Weather in Antigua in September 2025
- September is usually the hottest month of the year in Antigua;
Average weather
Average temperature in Antigua in September
The expected average maximum temperature in September is +84°F with a maximum of +86°F and a minimum of +79°F.
The average maximum temperature goes up 25% by the end of the month, compared with the beginning of the month, from +84°F to +86°F.
Is Antigua warm or cold in September?
Antigua is typically warm in September.
Maximum temperatures go up compared to the previous month from +82°F to +82°F. The minimum temperature also goes up from +79°F to +79°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
September is the hottest month in Antigua, here is the comparison with other months:
Water temperature in Antigua in September
Water in Antigua in September is Very warm. It varies from +83°F to +87°F, with an average of +85°F. Note that the air temperature is lower than the water temperature, averaging around +82°F.
The water temperature in September is one of the warmest of the entire year:
Can you swim in Antigua in September?
Climate in Antigua in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +82°F | +82°F | +81°F | ||||
| Min. temperature | ||||||
| +75°F | +73°F | +73°F | ||||
| Max. temperature | ||||||
| +88°F | +91°F | +90°F | ||||
| Rainfall | ||||||
| 88 mm | 116 mm | 123 mm | ||||
| Wind | ||||||
| 5 m/s | 4 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| +84°F | +85°F | +84°F | ||||
| Humidity | ||||||
| 77% | 78% | 78% | ||||
| Air pressure | ||||||
| 1014 HPa | 1012 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 1 | 1 | 1 | ||||
| Cloudy days | ||||||
| 3 | 4 | 4 | ||||
| Rainy days | ||||||
| 24 | 21 | 22 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. The temperature levels stay the same in the area of +82°F for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 88 mm to 116 mm. Humidity rises from 77% to 78%. Winds are calmer in comparison to August, going down from 5 m/s to 4 m/s on average. The amount of sunny days stay about the same, averaging 1 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Antigua is gradually increasing during September, going from 3 m/s to 3 m/s over the course of the month.
Rain
How was the weather last September in Antigua?
Climate Change Over the Years
The climate in Antigua in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1985 (+78°F) and the highest in 2019 (+84°F). The driest year was 1994 with only 425 mm of rainfall, and the wettest year was 2020 with 1243 mm.
FAQ
Is September a good time to visit Antigua?
Can you sunbathe in Antigua in September?
Can you swim in Antigua in September?
Is Antigua rainy in September?
Is it sunny in Antigua in September?
Monthly weather in Antigua
Source of the data
For this page, we’ve looked at the typical weather in Antigua, 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.