Colombia
Cartagena in August: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Cartagena in August is climatically mixed. The average daily high is around 30 °C, and the sea is about 30 °C. With about 24 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
52/100 · #10
Warmth
#7
Dryness
#10
Sun
#5
Sea warmth
#4
Published best categories: none
Cartagena · AugustPhoto: Bernard Gagnon · CC BY-SA 4.0Climate facts
- Average high
- 30 °C
- Average low
- 27 °C
- Sea
- 30 °C
- Rainy days (est.)
- 24 rainy days (est.)
- Sun (est.)
- 7 h/day
- Humidity
- 82 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| July | 30 | 27 | 21 | 163 | 6.8 | 81 | 3.8 | 30 | 52 |
| August (selected) | 30 | 27 | 24 | 168 | 6.8 | 82 | 3.5 | 30 | 52 |
| September | 29 | 27 | 26 | 179 | 6.4 | 82 | 3.0 | 30 | 53 |
How do the previous and next months compare?
Baseline: August (52/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| July | ±0 | +0.2 °C | ±0 °C | -2.9 | -5 mm | ±0 h | -0.4 % | +0.4 m/s | ±0 °C |
| September | +1 | -0.5 °C | ±0 °C | +2.1 | +11.1 mm | -0.4 h | +0.4 % | -0.4 m/s | ±0 °C |
All twelve months in context

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Where to stay in Cartagena
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Useful next decisions
Frequently asked questions
How warm is Cartagena in August?
The average daily high is around 30 °C, with an average daily low of about 27 °C.
Can you swim in Cartagena in August?
The sea is about 30 °C (very warm).
Does it rain a lot in Cartagena in August?
The curated estimate is about 24 rainy days per month, not a directly measured long-term average. Total precipitation averages around 168 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Cartagena?
By the climate score, January, February, March and December are the strongest months for Cartagena. For a beach trip: January, February, March and December. August is not among them.