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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.
During May, Lasso experiences moderate daytime temperatures of 15°C (59°F) and cooler nights around 6°C (43°F). May sits within the rainy season, so expect regular and often heavy rainfall.
Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Pick a month to see the average temperature, rainfall and sunshine in Lasso - and find the best time to visit.
49-year average (1976-2025)
Based on our historical records, temperatures in Lasso typically stay consistent throughout May, with daily highs averaging around 15°C (59°F). Nights are cool, with lows around 10°C (50°F).
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Lasso spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
The extremes listed below come from historical weather data collected in Lasso from 2004 through 2026.
Find out more about the weather in Ecuador and which places have the best travel conditions in this month. See all of Ecuador in May →
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).
Pack for changing conditions in Lasso in May. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Sunglasses could come in handy during the sunnier parts of your trip.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Lasso climate overview or explore weather in Ecuador.
Where to go in May - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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.
The Galapagos Islands
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A rain forest hotel in the clouds
This is not "just a lodge". It is a sanctuary of peace and nature for those who like to stay in the heart of nature with minimal environmental impact.
Visit the Rainbow Mountains
The Rainbow Mountain (Vinicunca) is acolored rainbow mountain that will steal your heart forever and the view from the top will take your breath away.