Weather in Cartagena in July

Prime time. July is about as good as Cartagena gets. Highs average 30.4 °C, lows 23.1 °C, and rain falls on 0 days — nothing in the month is working against you.

Cartagena barely has seasons. July scores 85 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 is not a factor worth planning around this month. Pack for 30.4 °C days and 23.1 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 18 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest July day reached 36.4 °C and the coldest night fell to 19.5 °C.

July is dependably dry, and that reliability is the point: across the twenty years measured, the wettest July on record still only managed 15 mm, and the driest managed 0 mm. There is no meaningful variability to plan around, which makes this one of the few months anywhere that you can build a fixed outdoor itinerary against without a fallback. The wettest single day in twenty years of Julys brought 8 mm. Rain simply is not the variable that decides this trip — heat, crowds and cost are.

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 64%.

How July sits in the year

Temperatures hold steady either side: 27.8 °C in June, 30.4 here, 30.8 in August. Nothing about the timing within the month matters much.

Daylight in July

July is at or near the longest days of Cartagena's year: 14.5 hours of daylight, losing 0.6 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

Sea temperature

The sea sits at about 24.3 °C in July — warm enough to stay in as long as you like. This is the warmest the water gets all year.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself.

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

July in Cartagena versus nearby

If Cartagena is one option among several, the nearby comparison is worth making. Murcia is the weaker option in July — 5.9 °C warmer, 1 day more rain. Valencia is the weaker option in July — 5.2 °C warmer, 2 days more rain.

So: July works, with May the better month by 10 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Cartagena

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