January Weather in San Juan Vallarta

Last updated: March 2, 2024

The weather in San Juan Vallarta, Mexico, during January is characterized by an average temperature of 18°C (64°F). Highs can soar to 29°C (85°F), while lows may dip to 7°C (45°F). Typically, the humidity level in San Juan Vallarta throughout January hovers around 84%.

7°C (45°F)

Minimum temperature

18°C (64°F)

Average temperature

29°C (85°F)

Maximum temperature

84%

Humidity

Precipitation and Sunshine hours

In January, San Juan Vallarta averages 4 mm (0.2 inches) of rainfall, typically over the course of 1 rainy days. The month enjoys an average of 11 hours 8 minutes of daylight, with the sun shining for approximately 7 hours 51 minutes each day. Additionally, there is a 58% probability of sunny days during this period.

4 mm (0.2 inches)

Precipitation

1 rainy days

Rainy days

7 hours 51 minutes

Sunshine hours

58%

Chance of sun

UV Index

In January, the UV Index in San Juan Vallarta reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00
UVI	0	1	2	5	8	9	10	8	6	3	1	1	0
Exposure	Low			Moderate	VeryHigh				High	Moderate	Low
Time to burn	45 min			30 min	15 min				25 min	30 min	45 min