. The average wind speed doesn’t change much during September, staying around 3 m/s. The days becoming less sunny, going from 2 sunny days in August to 1 in September.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Nassau is gradually increasing during September, going from 2 m/s to 4 m/s over the course of the month.
Rain
How was the weather last September in Nassau?
Climate Change Over the Years
The climate in Nassau in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1981 (+77°F) and the highest in 2019 (+83°F). The driest year was 1989 with only 571 mm of rainfall, and the wettest year was 1983 with 1275 mm.
FAQ
Is September a good time to visit Nassau?
Can you sunbathe in Nassau in September?
Is Nassau rainy in September?
Is it sunny in Nassau in September?
Monthly weather in Nassau
Source of the data
For this page, we’ve looked at the typical weather in Nassau, 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.