Madewa, Brunei — Weather in September 2026

Climate Overview

Madewa, Brunei in September has hot conditions, with highs reaching 30°C (86°F) and afternoons the warmest part of the day. Rain falls on about 21 days this month, totalling around 214 mm. Sea temperature reaches 30.5°C (87°F).

This month falls at the beginning of Autumn.

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.

Expect around 9.1h of sunshine at the start of September, increasing to 9.7h by the end.

The warmest days tend to fall around the 18th, averaging 30.3°C (87°F).

Monthly September Averages

Temperature

30°C / 25°C

Feels Like

37°C / 30°C

Rain

21 days · 214 mm

Sunshine

8.9h / day

Humidity

85% — Very Muggy

Wind

10 km/h

Wind Direction

SSW (199°)

Gusts

27 km/h

Daylight

12.1 h

Cloud Cover

90%

Clear Sky Days

UV Index

8.5 — 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

High Low

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 06:11

Daylight 12.1h

Sunset 18:20

What to Expect

Daytime temperatures around 30°C (86°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.

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	29°C / 24°C	36°C / 29°C	25days (225 mm) Wet	8.9h Good	88% Very Muggy	7.8 Very High	Wet	View Details
February	29°C / 24°C	36°C / 29°C	20days (134 mm) Wet	9.4h Good	86% Very Muggy	8.2 Very High	Wet	View Details
March	30°C / 25°C	37°C / 30°C	24days (198 mm) Wet	9.5h Good	85% Humid	8.7 Very High	Wet	View Details
April	30°C / 25°C	38°C / 30°C	25days (183 mm) Wet	9.7h Good	85% Humid	8.8 Very High	Wet	View Details
May	31°C / 25°C	38°C / 31°C	25days (224 mm) Wet	9.3h Good	86% Very Muggy	8.1 Very High	Wet	View Details
June	30°C / 25°C	37°C / 30°C	20days (192 mm) Wet	9.1h Good	85% Humid	7.7 Very High	Wet	View Details
July	30°C / 25°C	37°C / 30°C	20days (167 mm) Wet	9.3h Good	84% Humid	7.8 Very High	Wet	View Details
August	30°C / 25°C	37°C / 30°C	22days (203 mm) Wet	9.2h Good	84% Humid	8.2 Very High	Wet	View Details
September	30°C / 25°C	37°C / 30°C	21days (214 mm) Wet	8.9h Good	85% Humid	8.5 Very High	Wet	View Details
October	30°C / 25°C	36°C / 29°C	27days (261 mm) Wet	8.7h Good	87% Very Muggy	8 Very High	Wet	View Details
November	29°C / 24°C	36°C / 30°C	26days (267 mm) Wet	8.8h Good	88% Very Muggy	7.9 Very High	Wet	View Details
December	29°C / 24°C	35°C / 29°C	27days (270 mm) Wet	8.5h Good	88% Very Muggy	7.2 Very High	Wet	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 jacketWaterproof shoesBreathable clothingSunscreen (SPF 30+)Sun hatSunglasses

Frequently Asked Questions

Expand all

Is September a good time to visit Madewa?

September is typically wet for visiting Madewa, with average highs of 30°C (86°F) and around 21 rainy days. Madewa, Brunei in September has hot conditions, with highs reaching 30°C (86°F) and afternoons the warmest part of the d

Does it rain a lot in Madewa in September?

Madewa typically sees around 21 rainy days in September with 214 mm (8.4 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Madewa in September?

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

What should I pack for Madewa in September?

With highs of 30°C (86°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 Madewa?

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

What is the UV index in Madewa in September?

The average UV index in Madewa during September is 9 (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 Madewa in September?

Madewa gets approximately 12 hours of daylight per day in September, with around 9 hours of sunshine.

Does it snow in Madewa in September?

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

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