Singapore weather in August - temperature, rain and is it a good time to visit?

Based on NASA POWER historical data from 1981–2025. Temperatures are averages of daily highs and lows; precipitation is the share of days with at least 1 mm. Each month includes at least 45 years of data. Data for the reference point used for this country.

Weather in August at a glance

Daytime temperature: 29°C
Night-time temperature: 25°C
Sea temperature: 30°C
Daylight hours: 12h09min
Chance of rain: 71%

An overview for the country. Conditions can vary between cities and regions.

Plan your trip · August

Singapore in August: weather for a week away

See how many days of a typical trip met your preferred temperature range, with less than 1 mm of daily precipitation.

Based on historical dataNASA POWER1981-2025

Compare with history

What weather do you prefer?

Singapore in August: Sightseeing

1981-2025

Daytime temperature 18-28°CDaily precipitation Less than 1 mm

Days matching your plans

0 / 7

Weekly average; typical number of days: 0

At least 5 matching days

of historical weeks

All 7 days match

of historical weeks

How many matching days were there in a week?

Each bar shows the share of historical weeks.

97%

0days

1day

<1%

2days

3days

4days

5days

6days

7days

5-7 days matching your preferences

When to go? Compare the months

Average matching days per week

0.5Jan 0.2Feb 0Mar 0Apr 0May 0Jun 0.1Jul 0Aug 0.1Sept 0Oct 0.1Nov 0.3Dec

The highest average was in January: 0.5 matching days per week.

Singapore · 1981-2025

Hot days and warm nights in August

Does the temperature drop below 20°C during hot weather?

100%of hot days with a minimum ≥20°C

100%of weeks with at least 3 warm nights*

On 100% of hot days, the temperature stayed at or above 20°C even at its coolest. This covers 251 days with a maximum of at least 30°C.

Lowest temperature on hot days

Below 18°C0%

18°C to below 20°C0%

At least 20°C100%

* A warm night is represented by the daily minimum ≥20°C. Maximum and minimum refer to the same day; this does not isolate the night following a particular hot day.

Singapore · Your holiday week

How much can temperatures change during a week?

Check cooler hours as well as afternoon temperatures.

Coolest time of day24.5-25.2°CWeekly minimum: typical range

Warmest day29.5-30.6°CWeekly maximum: typical range

1.6°CTypical difference between the highest and lowest daytime maxima in a week

How often does it get cooler from one day to the next?

0%of weeks with a day-to-day drop in maximum temperature of at least 5°C

Daytime temperatures usually changed gradually, but allow for cooler hours when packing.

Ranges show the 20th-80th percentiles of whole-week minima and maxima in the historical data. Cooling compares consecutive daily maxima.

Where do the figures come from?

The analysis includes 1,125 complete 7-day periods out of 1,125 possible periods in 45 years (1981-2025), for Singapore. Every week lies entirely within the selected month. Overlapping weeks are not independent samples. Incomplete weeks are excluded.

A matching day has a daily maximum within the selected temperature range, inclusive, and precipitation below 1 mm. Trace precipitation is possible. The typical range is the 20th-80th percentile of matching days per week. Daily percentages count each calendar day once; categories can overlap.

We use daily NASA POWER MERRA-2 grid data for each location. The comparison shows how often the selected temperature and precipitation conditions occurred in complete historical periods. NASA POWER Daily API.

Based on historical weather data for the selected location.

Singapore - August vs the year - annual climate

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In August, Singapore averages about 29° during the day and 25° at night. Rain is fairly likely - around a 71% chance on a given day, so pack for showers. The sea is around 30°C - very warm for swimming.

Historical weather 1981-2025

Weather in Singapore in August: trends from 1981 to 2025

NASA POWER

From 2016 to 2025, the average daytime high was 29.6°C, 0.4°C warmer than in 1981-1990. 2019 was the warmest (30.4°C), while 1996 was the coolest (28.3°C).

Differences between years

How similar is the weather in August from year to year?

In 43% of the years compared, temperature and the number of wet days were close to typical for this month.

Similar means an average daily maximum within 2°C and a wet-day count within 3 days of the 1991-2020 medians.

43%of years with similar conditions

Typical average daytime high28.9°C–29.5°C

Typical number of wet days18–27 days

Daytime temperatures in August: year by year

Monthly average daily maximum temperature: compare individual years and the longer-term trend.

45 years of data

Coolest month28.3°C 1996

Warmest month30.4°C 2019

Latest year in the data29.6°C 2025

Average for each year5-year average1991-2020 reference: 29.2°C

The blue band shows the 20th-80th percentile of monthly averages in 1991-2020. The thicker line shows a five-year moving average. Highlighted values are averages for full months.

