January Weather in San Diego

Last updated: March 2, 2024

The weather in San Diego, Mexico, during January is characterized by an average temperature of 21°C (70°F). Highs can soar to 32°C (90°F), while lows may dip to 11°C (53°F). Typically, the humidity level in San Diego throughout January hovers around 76%.

11°C (53°F)

Minimum temperature

21°C (70°F)

Average temperature

32°C (90°F)

Maximum temperature

76%

Humidity

Precipitation and Sunshine hours

In January, San Diego averages 8 mm (0.3 inches) of rainfall, typically over the course of 1 rainy days. The month enjoys an average of 11 hours 17 minutes of daylight, with the sun shining for approximately 8 hours 7 minutes each day. Additionally, there is a 53% probability of sunny days during this period.

8 mm (0.3 inches)

Precipitation

1 rainy days

Rainy days

8 hours 7 minutes

Sunshine hours

53%

Chance of sun

UV Index

In January, the UV Index in San Diego reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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	1	2	4	6	9	10	10	8	5	2	1	0	0
Exposure	Low		Moderate	High	VeryHigh				Moderate	Low
Time to burn	45 min		30 min	25 min	15 min				30 min	45 min