March Weather in Port Sulphur, United States

Last updated: June 24, 2025

In March, the average temperature in Port Sulphur, United States is a pleasant 18°C (65°F). Expect a comfortable range, with minimums dipping to 6°C (42°F) and maximums reaching 25°C (77°F). However, be prepared for some rain, as the area experiences about 69 mm (2.7 in) of precipitation spread over 8 days, along with an average humidity of 79%.

March Temperature in Port Sulphur

In March in Port Sulphur, the average temperature is 18°C (65°F). The maximum can reach 25°C (77°F) and the minimum can be as low as 6°C (42°F). This climate makes it an ideal time for travelers to enjoy outdoor activities while experiencing mild and pleasant weather.

March Weather in Port Sulphur: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Port Sulphur, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Sulphur, March typically has an average temperature of 18°C (65°F), with highs reaching up to 25°C (77°F) and lows dropping to around 6°C (42°F).

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

March Precipitation in Port Sulphur

In Port Sulphur in March, the precipitation amount is 69 mm (2.7 in) that falls over a period of 8 days.

March Precipitation Trends in Port Sulphur

The chart displays monthly precipitation patterns in Port Sulphur, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Port Sulphur, March typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Port Sulphur

In Port Sulphur in March, humidity is 79%. With an average temperature of 18°C (65°F), this humidity feels like walking through a warm mist, making traveling slightly uncomfortable and sticky, but offering a refreshing escape when you find moments of shade or a breeze.

March Average Humidity in Port Sulphur

This chart illustrates the average monthly humidity levels in Port Sulphur, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Port Sulphur is approximately 79%, offering insight into how humid the weather typically is during this month.

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

March UV Index in Port Sulphur

In Port Sulphur in March, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Port Sulphur.

Maximum UV Index Levels in Port Sulphur for March

The chart shows the monthly maximum UV Index (UVI) for Port Sulphur in March, 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 March, the maximum UV index in Port Sulphur typically reaches 9, which falls under the very high exposure category.

Data source: Port Sulphur March 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 March Weather in Port Sulphur Compares to Other Months

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

This table compares monthly weather conditions in Port Sulphur, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	14°C (57°F)	106 mm (4.2 inches)	80%	moderate
February Weather	16°C (61°F)	91 mm (3.6 inches)	79%	very high
March Weather	18°C (65°F)	69 mm (2.7 inches)	79%	very high
April Weather	21°C (70°F)	107 mm (4.2 inches)	80%	extreme
May Weather	25°C (77°F)	119 mm (4.7 inches)	74%	extreme
June Weather	27°C (81°F)	195 mm (7.7 inches)	72%	extreme
July Weather	28°C (83°F)	238 mm (9.4 inches)	75%	extreme
August Weather	28°C (83°F)	272 mm (10.7 inches)	74%	extreme
September Weather	27°C (81°F)	162 mm (6.4 inches)	79%	extreme
October Weather	24°C (76°F)	124 mm (4.9 inches)	77%	very high
November Weather	19°C (66°F)	52 mm (2.1 inches)	81%	high
December Weather	16°C (61°F)	113 mm (4.4 inches)	83%	moderate