The 10 most alternative cities in South America
Discover South America's top 10 alternative cities! From Valparaíso's vibrant streets to La Paz's high-altitude charm and Medellín's innovative spirit.
Isla Grande Weather in August
Isla Grande in August averages 30°C (86°F) during the day and 27°C (81°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Isla Grande in August
Climate statistics over the past 30 years suggest around 13 days of rain, with 166 mm (6.5 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Isla Grande in August
Temperatures in Isla Grande in August top out at 30°C (86°F) and drop to 27°C (81°F) overnight. Mornings and evenings are often more comfortable than the peak afternoon hours. Nights remain warm at around 27°C (81°F). For a more comfortable sleep, a cold shower before bed and a fan or air conditioning can make a big difference.
Sunshine in Isla Grande in August
The month enjoys around 198 hours of sunshine, creating mostly sunny days with good weather conditions.If your ideal day consists of dry skies and pleasant temperatures, March typically offers the best circumstances for Isla Grande.
Isla Grande Temperature in August
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Chance of Rain
44%
Precipitation
166 mm (6.5 in)
Rainy days
13 days
Humidity
82% *
Sunshine
198 hours *
Percentage Sunshine
51% *
* Data from: Cartagena, Colombia (33 KM, 20 Miles).
Isla Grande Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Isla Grande - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Isla Grande typically stay consistent throughout August, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in August
Historical weather records for Isla Grande in August
Browse day-by-day weather records for Isla Grande spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Isla Grande historical weather extremes in August
Based on weather observations in Isla Grande between 1999 and 2026, these are the recorded extremes during August.
- The warmest day in August was on August 6, 2019, with a maximum of 37°C (99°F).
- On August 17, 2005, Isla Grande saw its coldest August day with temperatures maxing out at 26°C (79°F).
- The coldest night in August in Isla Grande was on August 9, 2010, with a minimum of 16°C (61°F).
Best Places in Colombia in August
Find out more about the weather in Colombia and which places have the best travel conditions in this month. See all of Colombia in August →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Isla Grande in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Isla Grande in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping7/10 -
Outdoor sports7/10
Isla Grande 3-Day Forecast
More climate data for Isla Grande
Temperature Rainfall Sunshine Humidity
See the full Isla Grande climate overview or explore weather in Colombia.
Popular in August
Where to go in August - average daytime high across popular destinations.
Cartagena
31°C (88°F) Santa Marta29°C (84°F) San Andrés29°C (84°F) Cali
28°C (82°F) Medellín26°C (79°F) Pereira24°C (75°F) Bogotá21°C (70°F) Villa de Leyva
20°C (68°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The 10 most alternative cities in South America
5 Hidden Gems in Colombia
Explore Colombia's hidden gems, from El Cocuy's remote beauty to Providencia's serene beaches, offering authentic experiences off the beaten path.
Tayrona National Park: the most beautiful part of Colombia
Visit the park between the months December and March (not February since it is closed) or from June till August (this is high season).
Breathtaking view in Minca
Minca is a tiny village in the tropical rain forest of Colombia and is an oasis of tranquility. Everyone looking for a relatively undiscovered piece of Colombia is in the right place here.