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Contents
- The climate of Castara
- The best time to visit Castara
- The worst time to visit Castara
- Spring weather in Castara
- Summer weather in Castara
- Autumn weather in Castara
- Winter weather in Castara
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
The climate of Castara
Occupying a tropical region on the island of Trinidad and Tobago, Castara marvels under a Tropical Monsoon climate. This is according to the Köppen climate classification which specifies its indicator as 'Am'. Castara's geographical position allows it to enjoy warm tropical weather throughout the year with minimal temperature variations.
The striking feature about Castara's weather is undeniably its steady temperatures. High temperatures range from 26.7°C (80.1°F) to 28.8°C (83.8°F) while low temperatures vary from a minimum of 25.8°C (78.4°F) to a maximum of 27.9°C (82.2°F).
Rainfall also persists throughout the year, showing a notable increase from May to November. August and November receive the highest rainfall, 150mm (5.91") and 144mm (5.67") respectively, while February and March register the least amount of rainfall, both at 41mm (1.61"). Consequently, over these months, the number of rainfall days increase, peaking in July at 27.5 days, then decreasing towards the end and start of the year.
Relative humidity averages hover around 77% to 79% annually. One can anticipate cloud cover of between 35% to 45% throughout the year.
The striking feature about Castara's weather is undeniably its steady temperatures. High temperatures range from 26.7°C (80.1°F) to 28.8°C (83.8°F) while low temperatures vary from a minimum of 25.8°C (78.4°F) to a maximum of 27.9°C (82.2°F).
Rainfall also persists throughout the year, showing a notable increase from May to November. August and November receive the highest rainfall, 150mm (5.91") and 144mm (5.67") respectively, while February and March register the least amount of rainfall, both at 41mm (1.61"). Consequently, over these months, the number of rainfall days increase, peaking in July at 27.5 days, then decreasing towards the end and start of the year.
Relative humidity averages hover around 77% to 79% annually. One can anticipate cloud cover of between 35% to 45% throughout the year.
The best time to visit Castara
Based on climate parameters, the ideal time to visit Castara extends from December to April. During these months, despite the persistent rainfall, the amount of rainfall is significantly lower, ranging between 37mm (1.46") and 67mm (2.64"). Moreover, favourable conditions include a relatively high amount of sunshine - standing at 10 hours per day from March to July, and daylight lasting between 11.5 hours to 12.4 hours, with April witnessing the longest daylight hours. The UV index remains at a consistent 7 all year round, necessitating regular use of sun protection.
The worst time to visit Castara
The period from May to November experiences higher rainfall and notably more rain days, reaching a peak in July and November with 27.5 and 25.3 days of rainfall days respectively. For tourists who prefer less wet recreational activities, this could pose a challenge. Despite the increase in rainfall, the average temperature doesn't vary remarkably. It is worth noting that the wind gust speeds pick up during these months reaching highs of 39.4km/h (24.5mph) in June.
Spring weather in Castara
When speaking of Castara's spring season, that is March, April, and May, the temperatures consistently sit around the high 20s°C. A gradual increase in rainfall is notable from 41mm (1.61") in March up to 58mm (2.28") in May coupled with a slight cloud cover increase from 40% to 43%. Wind speeds also experience a modest decrease from 26.7km/h (16.6mph) in March to 27.1km/h (16.8mph) in May. Conversely, daylight hours increase from 12.1 hours to 12.6 hours and maintain steady levels of 10 hours of sunshine daily.
Summer weather in Castara
Summer months see a rise in various parameters. From June to August, rainfall intensifies,and it ranges from 109mm (4.29") in June to a high of 133mm (5.24") in August. Nevertheless, sunshine remains ample with 10 hours in June and decreasing to 9.6 hours by August. The consistent tropical temperatures also continue with highs ranging from 27.6°C (81.7°F) in June to 28.4°C (83.1°F) in August.
Autumn weather in Castara
September sets the stage for autumn where temperatures continue to remain tropical, averaging high temperatures around 28°C (82.4°F). Rainfall, however, reaches its peak at 150mm (5.91") in October, and decreases to 144mm (5.67") in November. Interestingly, sunshine hours decrease but cloud coverage percentage remains relatively constant around 40%.
Winter weather in Castara
Winter in Castara, spans from December to February, and comes with moderate temperatures with highs oscillating between 27°C (80.6°F) and 27.6°C (81.7°F). Rainfall, on the other hand, decreases significantly to its annual low of 41mm (1.61") in February. Despite lower rainfall, cloud cover retains its consistency at 43%, whereas sunshine hours drop to 6.3 hours in December. It's noteworthy that wind speed increases during this period from 24km/h (14.9mph) to 27.4km/h (17mph) creating a slightly more windy atmosphere.
