May weather forecast
San Fernando, Trinidad and Tobago

May ushers in a significant shift in San Fernando's climatic pattern. The rise in temperatures witnessed over the previous months becomes more pronounced, and there is a discernible increase in relative humidity. The locals prepare for the approaching rainy season by the end of this month. The recorded highest and lowest temperatures figure between 29.8°C (85.6°F) and 26.2°C (79.2°F). This month also experienced a slightly higher rainfall of 20mm (0.79") throughout 13 days.

Temperature

With the onset of May in San Fernando, a modest change to a still warm 29.8°C (85.6°F) from April's 29.6°C (85.3°F) is noted in high-temperature. Consistently, San Fernando reports average nighttime temperatures of 26.2°C (79.2°F) during May, a marginal step down from its daytime highs.

Heat index

The heat index value during May is appraised at a fiery hot 36°C (96.8°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Heat index data is primarily for areas with shade and subjected to light winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In San Fernando, the average relative humidity in May is 75%.

Rainfall

In San Fernando, in May, it is raining for 13 days, with typically 20mm (0.79") of accumulated precipitation. In San Fernando, during the entire year, the rain falls for 202.6 days and collects up to 599mm (23.58") of precipitation.

Sea temperature

In May, the average sea temperature in San Fernando is 28°C (82.4°F).
Note: For activities in the water such as swimming or diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal for prolonged enjoyment without discomfort.

Daylight

In San Fernando, Trinidad and Tobago, the average length of the day in May is 12h and 36min.
On the first day of May in San Fernando, sunrise is at 05:47 and sunset at 18:17. On the last day of the month, sunrise is at 05:43 and sunset at 18:24 AST.

Sunshine

In May, the average sunshine is 10.3h.

UV index

The months with the highest UV index 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 in San Fernando. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index of 7 during May leads to these instructions:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Alert! UV radiation becomes sharper due to reflections from sand and water.