TL;DR
- Climate pattern: Hot desert. Hot season ~mid-June to late October (typical highs around 32–33 °C / 90–91 °F). Cooler season ~early December to late March (highs around 26 °C / 79 °F).
- Rainy window: August–October is the wet stretch; September is consistently the wettest month. Showers tend to be short but heavy.
- Hurricanes: Eastern Pacific season May 15–Nov 30, with peak activity July–September. Direct hits on Cabo are uncommon but late-summer systems can disrupt plans.
- Best overall months: May–June (before humidity/rain ramp up) and October–November (heat/humidity ease, seas still warm). This is based on the climate profile and observed monthly stats below.
How Cabo’s climate actually works
Cabo is located at the very tip of Baja California Sur, where desert air meets the Pacific and the Sea of Cortez. Last stats show a reliable cycle: a hot, humid season from about mid-June to late October, and a milder, drier season from early December through March. Within that hot stretch, the ocean warms, humidity climbs, and short tropical downpours become possible—especially August and September.
The consensus is hottest in Aug–Sep, wettest in September, hurricane season May–Nov with a July–September peak. Those points appear across climate references and travel weather summaries; below, we go deeper with month-by-month figures and practical “what it feels like” notes.
Cabo weather by month
Here are typical monthly conditions of Cabo. Temperature values are representative monthly averages, rainfall uses commonly cited monthly totals. (Different stations/time periods vary a little, but the shape of the year is very consistent.)
| Month | Typical Daytime High | Typical Night Low | Rain (mm / in) | Notes |
|---|---|---|---|---|
| Jan | ~25–26 °C (77–79 °F) | ~12–14 °C (54–57 °F) | ~19 mm / 0.7″ | Coolest air; very dry; crisp evenings. |
| Feb | ~25–28 °C (77–82 °F) | ~12–14 °C (54–57 °F) | ~4 mm / 0.2″ | Still dry, pleasant. |
| Mar | ~26–30 °C (79–86 °F) | ~13–15 °C (55–59 °F) | ~3 mm / 0.1″ | Sunny, low humidity |
| Apr | ~29–33 °C (84–91 °F) | ~15–17 °C (59–63 °F) | ~2 mm / 0.1″ | Blue-sky streaks; seas begin to warm. |
| May | ~30–35 °C (86–95 °F) | ~16–18 °C (61–64 °F) | ~1 mm / 0.0–0.1″ | Shoulder-season sweet spot; dry. |
| Jun | ~31–38 °C (88–100 °F) | ~19–21 °C (66–70 °F) | ~2 mm / 0.1″ | Heat builds; humidity starting. |
| Jul | ~33–38 °C (91–100 °F) | ~22–25 °C (72–77 °F) | ~36 mm / 1.4″ | Hot and muggy afternoons; ocean warm. |
| Aug | ~33–38 °C (91–100 °F) | ~23–26 °C (73–79 °F) | ~65 mm / 2.6″ | Peak heat + humidity; quick downpours. |
| Sep | ~32–36 °C (90–97 °F) | ~23–25 °C (73–77 °F) | ~100–114 mm / 4.0–4.5″ | Wettest month; warmest sea. |
| Oct | ~31–35 °C (88–95 °F) | ~20–22 °C (68–72 °F) | ~39 mm / 1.5″ | Rain/humidity easing; great evenings. |
| Nov | ~29–31 °C (84–88 °F) | ~17–19 °C (63–66 °F) | ~8 mm / 0.3″ | Mostly dry; very pleasant. |
| Dec | ~26–27 °C (79–81 °F) | ~14–16 °C (57–61 °F) | ~17 mm / 0.7″ | Cool, dry, calm. |
Here is breakdown of each season:
Rainy season: what it feels like
When: Practically late July through early October, with a peaked risk in September.
How the rain behaves: Think short, intense bursts (tropical downpours or bands from a nearby system), then clearing and sun. All-day washouts are not the norm but do happen when a tropical disturbance passes close.
On the ground: Streets can puddle quickly; surf gets rough and beach flags may flip to red/black for a day or two; some boat tours reschedule. If you’re planning snorkeling or a yacht day in Aug–Sep, put those activities early in a flexible schedule. For a truly luxurious stay during this time, consider booking a Luxury Private Villa in Cabo with the flexibility to reschedule outdoor plans as needed.
