Cartagena in November: What the Caribbean Dry Season Entry Means for Heat, Humidity, and Rain

Cartagena Colombia Weather in November: The Dry Season Starts, But Not All at Once

November in Cartagena, Colombia marks the official arrival of the dry season — but anyone expecting an immediate switch from wet to dry will find the first two weeks more complicated than that. Average daytime highs sit around 88–90°F (31–32°C) throughout the month, humidity begins dropping from October's suffocating 85–88% toward a more manageable 75–78% by late November, and rain days fall from roughly 18 days in October to around 10–12 days across November as a whole. The catch: those rain days are front-loaded. Early November still carries the tail of the rainy season, while the final ten days tend to be noticeably cleaner and drier. Timing within the month matters more than the month itself.

Early November vs. Late November: Two Different Trips

The first two weeks of November can still produce heavy afternoon downpours — the kind that dump 1–2 inches (25–50mm) of rain in under an hour and turn some of the narrower streets inside the walled city into shallow rivers. Total monthly rainfall averages around 3.5 inches (89mm), but the distribution is uneven. The first half of the month accounts for the majority of that.

By contrast, arriving on November 20th or later feels meaningfully different. Skies clear faster after any morning clouds, afternoon storm activity drops off sharply, and the humidity starts to feel like it's actually receding rather than just threatening to. Sunset times hover around 5:45–5:50 PM local time throughout the month, and evenings in the walled city during late November — warm at around 79–81°F (26–27°C), lower humidity, light breeze off the bay — represent some of the most genuinely comfortable outdoor conditions Cartagena offers.

What This Means for Walled City Touring

Walking the walls (Las Murallas) and the cobblestoned streets of El Centro and Getsemaní is the primary outdoor activity in Cartagena, and heat management is a real consideration regardless of time of year. In early November, the UV index regularly hits 11–12 (extreme) between 10 AM and 3 PM, meaning unprotected skin can burn in under 20 minutes. The heat isn't just uncomfortable — it's legitimately draining during midday hours.

The practical approach: do serious walking before 9:30 AM or after 4:00 PM. Midday is for covered courtyards, museum interiors, or a long lunch somewhere with a ceiling fan. This calculus applies throughout the month, though late November offers slightly more flexibility as humidity eases and occasional clouds provide brief breaks.

Rain during early November is generally short and violent rather than persistent. A common pattern is a clear morning, building clouds through midday, and a downpour between 2–5 PM before clearing again by evening. Planning outdoor itineraries around this rhythm — mornings for walking, late afternoon as a buffer, evenings for plazas and the waterfront — works reasonably well.

Rosario Islands Day Trips: November Conditions on the Water

The Islas del Rosario sit roughly 22 miles (35km) southwest of Cartagena and are a standard day-trip from the city. The boat crossing takes 75–90 minutes and crosses open Caribbean water, which can get choppy — particularly in early November when wind patterns are still transitioning. Wave heights of 3–5 feet (1–1.5 meters) are not unusual in the first half of the month, and passengers prone to motion sickness should plan accordingly or take medication before boarding.

By late November, the trade winds begin establishing themselves more consistently, which paradoxically makes the crossing slightly rougher on some days but also blows in cleaner skies over the islands themselves. Visibility for snorkeling improves noticeably as suspended sediment from heavy rains decreases — underwater visibility can jump from 15–20 feet (4.5–6 meters) in early November to 25–35 feet (7.5–10.5 meters) by month's end. For anyone going specifically for the marine environment, later in November is the better call.

Water temperature sits around 82–84°F (28–29°C) throughout the month, so thermal comfort in the water is a non-issue. Sun protection is the real concern — reef-safe sunscreen, a rash guard, and a hat for the boat ride aren't optional.

What November Is Not: Managing Expectations

November is not Cartagena's peak season. That arrives in December and runs through March, when humidity drops further into the 65–70% range, rain days become rare, and prices for flights and accommodation rise accordingly. November is a legitimate shoulder month — good value, reasonable weather, and noticeably fewer crowds than December. It is not, however, a reliably dry month, and early November especially should not be treated as one.

The walled city's rooftop bars and open-air restaurants can fill up fast on clear evenings since capacity is lower in November than during high season. Reservations are worth making for dinner if there's a specific place on the list.

Temperature, Humidity, and What to Actually Pack

Temperatures vary less than most travelers expect. The range across November is narrow: daytime highs of 88–91°F (31–33°C), overnight lows of 77–79°F (25–26°C). The difference between a "hot day" and a "comfortable day" in Cartagena in November is almost entirely determined by humidity and cloud cover, not the thermometer reading.

• Clothing: Lightweight, breathable fabrics only. Linen and moisture-wicking synthetics work. Cotton holds sweat. Anything requiring a layer is unnecessary.
• Rain: A packable rain shell or a compact umbrella handles the afternoon downpours in early November. A full rain jacket is overkill.
• Sun protection: High-SPF sunscreen, UV-blocking sunglasses, and a hat with a brim. The UV index is unforgiving at this latitude year-round.
• Footwear: Shoes that can get wet and dry quickly. Cobblestones get slick after rain, and some streets hold water briefly after heavy showers.
• Hydration: Dehydration sneaks up faster in high humidity because sweat doesn't evaporate efficiently. More water than seems necessary is the right amount.

For tracking how conditions shift day by day during a trip — particularly useful when deciding whether to book a Rosario Islands day trip or push it a day — the WeatherGO app gives hourly breakdowns with humidity and UV index, not just a generic rain icon.

The Bottom Line on November in Cartagena

Arrive in the first week of November and the rainy season is still technically in the room. Arrive in the final ten days and the dry season has mostly shown up. The sweet spot for balancing lower prices against genuinely good weather is roughly November 18–30. The heat is relentless regardless of when the visit falls — Cartagena doesn't do cool — but late November offers the best version of manageable: lower humidity, fewer rain interruptions, cleaner water around the islands, and pleasant evenings in the city. It's not the perfect month. It's a good one, used correctly.