September weather forecast
Rockley, Barbados

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Weather in September

September is the wettest month in Rockley, with a whopping 159mm (6.26") of rainfall. The sporadic sun and passing showers paint a picture of a typical tropical climate. Yet, these light showers interspersed with sunshine don't deter visitors from exploring the city's stunning beaches and vibrant streets. As the month nears its end, the grip of the monsoon starts to loosen, hinting at the onset of a drier season. As September retreats, the city braces itself for the gradually shrinking rainfall figures in October.

Temperature

The shift into September records an average high-temperature of a still tropical 30°C (86°F), subtly varied from August's 31°C (87.8°F). An average low-temperature of 23°C (73.4°F) is observed in Rockley during the September nights.

Rainfall

In September, the rain falls for 15 days. Throughout September, 159mm (6.26") of precipitation is accumulated. In Rockley, Barbados, during the entire year, the rain falls for 156 days and collects up to 1238mm (48.74") of precipitation.

Sea temperature

The month with the warmest seawater is September, with an average sea temperature of 29°C (84.2°F).
Note: For swimming, diving, and similar activities, the water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered delightful, allowing for extended periods of enjoyment without discomfort.

Daylight

In Rockley, Barbados, the average length of the day in September is 12h and 12min.
On the first day of the month, sunrise is at 05:47 and sunset at 18:09. On the last day of September, in Rockley, Barbados, sunrise is at 05:47 and sunset at 17:48 AST.

Sunshine

The average sunshine in September is 8h.

UV index

The months with the highest UV index are February through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an excessive health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily high UV index of 12 in September leads to these guidelines:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Despite the clouds, sunscreen with an SPF of at least 30 should be used liberally and reapplied frequently, especially after a swim or outdoor workout. Watch out! Reflections from sand and water can surge UV radiation exposure.
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Frequently asked questions

Is it hot in Rockley during September?

The high-temperature, in September, in Rockley, is 30°C (86°F), while the low-temperature averages to 23°C (73.4°F).

How much does it rain in Rockley in September?

In September, in Rockley, Barbados, the rain falls for 15 days. Throughout September, 159mm (6.26") of precipitation is accumulated.

When is the sea warmest in Rockley?

September is the month with the warmest seawater in Rockley, with an average sea temperature of 29°C (84.2°F).

What is the sea water temperature in September in Rockley?

In Rockley, 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 Rockley?

In Rockley, Barbados, the average day length in September is 12h and 12min.

When is the sunrise / sunset in September in Rockley?

On the first day of September in Rockley, sunrise is at 05:47 and sunset at 18:09. On the last day of the month, sunrise is at 05:47 and sunset at 17:48 AST.

How many hours of sunshine does Rockley have in September?

In Rockley, the average sunshine duration in September is 8h.

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

The months with the highest UV index in Rockley, Barbados, are February through September, with an average maximum UV index of 12.

How high is the UV index in September in Rockley?

In September, the average daily maximum UV index is 12. A UV Index value of 11, and more, symbolizes an extreme health vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Rockley, Barbados

Average temperature in September - Rockley, Barbados
  • Average high temperature in September: 30°C

The warmest months (with the highest average high temperature) are May, June and August (31°C).
The month with the lowest average high temperature is January (28°C).

  • Average low temperature in September: 23°C

The months with the highest average low temperature are May, June, July, August, September, October and November (23°C).
The coldest months (with the lowest average low temperature) are January, February and March (21°C).

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Average rainfall in September
Rockley, Barbados

Average rainfall in September - Rockley, Barbados
  • Average rainfall in September: 159mm

The wettest month (with the highest rainfall) is October (178mm).
The driest month (with the least rainfall) is March (37mm).

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Average rainfall days in September
Rockley, Barbados

Average rainfall days in September - Rockley, Barbados
  • Average rainfall days in September: 15 days

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is April (7 days).

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Average sea temperature in September
Rockley, Barbados

Average sea temperature in September - Rockley, Barbados
  • Average sea temperature in September: 29°C

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

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Average daylight in September /
Average sunshine in September
Rockley, Barbados

Average daylight in September / Average sunshine in September - Rockley, Barbados
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).

  • Average sunshine in September: 8h

The months with the most sunshine are January, February, April and May (Average sunshine: 9h).
The month with the least sunshine is October (Average sunshine: 7h).

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Average UV index in September
Rockley, Barbados

Average UV index in September - Rockley, Barbados
  • Average UV index in September: 12

The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).

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Rockley, Barbados

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