Weather in Cartagena in October

Prime time. October is about as good as Cartagena gets. Highs average 24.8 °C, lows 18.5 °C, and rain falls on 6 days — nothing in the month is working against you.

Cartagena barely has seasons. October scores 89 out of 100 against a best of 95 in May — a gap small enough that the month you choose matters far less here than the week you choose.

Rain falls on only 6 days, so an itinerary with no wet-weather fallback is a reasonable risk. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average October reaches 30 °C. Across the twenty years measured, the hottest October day reached 31.4 °C and the coldest night fell to 9.7 °C, and the wettest single day dropped 33 mm — roughly 114% of the month's rain in one day.

October is moderately variable: 5 mm in the driest year against 83 mm in the wettest, around an average of 29 mm. Roughly two Octobers in three land near that average, and the third does something else entirely.

Wind is light at 10.8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 71%.

How October sits in the year

The month is on the way down: 3.2 °C cooler than September, with November dropping another 4.9 °C. The first week and the last are not the same trip.

Daylight in October

11.3 hours of daylight, losing 1.2 hours across the month. That is between Cartagena's extremes of 14.7 and 9.6 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 22.1 °C in October — comfortable for a proper swim. The sea peaks at 25.7 °C in August and bottoms out at 14.7 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself. October is the value pick for Cartagena: it scores within 6 points of May without carrying May's prices.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

October in Cartagena versus nearby

If Cartagena is one option among several, the nearby comparison is worth making. Murcia is close enough to be a coin toss — 2.2 °C warmer, 1 day less rain. Valencia is close enough to be a coin toss — within a degree on temperature, 1 day more rain.

So: October is effectively as good as it gets here — 6 points behind May, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Cartagena

See all twelve months in Cartagena, or where else to go in October.