May Weather in San Fernando, Trinidad and Tobago

Last updated: August 31, 2025

In May, the average temperature in San Fernando, Trinidad and Tobago reaches a warm 27°C (81°F). Expect a minimum of 24°C (76°F) and a maximum of 31°C (88°F), creating an inviting climate. However, be prepared for some rain, as the region experiences an average precipitation of 73 mm (2.9 in) over 14 days. With an average humidity of 76%, the air feels pleasantly tropical.

May Temperature in San Fernando

In May in San Fernando, the average temperature is 27°C (81°F), with a maximum that can reach 31°C (88°F) and a minimum that can be as low as 24°C (76°F). This mild and pleasant climate makes San Fernando an ideal destination for travelers seeking comfort and warmth during this time of year.

May Weather in San Fernando: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in San Fernando, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Fernando, May typically has an average temperature of 27°C (81°F), with highs reaching up to 31°C (88°F) and lows dropping to around 24°C (76°F).

Data source: Temperature data for San Fernando generated using information from the Copernicus Climate Change Service.

May Precipitation in San Fernando

In San Fernando in May, the total precipitation amount is 73 mm (2.9 in) over the course of 14 days.

May Precipitation Trends in San Fernando

The chart displays monthly precipitation patterns in San Fernando, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In San Fernando, May typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in San Fernando

In San Fernando in May, humidity is 76%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel stifling and sweat-inducing, which can be challenging for traveling.

May Average Humidity in San Fernando

This chart illustrates the average monthly humidity levels in San Fernando, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in San Fernando is approximately 76%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Fernando

In San Fernando in May, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Fernando, you can check here.

Maximum UV Index Levels in San Fernando for May

The chart shows the monthly maximum UV Index (UVI) for San Fernando in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in San Fernando typically reaches 14, which falls under the extreme exposure category.

Data source: San Fernando May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How May Weather in San Fernando Compares to Other Months

Weather in San Fernando varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in San Fernando, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in San Fernando, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (78°F)	46 mm (1.8 inches)	78%	extreme
February Weather	26°C (79°F)	24 mm (0.9 inches)	77%	extreme
March Weather	26°C (79°F)	34 mm (1.3 inches)	76%	extreme
April Weather	27°C (80°F)	26 mm (1.0 inches)	75%	extreme
May Weather	27°C (81°F)	73 mm (2.9 inches)	76%	extreme
June Weather	27°C (80°F)	158 mm (6.2 inches)	80%	extreme
July Weather	27°C (80°F)	179 mm (7.0 inches)	83%	extreme
August Weather	27°C (81°F)	188 mm (7.4 inches)	80%	extreme
September Weather	27°C (81°F)	147 mm (5.8 inches)	79%	extreme
October Weather	27°C (81°F)	174 mm (6.9 inches)	79%	extreme
November Weather	27°C (80°F)	136 mm (5.3 inches)	81%	extreme
December Weather	26°C (79°F)	105 mm (4.1 inches)	80%	very high