January Weather in Arroyo Grande, Mexico

Last updated: August 26, 2025

In Arroyo Grande, Mexico, the average temperature in January is a pleasant 24°C (75°F). Expect a minimum of 13°C (55°F) and the chance to enjoy warm days with a maximum of 34°C (94°F). During this time, you'll encounter 4 mm (0.2 in) of rain spread over just 1 day, and the average humidity remains around 70%.

January Temperature in Arroyo Grande

In January in Arroyo Grande, the average temperature is 24°C (75°F). Maximums can reach 34°C (94°F) and minimums can be as low as 13°C (55°F). This makes it an ideal time to explore outdoor activities while enjoying mild evenings and warm days.

January Weather in Arroyo Grande: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Arroyo Grande, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arroyo Grande, January typically has an average temperature of 24°C (75°F), with highs reaching up to 34°C (94°F) and lows dropping to around 13°C (55°F).

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

January Precipitation in Arroyo Grande

In Arroyo Grande in January, the precipitation amount is 4 mm (0.2 in) during 1 day.

January Precipitation Trends in Arroyo Grande

The chart displays monthly precipitation patterns in Arroyo Grande, 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 Arroyo Grande, January typically receives around 4 mm (0.2 inches) of precipitation spread over approximately 1 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Arroyo Grande

In Arroyo Grande in January, humidity is 70%. With an average temperature of 24°C (75°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities a bit sluggish and sticky, ideal for leisurely strolls but requiring plenty of hydration.

January Average Humidity in Arroyo Grande

This chart illustrates the average monthly humidity levels in Arroyo Grande, 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 Arroyo Grande is approximately 70%, 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 Arroyo Grande

In Arroyo Grande in January, 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 Arroyo Grande.

Maximum UV Index Levels in Arroyo Grande for January

The chart shows the monthly maximum UV Index (UVI) for Arroyo Grande 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 Arroyo Grande typically reaches 9, which falls under the very high exposure category.

Data source: Arroyo Grande 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 Arroyo Grande Compares to Other Months

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

This table compares monthly weather conditions in Arroyo Grande, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (75°F)	4 mm (0.2 inches)	70%	very high
February Weather	25°C (77°F)	4 mm (0.2 inches)	64%	extreme
March Weather	27°C (81°F)	2 mm (0.1 inches)	54%	extreme
April Weather	28°C (83°F)	1 mm (0.0 inches)	61%	extreme
May Weather	29°C (84°F)	31 mm (1.2 inches)	75%	extreme
June Weather	27°C (81°F)	172 mm (6.8 inches)	83%	extreme
July Weather	26°C (80°F)	177 mm (7.0 inches)	83%	extreme
August Weather	26°C (79°F)	231 mm (9.1 inches)	85%	extreme
September Weather	26°C (78°F)	227 mm (8.9 inches)	85%	extreme
October Weather	26°C (78°F)	146 mm (5.8 inches)	79%	extreme
November Weather	25°C (77°F)	35 mm (1.4 inches)	76%	very high
December Weather	24°C (75°F)	5 mm (0.2 inches)	74%	very high