Cabo San Lucas weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: October – July
What is the weather like in Cabo San Lucas in September?
In September, Cabo San Lucas is hot: daytime highs average 32 °C, and even at night it stays warm at around 26 °C. The sea averages 28.8 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It is the rainy season: rain falls on about 15 days, totalling 162 mm. On about 24 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a good month for a holiday in Cabo San Lucas.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 73 | 77 | 95 |
| Day | 33° | 32° | 32° |
| Night | 27° | 26° | 24° |
| Sea | 29° | 29° | 29° |
| Sun | 9 h | 8 h | 9 h |
| Rain days | 15 | 15 | 4 |
More details for September
- Daylight
- 12 h 19 min06:06 – 18:24
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or more
- Wind
- 11 km/haverage daily peak
- Cloud cover
- 55 %on average
- Hot days
- 24 days30 °C or more
- Time zone
- UTC−7America/Mazatlan
How the score comes together
- Temperatureweight 35 %90 %
- Seaweight 25 %100 %
- Sunshineweight 20 %77 %
- Few rainy daysweight 20 %24 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Cabo San Lucas in September: quick answers
Is Cabo San Lucas hot in September?
Yes. In September, Cabo San Lucas is hot: daytime highs average 32 °C and nights stay around 26 °C. On about 24 days the thermometer climbs to 30 °C or more.
Can you swim in Cabo San Lucas in September?
Yes. In September the sea averages 28.8 °C – lovely and warm for swimming.
Does it rain much in Cabo San Lucas in September?
It rains often – on about 15 days, adding up to 162 mm.
Cabo San Lucas month by month
The whole year in Cabo San LucasAll destinations: MexicoWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)