September weather forecast
Cabo San Lucas, Mexico

September is the second consecutive month with considerable rainfall in Cabo San Lucas. Peaks in daytime temperature, sea temperature, and humidity coincide with a significant rise in rainfall from August, registering 81mm (3.19"). Despite being the wettest month of the year, September retains Cabo San Lucas' warm and tropical allure. The prevailing climate exhibits a continuation of the wet season that began in July. Consequently, an eclectic mix of sunshine, rain, and warmth characterizes this month.

Temperature

September's onset sees an average high-temperature of a still warm 29°C (84.2°F), exhibiting a slight fluctuation from the previous month. Throughout September, a minimal difference from peak daytime temperatures is noted, marking a steady low-temperature average of 25.7°C (78.3°F).

Heat index

September's mean heat index is appraised at a tropical 34°C (93.2°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.

Humidity

The most humid month in Cabo San Lucas, Mexico, is September, with an average relative humidity of 78%.

Rainfall

The month with the most rainfall in Cabo San Lucas, Mexico, is September, when the rain falls for 10.7 days and typically aggregates up to 81mm (3.19") of precipitation.

Sea temperature

September is the month with the warmest seawater in Cabo San Lucas, with an average sea temperature of 29.5°C (85.1°F).
Note: For swimming, diving, or other water activities, the temperature range of 25°C (77°F) to 29°C (84.2°F) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.

Daylight

In September, the average length of the day is 12h and 16min.
On the first day of September in Cabo San Lucas, sunrise is at 6:02 am and sunset at 6:36 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 6:07 pm MST.

Sunshine

In Cabo San Lucas, the average sunshine in September is 9.3h.

UV index

The months with the highest UV index in Cabo San Lucas are June through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 7 during September translates into the following guidance:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Caution! The Sun's UV rays become stronger due to reflections from water and sand.