September Weather in San Juan Viejo

Last updated: March 2, 2024

The weather in San Juan Viejo, Mexico, during September is characterized by an average temperature of 18°C (65°F). Highs can soar to 27°C (80°F), while lows may dip to 11°C (52°F). Typically, the humidity level in San Juan Viejo throughout September hovers around 85%.

11°C (52°F)

Minimum temperature

18°C (65°F)

Average temperature

27°C (80°F)

Maximum temperature

85%

Humidity

Precipitation and Sunshine hours

In September, San Juan Viejo averages 227 mm (9.0 inches) of rainfall, typically over the course of 22 rainy days. The month enjoys an average of 12 hours 13 minutes of daylight, with the sun shining for approximately 9 hours 26 minutes each day. Additionally, there is a 16% probability of sunny days during this period.

227 mm (9.0 inches)

Precipitation

22 rainy days

Rainy days

9 hours 26 minutes

Sunshine hours

16%

Chance of sun

UV Index

In September, the UV Index in San Juan Viejo reaches a maximum of 14, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 10 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	4	8	11	14	14	12	9	5	2	1
Exposure	Low			Moderate	VeryHigh	Extreme				VeryHigh	Moderate	Low
Time to burn	45 min			30 min	15 min	10 min				15 min	30 min	45 min