March weather forecast
Port of Spain, Trinidad and Tobago

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.