Hurricane season in Cabo
- Official dates: Eastern Pacific hurricane season runs May 15–Nov 30; the peak months are July–September. These dates and the peak window come from NOAA’s seasonal outlooks.
- How often does Cabo get hit? Direct landfalls are uncommon—many storms form off mainland Mexico and move west-northwest into open water. Still, near-misses and occasional landfalls do occur; for example, Hurricane Norma (Oct 21, 2023) made landfall just WNW of Cabo San Lucas, bringing strong winds and heavy rain.
- What disruption looks like: A day or two of gusty winds, large surf, and intermittent heavy rain; beach closures (red/black flags); and occasional power/internet hiccups until crews reset infrastructure.
- How to travel smart in Aug–Sep:
- Monitor forecasts 3–5 days before you fly via the NHC 7-Day Outlook and your airline app. The Outlook updates four times daily in season.
- Ask your villa in Cabo (In which you have been staying) about backup power, potable water, and their storm plan.
- Consider travel insurance that covers trip interruption due to weather.
- Avoid flood water when driving; coastal and arroyo roads can pond quickly during downpours.
Sea temperatures
- Warm-water window: Roughly late July through early November, with the warmest water in September (~29 °C / 84 °F). Cooler water (around 21–22 °C / 70–72 °F) is typical in late winter/early spring. (San José del Cabo readings mirror Cabo San Lucas.)
Best time to visit
There isn’t one “best” month—only best for what you want. Use this quick chooser:
- Sun + pool weather, low rain risk, fewer crowds: May–June. Long, dry beach days without peak humidity, sitting right before the rainy stretch.
- Warm seas + comfortable evenings, rain risk fading: October–November. After the September peak, humidity and rain ease while the ocean stays toasty.
- Cooler air + whale season: Mid-December through March (learn more about march weather in Cabo).
- Budget-seeker who loves heat: July–September can bring softer pricing—with the trade-off of heat, humidity, and weather volatility. Keep boat/water plans flexible.
Month-by-month: what it’s like on the ground
December–March (Cool & dry): Highs hover around the mid-70s to high-70s °F; evenings can feel crisp on open terraces. Skies are bright, humidity low. If you’re sensitive to cold water, expect cooler swims (low 70s °F).
April–June (Sunny build-up): Still very dry; sunshine dominates. May–June are the “easy picks” for a villa week: pool-perfect days, stable conditions, and low rain odds.
July–August (Heat + humidity arrive): It feels hot and muggy by afternoon; pop-up showers can hit late day. The ocean is warm and inviting for snorkeling or long swims—book ocean outings early morning for smoother seas.
September (Peak wet month): Highest rain odds and warmest sea; be flexible with outdoor plans. A passing tropical system can elevate surf and trigger advisories.
October–November (Settle-back months): Rain risk drops quickly, evenings turn breezy/comfortable, and water temps remain warm—an ideal compromise if you want fewer crowds than winter, but less humidity than summer.
Practical planning & packing tips (weather-proofed)
- If you’re heat-sensitive: Prefer Dec–Mar or May–June. Book a villa with strong shade, ceiling fans, and cross-ventilation for afternoons. (Heat and humidity rise markedly Jul–Sep.)
- If you’re traveling to Cabo San Lucas in Aug–Sep: Put boat days early in your stay; keep a Plan B for squally afternoons. Monitor the NHC Outlook for any disturbances.
- If you’re a swimmer/snorkeler: For the warmest water, aim Aug–Nov; for clearest air and less humidity topside, Dec–Mar.
- If you want shoulder-season value without storm anxiety: May–June or Oct–Nov.
- For data-driven planners: Bookmark a climatology reference (Timeanddate for monthly totals and the WeatherSpark season charts) before booking.
Why these numbers sometimes disagree
You’ll see September rainfall quoted anywhere from ~60 mm (~2.4″) to ~114 mm (~4.5″). That’s due to different stations, time periods, and calculation methods (e.g., WeatherSpark’s “sliding 31-day” accumulation vs. tables of monthly totals from other datasets). The rank order is consistent: September is the wettest, Aug/Oct trail behind, and May/June are near-bone-dry. Use the shape of the season to plan, not a single number.
