Melipilla, Chile — Weather in September 2026

Climate Overview

Melipilla, Chile in September has mild conditions, with highs averaging 19.2°C (67°F) and noticeably cooler mornings. Rain is rare, falling on about 3 days this month. Temperatures drop noticeably between day and night.

This month falls at the beginning of Spring.

Temperatures remain fairly steady throughout September, with daily highs around 19°C (66°F).

Rainfall is heaviest during the middle of the month, while the last third tends to be drier.

Expect around 9.4h of sunshine at the start of September, increasing to 10.2h by the end.

The warmest days tend to fall around the 25th, averaging 20.6°C (69°F).

Compared to August, this month is about 2°C warmer with 3 fewer rainy days. Temperatures will rise further into October.

Monthly September Averages

Temperature

19°C / 7°C

Feels Like

19°C / 6°C

Rain

3 days · 27 mm

Sunshine

9.9h / day

Humidity

76% — Humid

Wind

11 km/h

Wind Direction

WSW (240°)

Gusts

30 km/h

Daylight

11.9 h

Cloud Cover

51%

Clear Sky Days

5.8

UV Index

5.8 — High

Dew Point

9°C — Dry

Moon Phase

Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

High Low

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 07:44

Daylight 11.9h

Sunset 19:37

Compare Months

1days (7 mm) Excellent

0days (1 mm) Excellent

1days (4 mm) Excellent

2days (31 mm) Excellent

3days (27 mm) Excellent

3days (19 mm) Excellent

1days (6 mm) Excellent

1days (3 mm) Excellent

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January best	28°C / 15°C	30°C / 16°C	1days (7 mm) Excellent	13h Excellent	59% Moderate	9.3 Very High	Excellent	View Details
February best	28°C / 16°C	30°C / 16°C	0days (1 mm) Excellent	12.2h Excellent	62% Muggy	8.6 Very High	Excellent	View Details
March best	27°C / 14°C	27°C / 14°C	1days (4 mm) Excellent	11.3h Excellent	63% Muggy	7.3 Very High	Excellent	View Details
April	23°C / 11°C	22°C / 10°C	2days (31 mm) Excellent	9.5h Good	71% Muggy	5.3 High	Excellent	View Details
May	19°C / 8°C	18°C / 7°C	5days (45 mm) Good	7.8h Good	77% Humid	3.6 Moderate	Good	View Details
June	16°C / 6°C	15°C / 4°C	7days (116 mm) Good	6.7h Fair	81% Humid	2.9 Moderate	Fair	View Details
July	16°C / 5°C	15°C / 3°C	5days (65 mm) Good	7.7h Good	82% Humid	3.4 Moderate	Fair	View Details
August	17°C / 6°C	16°C / 4°C	6days (64 mm) Good	8.6h Good	81% Humid	4.3 Moderate	Good	View Details
September	19°C / 7°C	19°C / 6°C	3days (27 mm) Excellent	9.9h Good	76% Humid	5.8 High	Good	View Details
October	22°C / 10°C	22°C / 9°C	3days (19 mm) Excellent	11.3h Excellent	67% Muggy	7.4 Very High	Excellent	View Details
November best	26°C / 12°C	26°C / 12°C	1days (6 mm) Excellent	12.6h Excellent	59% Moderate	8.7 Very High	Excellent	View Details
December best	27°C / 14°C	29°C / 14°C	1days (3 mm) Excellent	13.2h Excellent	59% Moderate	9.2 Very High	Excellent	View Details

What to Wear

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.

Temperatures drop significantly at night, so pack layers you can add or remove throughout the day.

Packing List

Warm evening layerComfortable walking shoes

Frequently Asked Questions

Expand all

Is September a good time to visit Melipilla?

September is typically good for visiting Melipilla, with average highs of 19°C (67°F) and around 3 rainy days. Melipilla, Chile in September has mild conditions, with highs averaging 19.2°C (67°F) and noticeably cooler mornings. Ra

Does it rain a lot in Melipilla in September?

Melipilla typically sees around 3 rainy days in September with 27 mm (1.1 in) of total rainfall. An umbrella should suffice.

Does it get cold at night in Melipilla in September?

Nights in Melipilla during September are cool at around 7°C (45°F). Bring a jacket or sweater for evenings.

What should I pack for Melipilla in September?

With highs of 19°C (67°F) and lows of 7°C (45°F) in September, we recommend: Warm evening layer, Comfortable walking shoes. Comfortable walking shoes are essential.

Is September among the best months weather-wise in Melipilla?

September is not the most favourable month weather-wise in Melipilla. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Melipilla in September?

The average UV index in Melipilla during September is 6 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.

How many hours of daylight are there in Melipilla in September?

Melipilla gets approximately 12 hours of daylight per day in September, with around 10 hours of sunshine.

Does it snow in Melipilla in September?

Snow is uncommon in Melipilla during September based on 10-year climate averages.

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