Sunset, United States — Weather in September 2026

Climate Overview

Sunset, United States in September has hot conditions, with highs reaching 30.4°C (87°F) and afternoons the warmest part of the day. Rain falls on about 23 days this month, totalling around 211 mm. Sea temperature reaches 30.7°C (87°F).

This month falls at the beginning of Autumn. The combination of heat and frequent rain creates tropical monsoon conditions.

Temperatures remain fairly steady throughout September, with daily highs around 30°C (86°F).

September sees fairly even rainfall, totalling about 212 mm across the month.

The warmest days tend to fall around the 16th, averaging 30.8°C (87°F).

Monthly September Averages

Temperature

30°C / 25°C

Feels Like

36°C / 29°C

Rain

23 days · 211 mm

Sunshine

9.8h / day

Humidity

84% — Very Muggy

Wind

17 km/h

Wind Direction

ESE (110°)

Gusts

31 km/h

Daylight

12.3 h

Cloud Cover

69%

Clear Sky Days

0.8

UV Index

7.6 — Very High

Sea Temperature

31°C

Dew Point

25°C — Oppressive

Moon Phase

Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 07:09

Daylight 12.3h

Sunset 19:28

What to Expect

Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain most often builds later in the day, so mornings are typically the driest window and afternoon showers are more likely.

Recent yearly records for September have stayed close to the long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January best	24°C / 17°C	24°C / 15°C	8days (52 mm) Wet	8.5h Good	74% Muggy	4.7 Moderate	Excellent	View Details
February best	26°C / 19°C	27°C / 19°C	6days (38 mm) Good	9.9h Good	75% Muggy	6.2 High	Excellent	View Details
March best	27°C / 19°C	28°C / 19°C	5days (39 mm) Good	10.5h Excellent	69% Muggy	7.4 Very High	Excellent	View Details
April	29°C / 21°C	30°C / 22°C	10days (56 mm) Wet	11.3h Excellent	70% Muggy	8.4 Very High	Good	View Details
May	30°C / 23°C	33°C / 25°C	14days (120 mm) Wet	11.4h Excellent	74% Muggy	8.7 Very High	Fair	View Details
June	30°C / 25°C	36°C / 29°C	21days (199 mm) Wet	10.7h Excellent	82% Humid	8 Very High	Wet	View Details
July	31°C / 25°C	37°C / 30°C	23days (138 mm) Wet	11.3h Excellent	82% Humid	8.3 Very High	Wet	View Details
August	31°C / 25°C	37°C / 30°C	24days (180 mm) Wet	10.6h Excellent	83% Humid	8.3 Very High	Wet	View Details
September	30°C / 25°C	36°C / 29°C	23days (211 mm) Wet	9.8h Good	84% Humid	7.6 Very High	Wet	View Details
October	29°C / 23°C	32°C / 26°C	17days (132 mm) Wet	9.3h Good	80% Humid	6.5 High	Good	View Details
November best	27°C / 20°C	28°C / 21°C	10days (78 mm) Wet	9.2h Good	77% Humid	5.4 High	Excellent	View Details
December best	25°C / 19°C	26°C / 18°C	8days (65 mm) Wet	8.6h Good	77% Humid	4.5 Moderate	Excellent	View Details

What to Wear

Light, breathable fabrics like cotton and linen are essential. Opt for loose-fitting clothing in light colors to stay cool.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaWaterproof jacketWaterproof shoesBreathable clothingSunscreen (SPF 30+)Sun hatSunglasses

Frequently Asked Questions

Expand all

Is September a good time to visit Sunset?

September is typically wet for visiting Sunset, with average highs of 30°C (87°F) and around 23 rainy days. Sunset, United States in September has hot conditions, with highs reaching 30.4°C (87°F) and afternoons the warmest part

Does it rain a lot in Sunset in September?

Sunset typically sees around 23 rainy days in September with 211 mm (8.3 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Sunset in September?

Nights stay pleasantly warm in Sunset during September, around 25°C (76°F). Light evening wear is sufficient.

What should I pack for Sunset in September?

With highs of 30°C (87°F) and lows of 25°C (76°F) in September, we recommend: Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). Comfortable walking shoes are essential.

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

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

What is the UV index in Sunset in September?

The average UV index in Sunset during September is 8 (very high). Strong sun protection is essential — SPF 50+, protective clothing, and avoid prolonged outdoor exposure during peak hours.

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

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

Does it snow in Sunset in September?

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

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