September weather forecast
The Valley, Anguilla

The weather in September closely mirrors that of August, maintaining the 110mm (4.33") rainfall trend and holding steady with sunny climate conditions. Even with a higher frequency of rain, The Valley remains an inviting destination for travelers seeking a blend of sun and showers. The sea continues to stay warm, providing a soothing counterbalance to the sunny days. As September progresses, daylight hours start to shorten, hinting at the impending arrival of autumn. Despite the slight decrease in daylight, the UV index holds at a constant 12, as it has for the vast majority of the year.

Temperature

The Valley experiences the peak of its temperatures in June through September, when the average high-temperatures rise to 31°C (87.8°F).

Heat index

The heat index value for September is calculated to be an extremely hot 40°C (104°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

February through April, June through September, with an average relative humidity of 76%, are the least humid months in The Valley.

Rainfall

The wettest months are August, September and November, with an average 110mm (4.33") of rainfall.

Sea temperature

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for all water activities, offering enjoyment without causing discomfort over extended periods.

Daylight

In September, the average length of the day in The Valley is 12h and 14min.
On the first day of September, sunrise is at 05:57 and sunset at 18:26. On the last day of the month, sunrise is at 06:02 and sunset at 18:01 AST.

Sunshine

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

UV index

The months with the highest UV index in The Valley are March through September, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum daily UV index of 12 during September morphs into the following directions:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Even if it's cloudy, generously apply and frequently reapply a sunscreen with no less than a 30 sun protection factor after each swim or outdoor exercise. Stay cautious! Sand and water reflections increase UV radiation potency.