Cabo weather in September
September is hot and is the wettest month in Cabo San Lucas’s station reference. It remains within the eastern Pacific hurricane season. It can include bright days, but it is a month to choose with room for weather-related changes, rather than expecting rain to be only a refreshing interruption.
For the year-round comparison and official forecast sources, use our Cabo weather guide.
September temperatures and rainfall
| Climate measure | 1991–2020 normal |
|---|---|
| Average daily high | 33.7°C (92.7°F) |
| Average daily low | 23.3°C (73.9°F) |
| Mean temperature | 28.5°C (83.3°F) |
| Monthly rainfall | 114 mm (4.49 in) |
| Mean days with rain | 4 |
Reference: SMN station 3005, Cabo San Lucas, 1991–2020 normals. These are historical station averages, not a forecast, daily limits or measurements for every part of Los Cabos. Mean rainy days can be fractional because they are averaged across years.
Rain and seasonal conditions
The rainfall normal is a long-term monthly total. Actual years vary, and heavy rain can fall over a small number of days. Storm runoff and flooding can affect roads and access even when the full month is not continuously wet.
Swimming and time on the water
Follow beach, port and activity restrictions. A high air or sea temperature does not make storm-season swimming appropriate. If authorities or your operator close an activity, an indoor alternative is useful only where it is also safe to travel; do not go out to watch dangerous surf or runoff.
Planning activities in September
On suitable days, dining, a town visit or a permitted water activity may fit your stay. Keep a flexible schedule and confirm current access to nature areas. Do not assume that the estuary offers operating kayak rentals because an older article describes them.
What to pack
Bring breathable clothing, sun protection and rain protection, and keep documents and essential items readily available. Ask your accommodation about its storm procedures and how it communicates changes. Follow its directions and local authority advice if conditions deteriorate.
Dates, bookings and flexibility
Read change and cancellation terms before paying and compare the entire trip, including transport. A lower advertised rate does not establish that a policy covers every weather-related loss. Climate information cannot predict a storm’s track for your particular visit.
Compare your options
August is the neighboring hot-season comparison. Use the hurricane-season guide for dates, planning and the difference between a regional seasonal pattern and a current warning.
Compare Cabo weather in August and use the hurricane-season planning guide for the official dates and current-alert context.