Cabo weather in December
December offers warm afternoons and cooler nights in Cabo San Lucas, with relatively little rainfall in the historical reference. It is a winter-escape option for many visitors, but pack for the daily temperature change rather than assuming continuous beach heat.
For the year-round comparison and official forecast sources, use our Cabo weather guide.
December temperatures and rainfall
| Climate measure | 1991–2020 normal |
|---|---|
| Average daily high | 27.4°C (81.3°F) |
| Average daily low | 14°C (57.2°F) |
| Mean temperature | 20.7°C (69.3°F) |
| Monthly rainfall | 7.3 mm (0.29 in) |
| Mean days with rain | 0.7 |
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
December falls outside the official eastern Pacific hurricane-season dates, though those dates are not a guarantee against every storm or weather hazard. Winter wind, swell and occasional rain can still change plans. Check the current forecast for individual outings.
Swimming and time on the water
Ask about recent ocean conditions and thermal protection if you plan to snorkel or dive. Air temperature alone does not tell you how comfortable a longer swim will be. Use appropriate beaches, flags and local guidance rather than a general statement that every December beach is swimmable.
Planning activities in December
Whale-watching trips may begin during the authorized winter season; verify the current operating dates and do not treat a sighting as guaranteed. The Arch, local dining and town walks offer other ways to structure a visit, with boat activities dependent on sea conditions.
What to pack
Bring swimwear and light daytime clothing alongside a sweater or jacket for dinner, early departures and boat rides. Include sun protection and comfortable shoes. A surf photograph illustrates the coast but is not evidence that a particular beach suits your ability on the day.
Dates, bookings and flexibility
Holiday weeks can bring different prices and demand from early December. Compare actual flights, accommodation and activity terms. Airline routes and seasonal schedules change, so check the journey you intend to book rather than relying on an old list of direct services.
Compare your options
November is the warmer neighboring comparison. January continues the winter pattern and is one of the coolest months in the station record.
Read Cabo weather in November and Cabo weather in January for the neighboring-month comparisons.