Nevis
Saint Kitts and Nevis
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Nevis, Saint Kitts and Nevis

The lovely waterfront of Nevis in Saint Kitts and Nevis, with a distant view of mountains covered by low hanging clouds
The lovely waterfront of Nevis in Saint Kitts and Nevis, with a distant view of mountains covered by low hanging clouds
The first month of the autumn, September, is also a hot month in Nevis, Saint Kitts and Nevis, with average temperature ranging between max 31°C (87.8°F) and min 25°C (77°F).

Temperature

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

Rainfall

September is the month with the most rainfall. Rain falls for 18 days and accumulates 139mm (5.5") of precipitation.

Sea temperature

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Nevis.
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In September, the average length of the day in Nevis is 12.2h.

Sunshine

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

UV index

Months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 12 in September transform into the following instructions:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What are the warmest months in Nevis?

Warmest months in Nevis, Saint Kitts and Nevis, are June through October, with an average high-temperature of 31°C (87.8°F).

What is the temperature in September in Nevis?

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

How much does it rain in Nevis in September?

In Nevis, in September, during 18 rainfall days, 139mm (5.5") of precipitation is typically accumulated.

What is the wettest month in Nevis?

The month with the most rainfall is September when the rain falls for 18 days and typically aggregates up to 139mm (5.5") of precipitation.

What months are the sea warmest in Nevis?

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

What is the sea water temperature in September in Nevis?

In September, the average sea temperature 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 length of the day in Nevis, Saint Kitts and Nevis, is 12.2h.

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 in Nevis is 8h.

What are the months 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.

How high is the UV index in September in Nevis?

In September, the average daily maximum UV index is 12. A UV Index value of 11, and more, symbolizes an ultimate hazard to health from the exposure to the Sun's UV radiation.
Average temperature in September - Nevis, Saint Kitts and Nevis
  • Average high temperature in September: 31°C

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

  • Average low temperature in September: 25°C

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

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 lowest rainfall) is March (36mm).

Average rainfall days in September - Nevis, Saint Kitts and Nevis
  • Average rainfall days in September: 18 days

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

Average sea temperature in September - Nevis, Saint Kitts and Nevis
  • Average sea temperature in September: 29°C

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

Average daylight in September / Average sunshine in September - Nevis, Saint Kitts and Nevis
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 13.1h).
The month with shortest days is December (Average daylight: 11.1h).

  • Average sunshine in September: 8h

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

Average UV index in September - Nevis, Saint Kitts and Nevis
  • Average UV index in September: 12

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