Millburn, United States — Weather in August 2026

Climate Overview

Millburn, United States in August has hot conditions, with highs reaching 28.3°C (83°F) and afternoons the warmest part of the day. Rain falls on about 12 days this month. Sea temperature reaches 26.6°C (80°F).

This month falls at the end of Summer.

Temperatures remain fairly steady throughout August, with daily highs around 28°C (82°F).

August sees fairly even rainfall, totalling about 102 mm across the month.

Expect around 10.8h of sunshine at the start of August, decreasing to 9.8h by the end.

The warmest days tend to fall around the 11th, averaging 29.4°C (85°F).

Compared to July, this month is about 1°C cooler with 2 fewer rainy days. Temperatures begin dropping heading into September.

Monthly August Averages

Temperature

28°C / 20°C

Feels Like

31°C / 22°C

Rain

12 days · 102 mm

Sunshine

10.3h / day

Humidity

73% — Muggy

Wind

14 km/h

Wind Direction

WSW (251°)

Gusts

31 km/h

Daylight

13.7 h

Cloud Cover

57%

Clear Sky Days

3.8

UV Index

6.6 — High

Sea Temperature

27°C

Dew Point

19°C — Humid

Moon Phase

Waxing Crescent · 3%

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 06:09

Daylight 13.8h

Sunset 19:58

What to Expect

Daytime temperatures around 28°C (83°F) are ideal for full-day outdoor exploration. 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.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	4°C / -3°C	0°C / -7°C	9days (88 mm) Wet	6h Fair	67% Muggy	2.3 Moderate	Poor	View Details
February	7°C / -2°C	3°C / -6°C	9days (90 mm) Wet	6.7h Fair	69% Muggy	3.4 Moderate	Poor	View Details
March	11°C / 2°C	7°C / -3°C	10days (101 mm) Wet	8.1h Good	66% Muggy	4.6 Moderate	Poor	View Details
April	16°C / 7°C	14°C / 3°C	12days (106 mm) Wet	8.7h Good	67% Muggy	5.3 High	Fair	View Details
May best	21°C / 12°C	21°C / 10°C	12days (109 mm) Wet	9.3h Good	72% Muggy	6.2 High	Excellent	View Details
June best	27°C / 17°C	28°C / 18°C	11days (85 mm) Wet	11.2h Excellent	70% Muggy	6.9 High	Excellent	View Details
July best	30°C / 21°C	33°C / 24°C	14days (129 mm) Wet	11.5h Excellent	73% Muggy	7.2 Very High	Good	View Details
August best	28°C / 20°C	31°C / 22°C	12days (102 mm) Wet	10.3h Excellent	73% Muggy	6.6 High	Excellent	View Details
September best	25°C / 17°C	26°C / 17°C	10days (97 mm) Wet	8.7h Good	74% Muggy	5 Moderate	Excellent	View Details
October	19°C / 11°C	18°C / 9°C	9days (102 mm) Wet	7.3h Good	74% Muggy	4.1 Moderate	Good	View Details
November	12°C / 4°C	9°C / 1°C	8days (78 mm) Wet	7h Good	70% Muggy	2.9 Moderate	Fair	View Details
December	6°C / -1°C	3°C / -5°C	11days (104 mm) Wet	5.7h Fair	72% Muggy	2 Low	Poor	View Details

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

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

Packing List

UmbrellaWaterproof jacketBreathable clothingSunscreen (SPF 30+)Sun hatSunglassesComfortable walking shoes

Frequently Asked Questions

Expand all

Is August a good time to visit Millburn?

August is typically excellent for visiting Millburn, with average highs of 28°C (83°F) and around 12 rainy days. Millburn, United States in August has hot conditions, with highs reaching 28.3°C (83°F) and afternoons the warmest part

Does it rain a lot in Millburn in August?

Millburn typically sees around 12 rainy days in August with 102 mm (4 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Millburn in August?

Nights stay pleasantly warm in Millburn during August, around 20°C (68°F). Light evening wear is sufficient.

What should I pack for Millburn in August?

With highs of 28°C (83°F) and lows of 20°C (68°F) in August, we recommend: Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. Comfortable walking shoes are essential.

Is August among the best months weather-wise in Millburn?

Yes, August offers some of the best weather conditions in Millburn with comfortable temperatures and lower chances of rain.

What is the UV index in Millburn in August?

The average UV index in Millburn during August is 7 (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 Millburn in August?

Millburn gets approximately 14 hours of daylight per day in August, with around 10 hours of sunshine.

Does it snow in Millburn in August?

Snow is uncommon in Millburn during August based on 10-year climate averages.

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