Port of Spain
Trinidad and Tobago
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Port of Spain, Trinidad and Tobago

The ancient building hosting the public library of the Port of Spain in Trinidad and Tobago, with palm trees outside
The ancient building hosting the public library of the Port of Spain in Trinidad and Tobago, with palm trees outside
The first month of the spring, March, is a tropical month in Port of Spain, Trinidad and Tobago, with temperature in the range of an average low of 20.7°C (69.3°F) and an average high of 30.3°C (86.5°F).

Temperature

In Port of Spain, the average high-temperature in March is relatively the same as in February - a tropical 30.3°C (86.5°F). The average low-temperature, in Port of Spain, is 20.7°C (69.3°F).

Heat index

In March, the average heat index is evaluated at a very hot 37.7°C (99.9°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, clothing, wind), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

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 16.9mm (0.7") of precipitation.

Sea temperature

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

Daylight

The average length of the day in Port of Spain is 12.1h.

Sunshine

The average sunshine in March is 8h.

UV index

Months with the highest UV index are February through October, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 12 interpret into the following advice:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in March in Port of Spain?

The average high-temperature, in March, in Port of Spain, Trinidad and Tobago, is 30.3°C (86.5°F), while the average low-temperature is 20.7°C (69.3°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), that takes the relative humidity and factores it into the air temperature reading, in March is estimated at 37.7°C (99.9°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 in Port of Spain, Trinidad and Tobago.

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

The average relative humidity in March in Port of Spain is 77%.

How many days does it rain in March in Port of Spain?

In March, in Port of Spain, the rain falls for 6 days. Throughout March, 16.9mm (0.7") of precipitation is accumulated.

What is the driest month in Port of Spain?

The month with the least rainfall in Port of Spain is March when the rain falls for 6 days and typically collects 16.9mm (0.7") of precipitation.

When is the sea coldest in Port of Spain?

Months with the coldest seawater in Port of Spain, Trinidad and Tobago, 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 Port of Spain, Trinidad and Tobago, the average seawater temperature in March is 26°C (78.8°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

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

In March, the average length of the day is 12.1h.

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

The average sunshine in March in Port of Spain, Trinidad and Tobago, is 8h.

What are the months with the highest UV index in Port of Spain?

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

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

The average daily maximum UV index in March is 12. A UV Index value of 11, and more, symbolizes an ultimate hazard to health from unsafe exposure to the Sun's UV rays.
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: 77%

The month with the highest relative humidity is November (86%).
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: 16.9mm

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

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).
Months with the lowest number of rainy days are March and April (6 days).

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).
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: 12.1h

Months with the longest days are June and July (Average daylight: 12.7h).
The month with shortest days is December (Average daylight: 11.5h).

  • Average sunshine in March: 8h

The month with most sunshine is February (Average sunshine: 8.3h).
The month with least sunshine is June (Average sunshine: 6.1h).

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

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).