Hurricane: a real-world example
To understand “rare but impactful,” look at Hurricane Norma (2023): the National Hurricane Center’s reports document landfall just west-northwest of Cabo San Lucas with ~70 kt (80 mph) winds, followed by rapid weakening inland. That’s not an every-year event, but it’s why late-summer travelers should watch forecasts and keep plans flexible.
Sources:
- Timeanddate — Cabo San Lucas climate averages (monthly tables; wettest month Sept at ~4.50″).
- WeatherSpark — Year-round Cabo climate (hot/cool season dates; sliding rainfall; monthly profiles; water-temperature seasonality for San José del Cabo).
- NOAA / CPC — Official Eastern Pacific hurricane season May 15–Nov 30; peak Jul–Sep.
- NHC — Operational & post-storm documentation (e.g., Hurricane Norma landfall WNW of Cabo San Lucas; outlook update cadence).
Final pick-your-month cheatsheet
- Easiest weather: May–June, Oct–Nov
- Warmest sea: Aug–Nov
- Cool & dry: Dec–Mar
- Most rain / storm risk: September (and nearby weeks)
FAQ
Does Cabo get hurricanes?
Yes. Cabo is in the Eastern Pacific basin. Hurricane season runs May 15–Nov 30, with most activity July–September. Direct landfalls are uncommon, but late-summer systems can bring heavy rain, wind, and rough seas.
When is the rainy season in Cabo?
Practically late July to early October. September is the wettest month. Expect short, intense downpours rather than all-day rain.
What is the hottest time of year?
The hot season is roughly mid-June to late October, with typical daytime highs around 32–33 °C (90–91 °F) and higher humidity in August–September.
What’s the best time to visit for “reliable weather”?
May–June and October–November: warm, sunny, and generally low rain risk. Winter (Dec–Mar) is cooler and very dry.
How likely is a hurricane to ruin my trip?
Large, trip-ending storms are infrequent. Most visitors see normal sunshine with occasional squalls. If you’re travelling in Aug–Sep, keep plans flexible and monitor forecasts a few days before you fly.
Does it rain all day in September?
Usually no. Rain often arrives in brief, heavy bursts (or outer rain bands) and clears. A nearby tropical system can still cause a day or two of disruptions.
Are beaches swimmable during hurricane season?
Sometimes red/black flags are posted after storms due to strong surf or currents. Use lifeguarded, typically calmer spots (e.g., Medano, Chileno, Santa Maria) and always follow flags.
How warm is the ocean, and when?
Warmest Aug–Nov (often 27–29 °C / 81–84 °F). Coolest late winter/early spring (around 21–22 °C / 70–72 °F).
Is August a bad month?
Not necessarily—it’s hot, humid, and rain risk rises, but the water is warm and prices can be softer. Plan morning ocean activities and have indoor backups.
What should I pack for late summer (Aug–Sep)?
Light rain shell, quick-dry clothing, hat, reef-safe sunscreen, electrolytes, dry bag for electronics, and a power bank. For villas: ask about backup power and filtered water.
Are evenings cool in winter?
Yes—Dec–Mar evenings can feel crisp on terraces. Bring a light layer.
What about wind?
Afternoons can be breezy year-round. On rooftop terraces, use low-flame or flameless lighting and have throws/blankets handy in winter.
Which month has the lowest rain risk?
Typically May–June (and much of winter). Cabo is arid overall.
If a storm is forecast, what should I do?
Watch official advisories, avoid flooded roads, secure outdoor items, and follow beach-flag guidance. Many properties have storm procedures—ask your host.
Is humidity a big factor?
Mostly in Aug–Sep. Use AC smartly (doors closed), drink water, and plan high-effort activities early morning or near sunset.
Will boat/yacht days get cancelled in summer?
They can be rescheduled if seas are rough or lightning is nearby. Book ocean days early in the trip so you have buffer days.
Are mosquitoes bad?
They can appear after rain. Use repellent at dusk, keep screens shut, and avoid standing water around outdoor areas.
Do El Niño/La Niña change Cabo’s rain?
They can nudge odds (El Niño sometimes implies a bit more late-summer moisture), but local impacts vary. Always check the week-of forecast.
