San José del Cabo Weather in September
September in San José del Cabo averages 31°C (88°F) during the day and 26°C (79°F) at night. It is the wettest month of the year, with 146 mm (5.7 in) of rainfall on average, so waterproof gear is a must.
Rainfall in San José del Cabo in September
It's the month with the heaviest rainfall, so an umbrella is a must to navigate the wet weather. Rain is expected on roughly 6 days, totalling around 146 mm (5.7 in) for the month. Rainfall tends to arrive in short, intense showers this month. Rain days are few, but the showers can be surprisingly heavy.
Temperature in San José del Cabo in September
September in San José del Cabo sees highs of 31°C (88°F) and lows of 26°C (79°F) overnight. Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. Nights are warm at 26°C (79°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in San José del Cabo in September
Enjoy a sunny month with about 210 hours of sunshine, the clear skies make San José del Cabo even more beautiful.
Average water temperature in September
The water is 29°C (84°F) — very warm by most standards. Comfortable to swim in, but not particularly refreshing if you're looking to cool off.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit San José del Cabo. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mexico, check out our San José del Cabo's climate page.
San José del Cabo Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
31°C (88°F)
Water Temperature
29°C (84°F)
Chance of Rain
20%
Precipitation
146 mm (5.7 in)
Rainy days
6 days
Sunshine
210 hours
Percentage Sunshine
Historical weather for San José del Cabo in September
Browse day-by-day weather records for San José del Cabo spanning 36 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San José del Cabo historical weather extremes in September
Based on 19 years of weather observations (2006-2025), these are the most extreme conditions recorded in San José del Cabo.
- The hottest September day on record in San José del Cabo reached 38°C (100°F) (September 26, 2024).
- The lowest daytime temperature in September was 26°C (79°F), recorded on September 4, 2007.
- The coldest night in September in San José del Cabo was on September 20, 2024, with a minimum of 20°C (68°F).
Best Places in Mexico in September
Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in September →
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What to Wear in San José del Cabo in September
Warm but pleasant conditions in San José del Cabo in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 29°C (84°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in San José del Cabo in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mexico, check out our San José del Cabo's climate page.
Temperature Rainfall Sunshine Water Temp
See the full San José del Cabo climate overview or explore weather in Mexico.
