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Weather in Valparaíso for September 2025

Your guide to Valparaíso weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Valparaíso at the beginning of September is 15.3 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 16.1 °C by the end of September.

    • Rain 🌧️

  • With an average of 5 rainy days, Valparaíso experiences minimal rainfall in September.

    • More

  • Is September a good time to visit Valparaíso? check out the best time to travel to Valparaíso page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
25
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
15°/9°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Valparaíso in September average weather

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

See the weather trend as well as the moving average line
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September weather day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Cloudy
Cloudy
 16° /10° 0 mm 5
2 Sept. Light rain
Light rain
 14° /9° 3.4 mm 4
3 Sept. Moderate rain
Moderate rain
 15° /9° 2.5 mm 5
4 Sept. Overcast
Overcast
 16° /9° 0 mm 5
5 Sept. Overcast
Overcast
 17° /10° 0 mm 5
6 Sept. Moderate rain
Moderate rain
 14° /9° 4.5 mm 4
7 Sept. Overcast
Overcast
 15° /7° 0 mm 5
8 Sept. Overcast
Overcast
 16° /9° 0 mm 5
9 Sept. Overcast
Overcast
 16° /10° 0 mm 5
10 Sept. Cloudy
Cloudy
 15° /10° 2.3 mm 5
11 Sept. Patchy rain possible
Patchy rain possible
 16° /9° 1.4 mm 5
12 Sept. Sunny
Sunny
 14° /8° 0 mm 5
13 Sept. Overcast
Overcast
 16° /7° 0 mm 5
14 Sept. Partly cloudy
Partly cloudy
 18° /10° 0 mm 6
15 Sept. Sunny
Sunny
 19° /11° 0 mm 6
16 Sept. Sunny
Sunny
 17° /9° 0 mm 5
17 Sept. Sunny
Sunny
 14° /8° 0 mm 4
18 Sept. Overcast
Overcast
 14° /9° 0.6 mm 4
19 Sept. Overcast
Overcast
 15° /9° 0.5 mm 4
20 Sept. Partly cloudy
Partly cloudy
 15° /9° 0 mm 5
21 Sept. Partly cloudy
Partly cloudy
 15° /8° 0 mm 5
22 Sept. Partly cloudy
Partly cloudy
 14° /10° 0.1 mm 4
23 Sept. Overcast
Overcast
 15° /9° 0.1 mm 4
24 Sept. Sunny
Sunny
 16° /8° 0.1 mm 6
25 Sept. Sunny
Sunny
 15° /8° 0 mm 5
26 Sept. Sunny
Sunny
 16° /8° 0.1 mm 5
27 Sept. Sunny
Sunny
 17° /9° 0 mm 5
28 Sept. Overcast
Overcast
 18° /9° 0 mm 5
29 Sept. Sunny
Sunny
 15° /9° 0 mm 5
30 Sept. Sunny
Sunny
 16° /10° 0 mm 5
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Important Notice
Our weather forecast for Valparaíso 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 Valparaíso forecast closer to your planned date for the most up-to-date weather information.

Valparaíso in September - FAQ

What are the expected maximum and minimum temperatures in Valparaíso during September?
During September, expect a variety of temperatures with highs around 15° and lows near 9°, suitable for diverse activities and preferences.
How much rainfall should be expected in Valparaíso during September?
Expect minimal rainfall in Valparaíso during September, with a total of 15.6 mm over approximately 5 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Valparaíso during September?
The average wind speed in Valparaíso during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Valparaíso in September?

As you prepare for your trip to Valparaíso in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Valparaíso, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long pants
  • Accessories
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather

September rainfall patterns in Valparaíso

Explore the daily rainfall trends and prepare for Valparaísos September weather 💧
Provinces in Valparaíso
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Provincia de Valparaíso
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Viña del Mar
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Get accurate weather forecasts for Valparaíso, located at latitude -33.036 and longitude -71.63. Stay updated with localized weather information tailored for Valparaíso.

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