September weather forecast
Castara, Trinidad and Tobago

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Weather in September

As September arrives, Castara witnesses a reduction in rainfall to 115mm (4.53"). The level of daylight slightly decreases, indicative of the fast-approaching autumn equinox. Moreover, the cloud cover lessens, implying brighter, clearer days. With relatively lower wind speeds throughout the month, there's a sense of calmness accompanying the everyday climate. Thus, September stands out as a bridging month marking the slow retreat of the monsoon.

Temperature

September, known for its average high temperature of 28.8°C (83.8°F) and an average low temperature of 27.9°C (82.2°F), is the warmest month in Castara.

Heat index

The heat index value for September is evaluated at a tropical 33°C (91.4°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

The least humid month is September, with an average relative humidity of 76%.

Rainfall

In Castara, in September, it is raining for 23.3 days, with typically 115mm (4.53") of accumulated precipitation. In Castara, Trinidad and Tobago, during the entire year, the rain falls for 282.6 days and collects up to 1136mm (44.72") of precipitation.

Daylight

In September, the average length of the day in Castara is 12h and 11min.
On the first day of September in Castara, sunrise is at 05:52 and sunset at 18:12. On the last day of the month, sunrise is at 05:51 and sunset at 17:53 AST.

Sunshine

In Castara, the average sunshine in September is 10.3h.

UV index

The months with the highest UV index in Castara are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 7 in September translates into these instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

What is the warmest month in Castara?

During the warmest month in Castara, September, temperatures average a high of 28.8°C (83.8°F) and a low of 27.9°C (82.2°F).

How hot is it in Castara in September?

The average high-temperature and low-temperature in Castara during September are 28.8°C (83.8°F) and 27.9°C (82.2°F) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 33°C (91.4°F).

What is the least humid month in Castara?

The least humid month in Castara, Trinidad and Tobago, is September, with an average relative humidity of 76%.

What is the average humidity in September in Castara?

The average relative humidity in September in Castara is 76%.

How many days does it rain in September in Castara?

In Castara, Trinidad and Tobago, in September, it is raining for 23.3 days, with typically 115mm (4.53") of accumulated precipitation.

How many hours of daylight does Castara have in September?

In Castara, the average day length in September is 12h and 11min.

When are sunrise and sunset in September in Castara?

On the first day of September in Castara, Trinidad and Tobago, sunrise is at 05:52 and sunset at 18:12. On the last day of the month, sunrise is at 05:51 and sunset at 17:53 AST.

How long on average sun shines in September in Castara?

In Castara, Trinidad and Tobago, the average sunshine duration in September is 10.3h.

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

The months with the highest UV index in Castara, Trinidad and Tobago, are January through December, with an average maximum UV index of 7.

What are the months with the lowest UV index in Castara?

The months with the lowest UV index in Castara, Trinidad and Tobago, are January through December, with an average maximum UV index of 7.

What is the UV index reading in September in Castara?

In Castara, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.

Average temperature in September
Castara, Trinidad and Tobago

Average temperature in September - Castara, Trinidad and Tobago
  • Average high temperature in September: 28.8°C

The warmest month (with the highest average high temperature) is September (28.8°C).
The month with the lowest average high temperature is February (26.7°C).

  • Average low temperature in September: 27.9°C

The month with the highest average low temperature is September (27.9°C).
The coldest month (with the lowest average low temperature) is February (25.8°C).

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Average pressure in September
Castara, Trinidad and Tobago

Average pressure in September - Castara, Trinidad and Tobago
  • Average pressure in September: 1011.9mbar

The month with the highest atmospheric pressure is June (1013.9mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).

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Average wind speed in September
Castara, Trinidad and Tobago

Average wind speed in September - Castara, Trinidad and Tobago
  • Average wind speed in September: 20.3km/h

The windiest month (with the highest average wind speed) is February (28.4km/h).
The calmest month (with the lowest average wind speed) is September (20.3km/h).

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Average humidity in September
Castara, Trinidad and Tobago

Average humidity in September - Castara, Trinidad and Tobago
  • Average humidity in September: 76%

The months with the highest relative humidity are May, June and July (79%).
The month with the lowest relative humidity is September (76%).

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Average rainfall in September
Castara, Trinidad and Tobago

Average rainfall in September - Castara, Trinidad and Tobago
  • Average rainfall in September: 115mm

The wettest month (with the highest rainfall) is October (150mm).
The driest month (with the least rainfall) is April (37mm).

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Average rainfall days in September
Castara, Trinidad and Tobago

Average rainfall days in September - Castara, Trinidad and Tobago
  • Average rainfall days in September: 23.3 days

The month with the highest number of rainy days is July (27.5 days).
The month with the least rainy days is April (18.7 days).

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Average daylight in September /
Average sunshine in September
Castara, Trinidad and Tobago

Average daylight in September / Average sunshine in September - Castara, Trinidad and Tobago
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).

  • Average sunshine in September: 10h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).

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Average sunshine days in September
Castara, Trinidad and Tobago

Average sunshine days in September - Castara, Trinidad and Tobago
  • Average sunshine days in September: 5 days

The months with the most sunshine days are February and April (5.2 days).
The month with the least sunshine days is June (2 days).

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Average UV index in September
Castara, Trinidad and Tobago

Average UV index in September - Castara, Trinidad and Tobago
  • Average UV index in September: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

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Average cloud cover in September
Castara, Trinidad and Tobago

Average cloud cover in September - Castara, Trinidad and Tobago
  • Average cloud cover in September: 35

The month with the most cloud cover is June (Cloud cover 45).
The month with the least cloud cover is September (Cloud cover 35).

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Average visibility in September
Castara, Trinidad and Tobago

Average visibility in September - Castara, Trinidad and Tobago
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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Castara, Trinidad and Tobago

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