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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.
Viña del Mar Weather in September
During September, Viña del Mar experiences moderate daytime temperatures of 16°C (61°F) and cooler nights around 10°C (50°F). Some rainfall is typical during this period.
Rainfall in Viña del Mar in September
You can expect rain on around 3 days based on historical patterns, with 29 mm (1.1 in) average for the month. When rain does fall this month, it tends to come down hard. The low number of rain days makes each shower more significant.
Temperature in Viña del Mar in September
Temperatures in Viña del Mar in September top out at 16°C (61°F) and drop to 10°C (50°F) overnight. The difference between afternoon and evening temperatures is usually noticeable. Nights drop to 10°C (50°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Viña del Mar in September
The month brings about 147 hours of sunlight, offering a comfortable mix of sun and overcast.For Viña del Mar itself, January, February, March, April, November and December generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Viña del Mar Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
16°C (61°F)
Chance of Rain
10%
Precipitation
29 mm (1.1 in)
Rainy days
3 days
Humidity
78% *
Sunshine
147 hours *
Percentage Sunshine
*
* Data from: Valparaíso, Chile (6 KM, 4 Miles).
Viña del Mar Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Viña del Mar - and find the best time to visit.
Daily Historical Temperatures
41-year average (1976-2025)
Based on our historical records, temperatures in Viña del Mar typically stay consistent throughout September, with daily highs averaging around 16°C (61°F). Nights are cool, with lows around 9°C (48°F).
Average temperatures in September
Historical weather records for Viña del Mar in September
Browse day-by-day weather records for Viña del Mar spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Viña del Mar historical weather extremes in September
Based on 30 years of weather observations (1996-2026), these are the most extreme conditions recorded in Viña del Mar.
- On September 26, 2011, temperatures climbed to 29°C (84°F), marking the warmest September day on record.
- On September 27, 2009, Viña del Mar saw its coldest September day with temperatures maxing out at 11°C (52°F).
- The coldest night in September in Viña del Mar was on September 19, 2022, with a minimum of 2°C (36°F).
Best Places in Chile in September
Find out more about the weather in Chile and which places have the best travel conditions in this month. See all of Chile in September →
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 Viña del Mar in September
The weather can swing between comfortable and chilly in September, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Light rain is possible, so consider bringing a small umbrella or rain jacket. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Viña del Mar in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming5/10 -
Cycling6/10 -
Walking6/10 -
Camping5/10 -
Outdoor sports10/10
Viña del Mar 3-Day Forecast
More climate data for Viña del Mar
Temperature Rainfall Sunshine Humidity
See the full Viña del Mar climate overview or explore weather in Chile.
Popular in September
Where to go in September - average daytime high across popular destinations.
San Pedro de Atacama
21°C (70°F) Hanga Roa
21°C (70°F) La Serena19°C (66°F) Santiago18°C (64°F) Viña del Mar16°C (61°F) Concón16°C (61°F) Valparaíso15°C (59°F) Pucón
13°C (55°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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