September weather forecast
San José del Cabo, Mexico

September

Weather in September

The first month of the autumn, September, is still a warm month in San José del Cabo, Mexico, with an average temperature ranging between max 29.6°C (85.3°F) and min 25.6°C (78.1°F).

Temperature

Entering September, San José del Cabo's average high-temperature reads a warm 29.6°C (85.3°F), indicating a close resemblance to the previous month's climate. During the September nights, San José del Cabo's temperature maintains an average close to the daytime highs, settling at 25.6°C (78.1°F).

Heat index

During September, the heat index is calculated to be a torrid 35°C (95°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The most humid month is September, with an average relative humidity of 76%.

Rainfall

The month with the most rainfall is September, when the rain falls for 13.2 days and typically aggregates up to 83mm (3.27") of precipitation.

Sea temperature

August through October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, ensuring all water activities are pleasurable for extended periods without feeling uneasy.

Daylight

In September, the average length of the day is 12h and 16min.
On the first day of the month, sunrise is at 6:01 am and sunset at 6:35 pm. On the last day of September, sunrise is at 6:10 am and sunset at 6:06 pm MST.

Sunshine

In San José del Cabo, the average sunshine in September is 9.4h.

UV index

The months with the highest UV index are May through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 7 during September translates into the following directions:
Shield from overexposure. Defense against sun-related harm is required. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.

Frequently asked questions

Is it hot during September?
In San José del Cabo, 29.6°C (85.3°F) is the average high-temperature and 25.6°C (78.1°F) is the average low-temperature during September. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is calculated to be 35°C (95°F).
What is the most humid month?
The most humid month in San José del Cabo is September, with an average relative humidity of 76%.
What is the average humidity in September?
The average relative humidity in September is 76%.
What is the wettest month?
September is the month with the most rainfall. Rain falls for 13.2 days and accumulates 83mm (3.27") of precipitation.
How many days does it rain in September?
In San José del Cabo, during September, the rain falls for 13.2 days and regularly aggregates up to 83mm (3.27") of precipitation.
When is the sea warmest?
August through October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
What is the sea water temperature in September?
In San José del Cabo, the average seawater temperature in September is 29°C (84.2°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.
What is the average length of the day in September in San José del Cabo?
The average day length in September is 12h and 16min.
When is the sunrise / sunset in September?
On the first day of September, sunrise is at 6:01 am and sunset at 6:35 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 6:06 pm MST.
How many hours of sunshine does San José del Cabo have in September?
In San José del Cabo, the average sunshine duration in September is 9.4h.
When is the highest UV index?
May through October, with an average maximum UV index of 7, are months with the highest UV index.
How high is the UV index in September?
The average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - San José del Cabo, Mexico
Average temperature in September
San José del Cabo, Mexico
  • Average high temperature in September: 29.6°C

The warmest month (with the highest average high temperature) is August (30.4°C).
The month with the lowest average high temperature is February (23.3°C).

  • Average low temperature in September: 25.6°C

The month with the highest average low temperature is August (26.5°C).
The coldest month (with the lowest average low temperature) is January (17.9°C).

Average pressure in September - San José del Cabo, Mexico
Average pressure in September
San José del Cabo, Mexico
  • Average pressure in September: 1009.5mbar

The month with the highest atmospheric pressure is January (1015.6mbar).
The month with the lowest atmospheric pressure is September (1009.5mbar).

Average wind speed in September - San José del Cabo, Mexico
Average wind speed in September
San José del Cabo, Mexico
  • Average wind speed in September: 9.5km/h

The windiest month (with the highest average wind speed) is January (10.7km/h).
The calmest month (with the lowest average wind speed) is October (8.4km/h).

Average humidity in September - San José del Cabo, Mexico
Average humidity in September
San José del Cabo, Mexico
  • Average humidity in September: 76%

The month with the highest relative humidity is September (76%).
The month with the lowest relative humidity is May (57%).

Average rainfall in September - San José del Cabo, Mexico
Average rainfall in September
San José del Cabo, Mexico
  • Average rainfall in September: 83mm

The wettest month (with the highest rainfall) is September (83mm).
The driest months (with the least rainfall) are March and April (0mm).

Average rainfall days in September - San José del Cabo, Mexico
Average rainfall days in September
San José del Cabo, Mexico
  • Average rainfall days in September: 13.2 days

The month with the highest number of rainy days is August (15 days).
The month with the least rainy days is April (0.6 days).

Average sea temperature in September - San José del Cabo, Mexico
Average sea temperature in September
San José del Cabo, Mexico
  • Average sea temperature in September: 29°C

The best months for swimming (with the highest average sea temperature) are August, September and October (29°C).
The coldest months (with the lowest average sea temperature) are February and March (21°C).

Average daylight in September / Average sunshine in September - San José del Cabo, Mexico
Average daylight in September /
Average sunshine in September
San José del Cabo, Mexico
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 42min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).

Average sunshine days in September - San José del Cabo, Mexico
Average sunshine days in September
San José del Cabo, Mexico
  • Average sunshine days in September: 13.9 days

The month with the most sunshine days is March (30.2 days).
The month with the least sunshine days is August (13.3 days).

Average UV index in September - San José del Cabo, Mexico
Average UV index in September
San José del Cabo, Mexico
  • Average UV index in September: 7

The months with the highest UV index are May, June, July, August, September and October (UV index 7).
The month with the lowest UV index is December (UV index 5).

Average cloud cover in September - San José del Cabo, Mexico
Average cloud cover in September
San José del Cabo, Mexico
  • Average cloud cover in September: 21

The month with the most cloud cover is September (Cloud cover 21).
The month with the least cloud cover is May (Cloud cover 7).

Average visibility in September - San José del Cabo, Mexico
Average visibility in September
San José del Cabo, Mexico
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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