Singapore, Singapore — Weather in September 2026

Climate Overview

Singapore, Singapore in September has hot conditions, with highs reaching 28.5°C (83°F) and afternoons the warmest part of the day. Rain falls on about 24 days this month, totalling around 193 mm. Sea temperature reaches 29.7°C (85°F).

This month falls at the beginning of Autumn.

Temperatures remain fairly steady throughout September, with daily highs around 29°C (84°F).

September sees fairly even rainfall, totalling about 192 mm across the month.

Expect around 9.3h of sunshine at the start of September, increasing to 9.8h by the end.

The warmest days tend to fall around the 30th, averaging 28.8°C (84°F).

Monthly September Averages

Temperature

29°C / 26°C

Feels Like

34°C / 31°C

Rain

24 days · 193 mm

Sunshine

9.4h / day

Humidity

81% — Very Muggy

Wind

13 km/h

Wind Direction

S (174°)

Gusts

29 km/h

Daylight

12.1 h

Cloud Cover

84%

Clear Sky Days

UV Index

8.1 — Very High

Sea Temperature

30°C

Dew Point

24°C — Muggy

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 06:58

Daylight 12.1h

Sunset 19:05

What to Expect

Daytime temperatures around 29°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.

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	28°C / 25°C	33°C / 29°C	23days (263 mm) Wet	8.6h Good	84% Humid	6.6 High	Wet	View Details
February best	29°C / 25°C	34°C / 29°C	17days (115 mm) Wet	10h Excellent	82% Humid	8.5 Very High	Fair	View Details
March	29°C / 26°C	35°C / 30°C	23days (227 mm) Wet	10.1h Excellent	82% Humid	8.3 Very High	Wet	View Details
April	29°C / 26°C	36°C / 31°C	27days (269 mm) Wet	9.6h Good	84% Humid	8.4 Very High	Wet	View Details
May	29°C / 26°C	36°C / 32°C	29days (248 mm) Wet	9.4h Good	83% Humid	7.6 Very High	Wet	View Details
June	29°C / 26°C	35°C / 31°C	25days (210 mm) Wet	9h Good	82% Humid	7.6 Very High	Wet	View Details
July	29°C / 26°C	34°C / 31°C	22days (145 mm) Wet	9.8h Good	80% Humid	7.8 Very High	Wet	View Details
August	29°C / 26°C	34°C / 31°C	24days (196 mm) Wet	9.7h Good	81% Humid	8.3 Very High	Wet	View Details
September	29°C / 26°C	34°C / 31°C	24days (193 mm) Wet	9.4h Good	81% Humid	8.1 Very High	Wet	View Details
October	29°C / 26°C	35°C / 31°C	26days (270 mm) Wet	9h Good	83% Humid	8.6 Very High	Wet	View Details
November	28°C / 25°C	34°C / 30°C	28days (375 mm) Wet	7.7h Good	85% Humid	7.3 Very High	Wet	View Details
December best	28°C / 25°C	34°C / 30°C	26days (281 mm) Wet	8.1h Good	84% Humid	7 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 Singapore?

September is typically wet for visiting Singapore, with average highs of 29°C (83°F) and around 24 rainy days. Singapore, Singapore in September has hot conditions, with highs reaching 28.5°C (83°F) and afternoons the warmest part

Does it rain a lot in Singapore in September?

Singapore typically sees around 24 rainy days in September with 193 mm (7.6 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Singapore in September?

Nights stay pleasantly warm in Singapore during September, around 26°C (79°F). Light evening wear is sufficient.

What should I pack for Singapore in September?

With highs of 29°C (83°F) and lows of 26°C (79°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 Singapore?

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

What is the UV index in Singapore in September?

The average UV index in Singapore 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 Singapore in September?

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

Does it snow in Singapore in September?

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

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