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Weather in Viña del Mar for September 2025

Your guide to Viña del Mar weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Viña del Mar is slightly cooler than the historical average by -0.9 °C.

  • The forecast for the next days in Viña del Mar predicts temperatures to be around 19 °C, close to the historical average.

  • In general, the average temperature in Viña del Mar at the beginning of September is 17 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 18.4 °C by the end of September.

    • Rain 🌧️

  • With an average of 5 rainy days, Viña del Mar experiences minimal rainfall in September.

Average dry days
25
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/8°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
70 %
Avg humidity

Viña del Mar Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Overcast
19°
2
Light rain
16°
3
Light rain
17°
4
Sunny
18°
5
Overcast
18°
6
Moderate rain
15°
7
Overcast
16°
8
Overcast
17°
9
Sunny
19°
10
Sunny
18°
11
Sunny
19°
12
Sunny
15°
13
Overcast
19°
14
Sunny
20°
15
Sunny
23°
16
Sunny
18°
17
Sunny
17°
18
Sunny
18°
19
Overcast
18°
20
Patchy rain possible
16°
21
Patchy rain possible
16°
22
Sunny
23°
23
Sunny
23°
24
Sunny
20°
25
Sunny
16°
26
Sunny
19°
27
Sunny
18°
28
Sunny
17°
29
Sunny
23°
30
Sunny
16°

Temperatures trend during September in Viña del Mar

See the weather trend as well as the moving average line

September weather in Viña del Mar day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Overcast
Overcast
 19° /9° 0 mm 5
2 Sept. Light rain
Light rain
 16° /8° 2.5 mm 5
3 Sept. Light rain
Light rain
 17° /8° 1.1 mm 5
4 Sept. Sunny
Sunny
 18° /8° 0 mm 6
5 Sept. Overcast
Overcast
 18° /8° 0 mm 5
6 Sept. Moderate rain
Moderate rain
 15° /8° 8 mm 4
7 Sept. Overcast
Overcast
 16° /6° 0 mm 4
8 Sept. Overcast
Overcast
 17° /8° 0 mm 5
9 Sept. Sunny
Sunny
 19° /9° 0 mm 6
10 Sept. Sunny
Sunny
 18° /10° 1.6 mm 6
11 Sept. Sunny
Sunny
 19° /9° 3.9 mm 5
12 Sept. Sunny
Sunny
 15° /7° 0 mm 5
13 Sept. Overcast
Overcast
 19° /6° 0 mm 5
14 Sept. Sunny
Sunny
 20° /9° 0 mm 6
15 Sept. Sunny
Sunny
 23° /9° 0 mm 7
16 Sept. Sunny
Sunny
 18° /9° 0 mm 1.7
17 Sept. Sunny
Sunny
 17° /8° 0 mm 1.7
18 Sept. Sunny
Sunny
 18° /8° 0 mm 1.8
19 Sept. Overcast
Overcast
 18° /9° 0 mm 1.8
20 Sept. Patchy rain possible
Patchy rain possible
 16° /9° 2.8 mm 0
21 Sept. Patchy rain possible
Patchy rain possible
 16° /10° 3.7 mm 4
22 Sept. Sunny
Sunny
 23° /10° 0 mm 5
23 Sept. Sunny
Sunny
 23° /10° 0 mm 6
24 Sept. Sunny
Sunny
 20° /11° 0 mm 5
25 Sept. Sunny
Sunny
 16° /10° 0 mm 5
26 Sept. Sunny
Sunny
 19° /9° 0 mm 5
27 Sept. Sunny
Sunny
 18° /10° 0 mm 5
28 Sept. Sunny
Sunny
 17° /10° 0 mm 5
29 Sept. Sunny
Sunny
 23° /10° 0 mm 6
30 Sept. Sunny
Sunny
 16° /8° 0 mm 5
Next
Important Notice
Our weather forecast for Viña del Mar in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Viña del Mar forecast closer to your planned date for the most up-to-date weather information.
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Viña del Mar in September - FAQ

What are the expected maximum and minimum temperatures in Viña del Mar during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Viña del Mar during September?
In September, Viña del Mar can expect light to moderate rainfall, totaling 26.4 mm across approximately 5 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Viña del Mar during September?
The average wind speed in Viña del Mar during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

Viña del Mar water temperatures in September

The average water temperature of the Pacific Ocean near Viña del Mar in September is 11.3 °C. Temperatures remain fairly consistent throughout the month.

What is the water temperature in Viña del Mar in September?
The average water temperature in Viña del Mar in September is 11.3 °C.
Can you swim in Viña del Mar in September?
Dangerously cold water: hypothermia risk is high. Only experienced cold-water swimmers with proper gear should consider entering.

September rainfall patterns in Viña del Mar

Explore the daily rainfall trends and prepare for Viña del Mars September weather 💧

UV exposure in Viña del Mar during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Viña del Mar?

Get accurate weather forecasts for Viña del Mar, located at latitude -33.025 and longitude -71.552. Stay updated with localized weather information tailored for Viña del Mar.

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