View temperatures for every year

Year	Average daytime maximum	5-year average
1981	29.8°C	-
1982	30.1°C	-
1983	29.7°C	-
1984	28.6°C	-
1985	29.2°C	29.5°C
1986	28.8°C	29.3°C
1987	29.1°C	29.1°C
1988	28.8°C	28.9°C
1989	28.4°C	28.9°C
1990	29.2°C	28.9°C
1991	29.7°C	29°C
1992	28.9°C	29°C
1993	29°C	29°C
1994	29.2°C	29.2°C
1995	28.7°C	29.1°C
1996	28.3°C	28.8°C
1997	30.1°C	29.1°C
1998	29°C	29.1°C
1999	28.7°C	29°C
2000	28.4°C	28.9°C
2001	28.9°C	29°C
2002	29.1°C	28.8°C
2003	29.2°C	28.9°C
2004	29.3°C	29°C
2005	28.8°C	29.1°C
2006	29.2°C	29.1°C
2007	28.7°C	29°C
2008	28.9°C	29°C
2009	29.3°C	29°C
2010	29.2°C	29.1°C
2011	29.4°C	29.1°C
2012	29.7°C	29.3°C
2013	29.3°C	29.4°C
2014	29.5°C	29.4°C
2015	29.7°C	29.5°C
2016	29.7°C	29.6°C
2017	29.3°C	29.5°C
2018	29.5°C	29.5°C
2019	30.4°C	29.7°C
2020	29.4°C	29.7°C
2021	28.8°C	29.5°C
2022	29.3°C	29.5°C
2023	29.9°C	29.6°C
2024	29.7°C	29.4°C
2025	29.6°C	29.5°C

How has August changed since the 1980s?

A comparison of 1981-1990 with 2016-2025 shows how temperatures, rainfall and the frequency of longer hot spells have changed.

In the latest decade, the average daytime high was 0.4°C warmer than in 1981-1990.

Daytime high

1981-199029.2°C2016-202529.6°C

change: +0.4°C

Hot days

1981-19905.3 days2016-20259 days

change: +3.7 days

Warm nights

1981-199031 days2016-202531 days

change: 0 days

Wet days

1981-199017.9 days2016-202526.2 days

change: +8.3 days

Years with a heatwave

1981-199020%2016-202540%

change: +20 pp

How often does August bring heat, frost and rain?

Typical number of days and monthly precipitation based on the 1991-2020 climate normal.

Warm days31 dayshigh of at least 25°C

Hot days3 dayshigh of at least 30°C

Frost nights0 dayslow below 0°C

Warm nights31 dayslow of at least 20°C

Wet days23 daysat least 1 mm

Monthly rainfall182 mmtypical total

How often does it rain in Singapore in August?

The chances use every consecutive 3-, 5- and 7-day period from 1981 to 2025. A wet day has at least 1 mm of precipitation.

A full seven days without rain occurred in 2% of historical periods. At least one wet day occurred in 98% of weeks.

3 rain-free days9%historical chance

5 rain-free days3%historical chance

7 rain-free days2%historical chance

Longest dry spell3 daystypical in the month

Longest wet spell10 daystypical in the month

Heatwaves, warm nights and cool spells in August

The percentages show years with at least one run of three consecutive days or nights meeting the stated threshold.

Heatwave27%3 days with highs of at least 30°C12 of 45 years · most often: Days 1-10

Run of warm nights100%3 nights with lows of at least 20°C45 of 45 years · most often: Days 1-10

Run of frosty nights0%3 nights with lows below 0°C0 of 45 years

Marked cool spell42%3 days with highs no greater than 28.5°C19 of 45 years · most often: Days 11-20

Highest and lowest values since 1981

Highest temperature32.6°C3 August 1982

Coolest night23.6°C3 August 1985

Wettest day232.9 mm12 August 2023

Start, middle or end of the month - when is the weather most stable?

We compare temperatures, dry days, heavy rain and wind. The highlighted period usually has the lowest combined risk of rain and stronger winds.

Days 1-10most stable

29.2°CDaytime high25.3°CNight

Dry days: 3 days
Heavy-rain risk: 14%
Hot days: 13%
Stronger wind: 0%

Days 11-20

29.3°CDaytime high25.3°CNight

Dry days: 3 days
Heavy-rain risk: 16%
Hot days: 21%
Stronger wind: 0%

Day 21 to month end