January Weather in Carlsbad, United States

Last updated: June 24, 2025

In January, the average temperature in Carlsbad, United States hovers around 8°C (47°F). Expect temperature swings where the minimum can dip to -10°C (14°F), while the maximum can reach 27°C (80°F). This month also brings about 23 mm (0.9 in) of precipitation over approximately 3 days, contributing to a 74% average humidity, making it a unique experience for visitors!

January Temperature in Carlsbad

In January in Carlsbad, the average temperature is 8°C (47°F). The maximum can reach 27°C (80°F) and the minimum can be as low as -10°C (14°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

January Weather in Carlsbad: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Carlsbad, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Carlsbad, January typically has an average temperature of 8°C (47°F), with highs reaching up to 27°C (80°F) and lows dropping to around -10°C (14°F).

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

January Precipitation in Carlsbad

In Carlsbad in January, the precipitation amount is 23 mm (0.9 in) over the course of 3 days.

January Precipitation Trends in Carlsbad

The chart displays monthly precipitation patterns in Carlsbad, 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 Carlsbad, January typically receives around 23 mm (0.9 inches) of precipitation spread over approximately 3 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 Carlsbad

In Carlsbad in January humidity is 74%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that seeps into your bones, making every outdoor excursion feel more invigorating yet slightly uncomfortable, as the moisture in the air intensifies the cold and leaves you yearning for warmer layers.

January Average Humidity in Carlsbad

This chart illustrates the average monthly humidity levels in Carlsbad, 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 Carlsbad is approximately 74%, 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 Carlsbad

In Carlsbad 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 Carlsbad.

Maximum UV Index Levels in Carlsbad for January

The chart shows the monthly maximum UV Index (UVI) for Carlsbad 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 Carlsbad typically reaches 5, which falls under the moderate exposure category.

Data source: Carlsbad 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 Carlsbad Compares to Other Months

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

This table compares monthly weather conditions in Carlsbad, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	23 mm (0.9 inches)	74%	moderate
February Weather	10°C (50°F)	22 mm (0.9 inches)	74%	high
March Weather	16°C (61°F)	48 mm (1.9 inches)	68%	very high
April Weather	19°C (67°F)	51 mm (2.0 inches)	70%	extreme
May Weather	24°C (75°F)	101 mm (4.0 inches)	77%	extreme
June Weather	27°C (82°F)	47 mm (1.8 inches)	76%	extreme
July Weather	29°C (85°F)	21 mm (0.8 inches)	66%	extreme
August Weather	29°C (84°F)	34 mm (1.3 inches)	60%	extreme
September Weather	25°C (78°F)	73 mm (2.9 inches)	67%	extreme
October Weather	19°C (67°F)	51 mm (2.0 inches)	72%	very high
November Weather	13°C (56°F)	28 mm (1.1 inches)	83%	high
December Weather	10°C (51°F)	25 mm (1.0 inches)	85%	moderate