Cabo San Lucas in September
In September, Cabo San Lucas averages 31°C (88°F) during the day and 26°C (79°F) at night, with frequent rain — about 16 days of the month see precipitation (102 mm total).
Off-peakConditions are warm and beach-friendly. Expect daily rain or showers, often in heavy bursts.
It's peak hurricane season in Cabo San Lucas during September. Travel is possible but expect storm risk, possible flight disruption, and generally lower travel insurance coverage.
How September compares to the rest of the year in Cabo San Lucas
September is one of the warmest months in Cabo San Lucas (3rd of 12) and one of the wettest months (2nd of 12). Daytime temperature runs 2°C above the annual average (29°C). September runs 1°C cooler than August (32°C) and stays flat into October.
September sunrise & sunset in Cabo San Lucas
Times shown for Cabo San Lucas local time (America/Mazatlan), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Cabo San Lucas — September
Golden-hour and blue-hour windows for the 15th of September, in Cabo San Lucas's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Cabo San Lucas in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Off-peak) and Cabo San Lucas's popularity.
Crowds & pricing — September in Cabo San Lucas
This is off-peak for Cabo San Lucas — the lowest prices of the year and the fewest crowds, but with real trade-offs: some restaurants, hotels, and beach businesses may close for the season; weather conditions can make outdoor activities unpredictable; and a handful of seasonal sights run reduced hours or close entirely. Great if you prefer a quiet local rhythm and don't mind the climate giving you reasons to choose indoor activities.
Why this tier: peak hazard season (1 active)
Sun & mosquito risk — September in Cabo San Lucas
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Cabo San Lucas — September
Across the year Cabo San Lucas's sea swings from 21°C (February) to 29.9°C (August) — September sits at 29.4°C.
Cabo San Lucas in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 26°C / 78°F | 17°C / 63°F | 6 mm | 2 | — |
| February | 26°C / 79°F | 17°C / 63°F | 7 mm | 2 | — |
| March | 27°C / 81°F | 19°C / 65°F | 1 mm | 1 | — |
| April | 29°C / 83°F | 20°C / 68°F | 0 mm | 0 | — |
| May | 30°C / 85°F | 21°C / 70°F | 1 mm | 1 | — |
| June | 31°C / 87°F | 24°C / 75°F | 20 mm | 3 | — |
| July | 32°C / 90°F | 27°C / 80°F | 22 mm | 8 | — |
| August | 32°C / 90°F | 27°C / 80°F | 103 mm | 16 | — |
| September | 31°C / 88°F | 26°C / 79°F | 102 mm | 16 | — |
| October | 31°C / 88°F | 24°C / 76°F | 33 mm | 6 | — |
| November | 29°C / 84°F | 22°C / 71°F | 15 mm | 3 | — |
| December | 26°C / 79°F | 18°C / 65°F | 3 mm | 3 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Cabo San Lucas in September →
Frequently asked questions
How hot is Cabo San Lucas in September?
In September, Cabo San Lucas averages a high of 31°C (88°F) and a low of 26°C (79°F) — generally hot.
Does it rain a lot in Cabo San Lucas in September?
September is quite rainy in Cabo San Lucas, with about 16 rainy days on average.
Is September a good time to visit Cabo San Lucas?
September is hot but on the rainy side. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Cabo San Lucas in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen, plus a compact umbrella or rain jacket. See the full September packing list for Cabo San Lucas for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.