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Weather in Valparaíso for September 2025

Your guide to Valparaíso weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Valparaíso has been nearly identical to the historical average, with a temperature of 15.1 °C (showing only a slight deviation of -0.3 °C).

  • The forecast for the upcoming days in Valparaíso predicts a temperature of 17.1 °C, which is slightly above the historical average.

  • In general, the average temperature in Valparaíso at the beginning of September is 15 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 17.1 °C by the end of September.

    • Rain 🌧️

  • With an average of 5 rainy days, Valparaíso 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
15°/9°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Valparaíso Weather September

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

Temperatures trend during September in Valparaíso

See the weather trend as well as the moving average line

September weather in Valparaíso day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Cloudy
Cloudy
 17° /10° 0 mm 5
2 Sept. Light rain
Light rain
 14° /9° 2.2 mm 4
3 Sept. Moderate rain
Moderate rain
 15° /8° 1.7 mm 5
4 Sept. Sunny
Sunny
 15° /9° 0 mm 5
5 Sept. Overcast
Overcast
 16° /9° 0 mm 5
6 Sept. Moderate rain
Moderate rain
 14° /9° 3 mm 4
7 Sept. Overcast
Overcast
 14° /7° 0 mm 4
8 Sept. Overcast
Overcast
 15° /9° 0 mm 5
9 Sept. Sunny
Sunny
 16° /10° 0 mm 5
10 Sept. Sunny
Sunny
 16° /10° 1.6 mm 5
11 Sept. Sunny
Sunny
 17° /9° 0.9 mm 5
12 Sept. Sunny
Sunny
 14° /8° 0 mm 5
13 Sept. Overcast
Overcast
 16° /7° 0 mm 5
14 Sept. Sunny
Sunny
 17° /10° 0 mm 6
15 Sept. Sunny
Sunny
 19° /10° 0 mm 6
16 Sept. Sunny
Sunny
 16° /10° 0 mm 1.7
17 Sept. Sunny
Sunny
 16° /9° 0 mm 1.7
18 Sept. Sunny
Sunny
 17° /10° 0 mm 1.8
19 Sept. Overcast
Overcast
 17° /10° 0 mm 1.8
20 Sept. Patchy rain possible
Patchy rain possible
 16° /10° 3.2 mm 0
21 Sept. Patchy rain possible
Patchy rain possible
 15° /10° 3.5 mm 4
22 Sept. Sunny
Sunny
 19° /10° 0 mm 5
23 Sept. Sunny
Sunny
 19° /10° 0 mm 5
24 Sept. Sunny
Sunny
 18° /11° 0 mm 5
25 Sept. Sunny
Sunny
 16° /11° 0 mm 5
26 Sept. Sunny
Sunny
 17° /10° 0 mm 5
27 Sept. Sunny
Sunny
 17° /10° 0 mm 5
28 Sept. Sunny
Sunny
 16° /10° 0 mm 5
29 Sept. Sunny
Sunny
 20° /10° 0 mm 5
30 Sept. Sunny
Sunny
 16° /10° 0 mm 5
Next
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.
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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.

September rainfall patterns in Valparaíso

Explore the daily rainfall trends and prepare for Valparaísos September weather 💧
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Provincia de Valparaíso
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Location coordinates Where is Valparaíso?

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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