January Weather in Port Sulphur, United States

Last updated: June 24, 2025

In January, the average temperature in Port Sulphur, United States hovers around 14°C (57°F). Expect temperatures to range from a chilly 0°C (32°F) to a pleasant 24°C (75°F). However, be prepared for some rain, as precipitation averages 106 mm (4.2 in) over 8 days. With an average humidity of 80%, the air can feel quite moist.

January Temperature in Port Sulphur

In January in Port Sulphur, the average temperature is 14°C (57°F). The maximum can reach 24°C (75°F), while the minimum can dip as low as 0°C (32°F). This makes it an ideal time for travelers to enjoy a variety of outdoor activities while packing for both warm and cooler weather.

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

The chart illustrates January 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, January typically has an average temperature of 14°C (57°F), with highs reaching up to 24°C (75°F) and lows dropping to around 0°C (32°F).

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

January Precipitation in Port Sulphur

In Port Sulphur in January, the precipitation amount is 106 mm (4.2 in) over a span of 8 days.

January Precipitation Trends in Port Sulphur

The chart displays monthly precipitation patterns in Port Sulphur, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Port Sulphur, January typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 8 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Port Sulphur

In Port Sulphur in January, humidity is 80%. With an average temperature of 14°C (57°F), this humidity feels like a warm, damp blanket wrapping around you, making travel uncomfortable and sticky, as sweat clings to your skin and the air feels heavy with moisture.

January Average Humidity in Port Sulphur

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

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

January UV Index in Port Sulphur

In Port Sulphur in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Port Sulphur.

Maximum UV Index Levels in Port Sulphur for January

The chart shows the monthly maximum UV Index (UVI) for Port Sulphur in January, 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 January, the maximum UV index in Port Sulphur typically reaches 5, which falls under the moderate exposure category.

Data source: Port Sulphur January 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 January 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 January’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 January’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