September weather - Autumn 2024 - Nevis, Saint Kitts and Nevis

Weather in September
Frequently asked questions
Average temperature in September
Average rainfall in September
Average rainfall days in September
Average sea temperature in September
Average daylight in September
Average sunshine in September
Average UV index in September

The lovely waterfront of Nevis in Saint Kitts and Nevis, with a distant view of mountains

Weather in September

September mirrors August's conditions, but the most significant distinction is the record amount of rainfall. The figure stands at 139mm (5.47"), the highest for the year. This doesn't deter outdoor activities as daylight and sunshine hours remain adequate. The sea temperature reaches its peak at 29°C (84.2°F), perfect for beach-related activities. Treading into October, an observable decline in various parameters begins.

Temperature

Nevis witnesses its highest average temperatures during June through October, peaking at 31°C (87.8°F).

Rainfall

September is the month with the most rainfall in Nevis, Saint Kitts and Nevis. Rain falls for 18 days and accumulates 139mm (5.47") of precipitation.

Sea temperature

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
Note: Swimming, diving, and other water endeavors at temperatures between 25°C (77°F) and 29°C (84.2°F) are considered enjoyable and satisfying for extended periods without discomfort.

Daylight

In September, the average length of the day in Nevis is 12h and 14min.
On the first day of September, sunrise is at 05:56 and sunset at 18:23. On the last day of the month, sunrise is at 06:00 and sunset at 17:59 AST.

Sunshine

January through March, May through December, with an average of 8h of sunshine, are months with the least sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Nevis. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In September, a daily UV index of 12 turns into the following recommendations:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Stay cautious! Sand and water reflections increase UV radiation potency.

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Frequently asked questions

What time of the year is the hottest in Nevis?

June through October are identified as the warmest months, with an average high-temperature of 31°C (87.8°F).

How hot is September in Nevis?

In Nevis, in September, the average high-temperature is 31°C (87.8°F), and the average low-temperature is 25°C (77°F).

What is the wettest month in Nevis?

September is the month with the most rainfall in Nevis. Rain falls for 18 days and accumulates 139mm (5.47") of precipitation.

How much does it rain in Nevis in September?

In Nevis, Saint Kitts and Nevis, in September, during 18 rainfall days, 139mm (5.47") of precipitation is typically accumulated.

What are the months with the warmest sea water in Nevis?

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Nevis, Saint Kitts and Nevis.

How warm is the water in September in Nevis?

In Nevis, Saint Kitts and Nevis, the average seawater temperature in September is 29°C (84.2°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in September in Nevis?

In September, the average day length in Nevis is 12h and 14min.

What time are sunrise and sunset in September in Nevis?

In September, on the first day of the month, sunrise is at 05:56 and sunset at 18:23. On the last day of the month, sunrise is at 06:00 and sunset at 17:59 AST.

What is the month with the least sunshine in Nevis?

January through March, May through December, with an average of 8h of sunshine, are months with the least sunshine in Nevis.

How many hours of sunshine does Nevis have in September?

In September, the average sunshine duration in Nevis, Saint Kitts and Nevis, is 8h.

What is the month with the highest UV index in Nevis?

March through September, with an average maximum UV index of 12, are months with the highest UV index in Nevis, Saint Kitts and Nevis.

What is the UV index intensity in September in Nevis?

In September, the average daily maximum UV index in Nevis, Saint Kitts and Nevis, is 12. A UV Index of 11, and more, symbolizes an excessive health risk from exposure to Sun's UV rays.

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Year J F M A M J J A September O N D

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Average high temperature

31°C 87.8°F

Average low temperature

Average rainfall

Average rainfall days

Average sea temperature

Average daylight

Average sunshine

Average UV index

Average temperature in September
Nevis, Saint Kitts and Nevis

Average high temperature in September: 31°C

The warmest months (with the highest average high temperature) are June, July, August, September and October (31°C).
The months with the lowest average high temperature are January and February (28°C).

Average low temperature in September: 25°C

The months with the highest average low temperature are June, July, August, September and October (25°C).
The coldest months (with the lowest average low temperature) are January and February (22°C).

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Average rainfall in September
Nevis, Saint Kitts and Nevis

Average rainfall in September: 139mm

The wettest month (with the highest rainfall) is September (139mm).
The driest month (with the least rainfall) is March (36mm).

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Average rainfall days in September
Nevis, Saint Kitts and Nevis

Average rainfall days in September: 18 days

The months with the highest number of rainy days are October, November and December (20 days).
The months with the least rainy days are March, April and June (13 days).

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Average sea temperature in September
Nevis, Saint Kitts and Nevis

Average sea temperature in September: 29°C

The best months for swimming (with the highest average sea temperature) are September and October (29°C).
The coldest months (with the lowest average sea temperature) are January, February and March (26°C).

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Average daylight in September /
Average sunshine in September
Nevis, Saint Kitts and Nevis

Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 6min).

Average sunshine in September: 8h

The month with the most sunshine is April (Average sunshine: 9h).
The months with the least sunshine are January, February, March, May, June, July, August, September, October, November and December (Average sunshine: 8h).

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Average UV index in September
Nevis, Saint Kitts and Nevis

Average UV index in September: 12

The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The months with the lowest UV index are January and December (UV index 8).

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September weather forecast
Nevis, Saint Kitts and Nevis

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