Weather in January
During the initial month of the year in Castara, Trinidad and Tobago, the weather is characterized by warm tropical conditions. A notable feature in January is the interruption of sunshine by frequent showers, with rainfall reaching up to 67mm (2.64"). Weather in January »
Weather in February
Moving into February, the weather in Castara remains relatively consistent. One slight shift in the conditions centers around the rainfall reading, which shows a decrease, settling at 41mm (1.61"). UV index remains the same, as with visibility, suggesting that despite frequent showers, the atmosphere remains clear. Weather in February »
Weather in March
As spring approaches, the weather in Castara continues to favor warmth and moisture. The amount of rainfall stays consistent at 41mm (1.61"), similar to February, while wind speed slightly declines. A slight increase in daylight hours is observed, a signal that the equinox is right around the corner. Weather in March »
Weather in April
April sees the weather in Castara change subtly as the spring equinox passes. Rainfall totals decrease slightly to 37mm (1.46") while wind speeds also show a small reduction. Daylight hours increase further, heralding the arrival of longer days. Weather in April »
Weather in May
As May greets Castara, a visible shift is noticed in the weather patterns. Rainfall amounts increase to 58mm (2.28"), indicating the start of the region's wetter season. Despite having more clouds and rain showers, they provide a soothing effect against the intensifying heat. Weather in May »
Weather in June
In June, the atmosphere descends further into the wetter season, characterized by heavier showers. Notably, Castara receives up to 109mm (4.29") of rainfall, signifying substantial wet conditions. With an increase in cloud coverage, a slight reduction in sunshine hours is noted. Weather in June »
Weather in July
The weather in Castara persists with its wet trend in July. The rainfall levels peak further at 137mm (5.39"), accompanied by higher cloud cover. Despite the high rainfall, temperatures remain steady, ensuring a warm and moist atmosphere. Weather in July »
Weather in August
August continues the trend of high rainfall in Castara, though it decreases slightly to 133mm (5.24"). Even with substantial rainfall, it does not tip the balance away from the warm, tropical conditions. The wind speeds significantly reduce, adding to the calmness of the season. Weather in August »
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. Weather in September »
Weather in October
October marks a shift in weather patterns in Castara, with rainfall increasing again to 150mm (5.91"). Despite the increase in rain, the warm temperatures persist, ensuring a comforting environment. Cloud cover and humidity levels also rise, reflecting the distinct tropical climate. Weather in October »
Weather in November
In November, the weather in Castara begins to transition, with rainfall decreasing to 144mm (5.67"). Despite the decrease in rainfall, the cloud cover and humidity levels remain unchanged. Also, the daylight hours lessen, indicating the proximity of the winter solstice. Weather in November »
Weather in December
With December, the weather in Castara delineates a return to lower rainfall, dropping to 104mm (4.09"). The duration of sunshine decreases significantly, marking shorter days linked to the arrived winter solstice. However, shortened daylight does not signify a dip in temperature, and warm conditions persist. Weather in December »
Updated: Feb 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How many days does it rain in Castara?
Throughout the year, there are 282.6 rainfall days, and 1136mm (44.72") of precipitation is accumulated.
When is the highest UV index in Castara?
The months with the highest UV index in Castara are January through December, with an average maximum UV index of 7.
What is the month 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 month is the coldest in Castara?
February is the coldest month of the year in Castara, Trinidad and Tobago, registering average temperatures as high as 26.7°C (80.1°F) and as low as 25.8°C (78.4°F).
What is the driest month in Castara?
The month with the least rainfall in Castara is April, when the rain falls for 18.7 days and typically collects 37mm (1.46") of precipitation.
What are the most humid months in Castara?
The months with the highest humidity are May through July, with an average relative humidity of 79%.
When are the longest days in Castara?
With an average of 12h and 48min of daylight, June has the longest days of the year in Castara, Trinidad and Tobago.
What month has the most sunshine in Castara?
With an average of 10.6h of sunshine, August has the most sunshine of the year in Castara.
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).
What is the least humid month in Castara?
The least humid month in Castara is September, with an average relative humidity of 76%.
What is the rainiest month in Castara?
The month with the most rainfall in Castara is October, when the rain falls for 24.8 days and typically aggregates up to 150mm (5.91") of precipitation.
What is the month with the shortest days in Castara?
