March weather forecast
Port of Spain, Trinidad and Tobago

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The ancient building hosting the public library of the Port of Spain in Trinidad and Tobago
The ancient building hosting the public library of the Port of Spain in Trinidad and Tobago

Weather in March

March encounters marginally hotter conditions compared to February. The increase in temperature is accompanied by further deduction in average rainfall, signifying a transition from cooler to warmer quarters of the year in Port of Spain. This slightly drier and warmer month is opportune for beach-going and other outdoor water sports. Despite higher temperatures, the relative humidity remains manageable, keeping the overall feel of the weather comfortable. As is the trend in preceding months, March proves to be another popular month to experience the city's appeal.

Temperature

The weather during March records an average high-temperature of a hot 30.3°C (86.5°F), closely mirroring the preceding month. Port of Spain's nighttime temperature in March drops to an average of 20.7°C (69.3°F).

Heat index

March's mean heat index is computed to be a fiery hot 38°C (100.4°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Note that heat index values are valued for light wind and location in the shade. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The months with the lowest humidity in Port of Spain are March and April, with an average relative humidity of 77%.

Rainfall

The month with the least rainfall is March, when the rain falls for 6 days and typically collects 17mm (0.67") of precipitation.

Sea temperature

The months with the coldest seawater are February and March, with an average sea temperature of 26°C (78.8°F).
Note: Water temperatures from 25°C (77°F) to 29°C (84.2°F) make swimming, diving, and similar activities highly pleasurable and enjoyable for long periods without discomfort.

Daylight

In March, the average length of the day in Port of Spain is 12h and 5min.
On the first day of the month, sunrise is at 06:20 and sunset at 18:16. On the last day of March, sunrise is at 06:03 and sunset at 18:16 AST.

Sunshine

In Port of Spain, the average sunshine in March is 8h.

UV index

The months with the highest UV index are February through October, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In March, the maximum UV index of 12 translates into these guidelines:
Put into action all important safeguards, unprotected skin may burn swiftly. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Apply and frequently reapply a broad-spectrum SPF 30+ sunscreen after every two hours, or immediately after a swim or outdoor exercise. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.

Frequently asked questions

How hot is March in Port of Spain?

An average high-temperature, in March, in Port of Spain, is 30.3°C (86.5°F) and the average low-temperature is 20.7°C (69.3°F). In March, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, is computed to be 38°C (100.4°F).

What are the least humid months in Port of Spain?

March and April, with an average relative humidity of 77%, are the least humid months.

What is the average humidity in March in Port of Spain?

The average relative humidity in March in Port of Spain, Trinidad and Tobago, is 77%.

What is the driest month in Port of Spain?

March is the month with the least rainfall. Rain falls for 6 days and accumulates 17mm (0.67") of precipitation.

How much does it rain in Port of Spain in March?

In March, in Port of Spain, Trinidad and Tobago, the rain falls for 6 days. Throughout March, 17mm (0.67") of precipitation is accumulated.

What months are the sea coldest in Port of Spain?

The months with the coldest seawater are February and March, with an average sea temperature of 26°C (78.8°F).

What is the sea water temperature in March in Port of Spain?

In March, the average sea temperature in Port of Spain is 26°C (78.8°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Port of Spain have in March?

The average day length in March in Port of Spain is 12h and 5min.

When is the sunrise / sunset in March in Port of Spain?

In March, on the first day of the month, sunrise is at 06:20 and sunset at 18:16. On the last day of the month, in Port of Spain, Trinidad and Tobago, sunrise is at 06:03 and sunset at 18:16 AST.

How long on average sun shines in March in Port of Spain?

The average sunshine duration in March is 8h.

What is the month with the highest UV index in Port of Spain?

February through October, with an average maximum UV index of 12, are months with the highest UV index in Port of Spain.

What is the UV index reading in March in Port of Spain?

The average daily maximum UV index in March in Port of Spain is 12. A UV Index reading of 11, and higher, represents an excessive health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in March
Port of Spain, Trinidad and Tobago

Average temperature in March - Port of Spain, Trinidad and Tobago
  • Average high temperature in March: 30.3°C

The warmest month (with the highest average high temperature) is May (33.1°C).
The month with the lowest average high temperature is January (28°C).

  • Average low temperature in March: 20.7°C

The month with the highest average low temperature is June (23.3°C).
The coldest month (with the lowest average low temperature) is January (17°C).

Average humidity in March
Port of Spain, Trinidad and Tobago

Average humidity in March - Port of Spain, Trinidad and Tobago
  • Average humidity in March: 77%

The month with the highest relative humidity is November (86%).
The months with the lowest relative humidity are March and April (77%).

Average rainfall in March
Port of Spain, Trinidad and Tobago

Average rainfall in March - Port of Spain, Trinidad and Tobago
  • Average rainfall in March: 16.9mm

The wettest month (with the highest rainfall) is August (244mm).
The driest month (with the least rainfall) is March (16.9mm).

Average rainfall days in March
Port of Spain, Trinidad and Tobago

Average rainfall days in March - Port of Spain, Trinidad and Tobago
  • Average rainfall days in March: 6 days

The month with the highest number of rainy days is July (21 days).
The months with the least rainy days are March and April (6 days).

Average sea temperature in March
Port of Spain, Trinidad and Tobago

Average sea temperature in March - Port of Spain, Trinidad and Tobago
  • Average sea temperature in March: 26°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).

Average daylight in March /
Average sunshine in March
Port of Spain, Trinidad and Tobago

Average daylight in March / Average sunshine in March - Port of Spain, Trinidad and Tobago
  • Average daylight in March: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 30min).

  • Average sunshine in March: 8h and 0min

The month with the most sunshine is February (Average sunshine: 8h and 18min).
The month with the least sunshine is June (Average sunshine: 6h and 6min).

Average UV index in March
Port of Spain, Trinidad and Tobago

Average UV index in March - Port of Spain, Trinidad and Tobago
  • Average UV index in March: 12

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

Port of Spain, Trinidad and Tobago

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