Monthly climate guide
Cabo San Lucas weather in September
September in Cabo San Lucas is typically hot, with average daytime highs around 31°C (87°F) and night-time lows near 27°C (80°F). The month usually brings about 112 mm of rain (wet) and is a mix of sun and cloud. Daytime highs are about the same as August and about the same as October.
What stands out in September
- Humidity near 74% makes 31°C feel stickier than it sounds.
- This is rainy-season territory in Cabo San Lucas: short, heavy downpours are typical.
- There's little difference between day and night (around 4°C).
- Rain is above Cabo San Lucas's usual level, by about 310%.
It's usually the wettest month of the year.
Avg high
31°C
87°F
Avg low
27°C
80°F
Rainfall
112 mm
wet
Humidity
74%
relative
Sky
51%
cloud · a mix of sun and cloud
Cabo San Lucas weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 25°C / 77°F | 19°C / 66°F | 8 mm | 62% | 42% |
| February | 25°C / 77°F | 18°C / 65°F | 12 mm | 62% | 40% |
| March | 26°C / 79°F | 19°C / 66°F | 3 mm | 60% | 32% |
| April | 27°C / 80°F | 19°C / 67°F | 2 mm | 60% | 40% |
| May | 28°C / 82°F | 20°C / 68°F | 1 mm | 60% | 33% |
| June | 29°C / 84°F | 22°C / 72°F | 5 mm | 64% | 33% |
| July | 31°C / 88°F | 26°C / 78°F | 19 mm | 67% | 47% |
| August | 31°C / 88°F | 27°C / 80°F | 88 mm | 71% | 55% |
| September | 31°C / 87°F | 27°C / 80°F | 112 mm | 74% | 51% |
| October | 31°C / 87°F | 26°C / 78°F | 30 mm | 67% | 27% |
| November | 29°C / 83°F | 23°C / 74°F | 30 mm | 64% | 39% |
| December | 25°C / 78°F | 20°C / 68°F | 18 mm | 64% | 52% |
What to pack for September
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is September a good time to visit Cabo San Lucas?
Compare the months in the chart above to find your ideal window.
Best time to visit Cabo San Lucas →Other Mexico cities in September
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Cabo San Lucas weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/mexico/cabo-san-lucas/september
<a href="https://weathercompare.eu/weather/mexico/cabo-san-lucas/september">Cabo San Lucas weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/mexico/cabo-san-lucas" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Cabo San Lucas weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/mexico/cabo-san-lucas/september">Cabo San Lucas weather in September</a> – WeatherCompare</p>
Cabo San Lucas in September: quick answers
Is September a good time to visit Cabo San Lucas?
September is one of the wetter months in Cabo San Lucas, with about 112 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Cabo San Lucas in September?
Average highs are about 31°C (87°F) and average lows about 27°C (80°F), based on 10 years of daily data.
Does it rain a lot in Cabo San Lucas in September?
Cabo San Lucas typically gets around 112 mm of rain in September — wet. It's usually the wettest month of the year.
Figures are long-term averages for the area around Cabo San Lucas (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.