Weather in Singapore in August

How August compares

August is the 9th warmest month of the year in Singapore and ranks 79th of 134 destinations we compare for August - see where else is hot in August. Against London's average high of 21.4°C in August, Singapore is 6.9°C warmer by day and 12.4°C warmer at night.

Daytime and night-time in August

The typical August day in Singapore peaks at 28.3°C, but that is an average: the warmest 10% of days reach 29.2°C or more. About 100% of days top 25°C and 1 in 26 pass 30°C. Nights average 25.9°C; one night in ten drops to 24.8°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest August day here reached 31.5°C (2019-08-20) and the coldest night 23.9°C (1999-08-15).

Rain in August

Wet (more than 8 rainy days): about 25 days with 1 mm or more, 167 mm in total. Year to year it varies a lot - the wettest August was 1998 with 320 mm, the driest 2004 with 75 mm. Humidity averages 81%, which makes the heat feel heavier than the thermometer suggests.

Sea temperature in August

The sea averages 29.1°C - warm enough to swim (22°c+). Depending on the year it ranges from 28.7°C to 29.4°C. For the warmest sea here, come in May (30.1°C).

Sunshine and daylight

Around 2.7 hours of sunshine a day (estimated from cloud cover), 12.0 hours of daylight: the sun rises about 07:04 and sets about 19:14 local time in mid-August. Average cloud cover is 77%.

Is August a good time to visit Singapore?

It is a reasonable choice: hot days but expect showers. The best months for Singapore on our scoring are July, June, March; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Warm evenings, with humidity the main catch

The daytime temperature does not tell the whole story: humidity averages 81%, so walking around can feel more demanding than the thermometer suggests. Days reaching 30°C are uncommon, but that does not make August cool or crisp. Loose, lightweight clothing makes sense, and it is sensible to leave room for indoor breaks rather than planning continuous time outside through midday. Evenings offer little temperature relief, so do not count on sunset bringing the sort of cool air you might expect at home. August suits travellers who enjoy steady warmth more than those who need cool nights or comfortable conditions for prolonged outdoor activity.

Plan around rain, not guaranteed sunshine

Rain is frequent enough to shape your plans, rather than being an occasional inconvenience. Carry a compact umbrella or lightweight waterproof, and keep indoor alternatives available so you can change direction when conditions turn wet. The rainy-day figure does not mean rain lasts all day, but it does mean a fully dry visit is not something to count on. Sunshine averages about 2.7 hours a day, so warm weather should not be confused with clear skies. Avoid making every day depend on dry conditions, and take suitable outdoor opportunities as they come. If sunshine is the main reason for your trip, August is a compromise.