December has the shortest days of the year in Castara, Trinidad and Tobago, with an average of 11h and 30min of daylight.
Is there Daylight Saving Time (DST) in Castara?
Castara, Trinidad and Tobago, does not observe Daylight Saving Time (DST). AST timezone is used throughout the entire year.
What is the month with the least sunshine in Castara?
The month with the least sunshine is December, with an average of 6.3h of sunshine.
Average temperature
Castara, Trinidad and Tobago
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).
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).
Average pressure
Castara, Trinidad and Tobago
- Average pressure in January:
1013.6mbar - Average pressure in February:
1013.6mbar - Average pressure in March:
1013.5mbar - Average pressure in April:
1013.2mbar - Average pressure in May:
1013.3mbar - Average pressure in June:
1013.9mbar
- Average pressure in July:
1013.7mbar - Average pressure in August:
1012.7mbar - Average pressure in September:
1011.9mbar - Average pressure in October:
1010.9mbar - Average pressure in November:
1010.5mbar - Average pressure in December:
1012.4mbar
The month with the highest atmospheric pressure is June (1013.9mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).
Average wind speed
Castara, Trinidad and Tobago
- Average wind speed in January:
27.5km/h - Average wind speed in February:
28.4km/h - Average wind speed in March:
26.7km/h - Average wind speed in April:
26.2km/h - Average wind speed in May:
27.1km/h - Average wind speed in June:
27.6km/h
- Average wind speed in July:
24.8km/h - Average wind speed in August:
21.2km/h - Average wind speed in September:
20.3km/h - Average wind speed in October:
22.4km/h - Average wind speed in November:
24km/h - Average wind speed in December:
27.4km/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).
Average humidity
Castara, Trinidad and Tobago
The months with the highest relative humidity are May, June and July (79%).
The month with the lowest relative humidity is September (76%).
Average rainfall
Castara, Trinidad and Tobago
- Average rainfall in July:
137mm - Average rainfall in August:
133mm - Average rainfall in September:
115mm - Average rainfall in October:
150mm - Average rainfall in November:
144mm - Average rainfall in December:
104mm
The wettest month (with the highest rainfall) is October (150mm).
The driest month (with the least rainfall) is April (37mm).
Average rainfall days
Castara, Trinidad and Tobago
- Average rainfall days in January:
23.9 days - Average rainfall days in February:
19.3 days - Average rainfall days in March:
19.3 days - Average rainfall days in April:
18.7 days - Average rainfall days in May:
21.8 days - Average rainfall days in June:
25.3 days
- Average rainfall days in July:
27.5 days - Average rainfall days in August:
26.3 days - Average rainfall days in September:
23.3 days - Average rainfall days in October:
24.8 days - Average rainfall days in November:
25.3 days - Average rainfall days in December:
27.1 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).
Average daylight / Average sunshine
Castara, Trinidad and Tobago
- Average daylight in January:
11h and 4min - Average daylight in February:
11h and 5min - Average daylight in March:
12h and 1min - Average daylight in April:
12h and 2min - Average daylight in May:
12h and 4min - Average daylight in June:
12h and 5min
- Average daylight in July:
12h and 4min - Average daylight in August:
12h and 3min - Average daylight in September:
12h and 1min - Average daylight in October:
11h and 5min - Average daylight in November:
11h and 4min - Average daylight in December:
11h and 3min
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 January:
7h and 2min - Average sunshine in February:
8h and 2min - Average sunshine in March:
8h and 2min - Average sunshine in April:
10h and 0min - Average sunshine in May:
9h and 5min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 4min - Average sunshine in September:
10h and 2min - Average sunshine in October:
8h and 3min - Average sunshine in November:
7h and 2min - Average sunshine in December:
6h 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).
Average sunshine days
Castara, Trinidad and Tobago
- Average sunshine days in January:
4.2 days - Average sunshine days in February:
5.2 days - Average sunshine days in March:
4.9 days - Average sunshine days in April:
5.2 days - Average sunshine days in May:
3.5 days - Average sunshine days in June:
2 days
- Average sunshine days in July:
2.3 days - Average sunshine days in August:
2.4 days - Average sunshine days in September:
5 days - Average sunshine days in October:
4.2 days - Average sunshine days in November:
2.4 days - Average sunshine days in December:
2.2 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).
Average UV index
Castara, Trinidad and Tobago
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).
Average cloud cover
Castara, Trinidad and Tobago
The month with the most cloud cover is June (Cloud cover 45).
The month with the least cloud cover is September (Cloud cover 35).
Average visibility
Castara, Trinidad and Tobago
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).
