Last updated: June 24, 2025
In December, the average temperature in Mermentau, United States hovers around 14°C (57°F). Temperatures can range from a chilly -2°C (28°F) to a warm 28°C (83°F), providing a varied climate for visitors. Expect approximately 113 mm (4.5 in) of precipitation over about 10 days, accompanied by a high average humidity of 88%. Be prepared for all kinds of weather when exploring this vibrant destination!
In December in Mermentau, the average temperature is 14°C (57°F). Maximum temperatures can reach 28°C (83°F), while minimum temperatures can drop as low as -2°C (28°F). This variation in temperature makes Mermentau an ideal destination for travelers seeking both warm days and cooler nights.
In Mermentau in December, the total precipitation amount is 113 mm (4.5 in) over the course of 10 days.
In Mermentau in December humidity is 88%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and giving a sense of stickiness that can drain your energy quickly while exploring.
In Mermentau in December, 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 Mermentau.
UV Risk Categories
Weather in Mermentau varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mermentau, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 12°C (54°F) | 110 mm (4.3 inches) | 81% | moderate |
| February Weather | 15°C (59°F) | 104 mm (4.1 inches) | 81% | very high |
| March Weather | 18°C (65°F) | 65 mm (2.6 inches) | 79% | very high |
| April Weather | 20°C (69°F) | 141 mm (5.6 inches) | 80% | extreme |
| May Weather | 25°C (77°F) | 170 mm (6.7 inches) | 81% | extreme |
| June Weather | 27°C (81°F) | 146 mm (5.7 inches) | 76% | extreme |
| July Weather | 28°C (83°F) | 158 mm (6.2 inches) | 73% | extreme |
| August Weather | 28°C (83°F) | 183 mm (7.2 inches) | 71% | extreme |
| September Weather | 26°C (80°F) | 126 mm (5.0 inches) | 72% | very high |
| October Weather | 22°C (73°F) | 117 mm (4.6 inches) | 73% | very high |
| November Weather | 16°C (61°F) | 83 mm (3.3 inches) | 83% | high |
| December Weather | 14°C (57°F) | 113 mm (4.5 inches) | 88% | moderate |