December Weather in San Fernando, Trinidad and Tobago

Last updated: August 31, 2025

In December, the average temperature in San Fernando, Trinidad and Tobago hovers around 26°C (79°F), with a comfortable minimum of 24°C (75°F) and a warm maximum of 29°C (85°F). Expect 105 mm (4.1 in) of precipitation spread across 20 days, contributing to an average humidity level of 80%. Dive into this tropical climate with plenty of vibrant days ahead!

December Temperature in San Fernando

In December in San Fernando, the average temperature is 26°C (79°F), with maximums reaching up to 29°C (85°F) and minimums dropping to as low as 24°C (75°F). It’s an ideal time for travelers seeking warm weather and pleasant conditions.

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

The chart illustrates December 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, December typically has an average temperature of 26°C (79°F), with highs reaching up to 29°C (85°F) and lows dropping to around 24°C (75°F).

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

December Precipitation in San Fernando

In San Fernando in December, the precipitation amount is 105 mm (4.1 in) over the course of 20 days.

December Precipitation Trends in San Fernando

The chart displays monthly precipitation patterns in San Fernando, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In San Fernando, December typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 20 days.

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

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Millimeters (mm) Inches (in)

December Humidity in San Fernando

In San Fernando in December humidity is 80%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket, making outdoor activities feel sticky and exhausting, potentially dampening the travel experience and necessitating frequent breaks to cool down and hydrate.

December Average Humidity in San Fernando

This chart illustrates the average monthly humidity levels in San Fernando, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in San Fernando is approximately 80%, offering insight into how humid the weather typically is during this month.

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

December UV Index in San Fernando

In San Fernando in December, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in San Fernando.

Maximum UV Index Levels in San Fernando for December

The chart shows the monthly maximum UV Index (UVI) for San Fernando in December, 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 December, the maximum UV index in San Fernando typically reaches 10, which falls under the very high exposure category.

Data source: San Fernando December 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 December 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 December’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 December’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