Weather in Singapore

May is the warmest month (average 28.3°C, high 30.3°C) and January is the coolest (average 26.3°C, low 24.1°C). That 2.0°C swing in monthly averages is the first thing to plan around in Singapore.

Rain is rain in every month and about 2368 mm across the year. The wettest month is December at 301 mm; the driest is February at 103 mm. Singapore is in Singapore at 1.3°N. The 2001–2020 NASA POWER daily record describes an equatorial climate that stays hot and wet. On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are December, January, and February.

How warm Singapore gets

Singapore has a 2.0°C gap between its coolest monthly average (26.3°C in January) and its warmest (28.3°C in May). That is a northern-hemisphere pattern.

Across the year the mean afternoon high is 29.4°C. If you want the smallest day–night shock, look at months where the high and low sit close together; May nights still hold 26.3°C.

Rainfall pattern

Rain does not take a season off. Singapore receives about 2368 mm a year, and even February still sees 103 mm. December is the peak at 301 mm and 26 days with at least 1 mm.

Humidity peaks near 88%. That usually lines up with the wetter months rather than the hottest ones.

The calendar in Singapore

The year bottoms out in January. Plan for 24.1°C at night and 28.5°C in the afternoon. February is the driest month, averaging only 103 mm across 12 rainy days. Highs sit near 29.2°C. March brings 168 mm and 20 rainy days; temperatures run from 24.8°C to 29.9°C.

Peak heat arrives in May: 30.3°C by day, 26.3°C at night, and 83% humidity. November stands apart from the months beside it: 29.1°C / 25.2°C and 283 mm. December is the wettest month — 301 mm and 26 rainy days, with 88% humidity.

When the score favours a visit

The three months with the highest comfort score are December, January, and February: December (26.6°C average, 301 mm, 88% humidity); January (26.3°C average, 235 mm, 88% humidity); February (26.6°C average, 103 mm, 86% humidity). Those months sit across the year end, so they are listed in season order rather than January-to-December. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you prefer the hottest stretch, that is May. The coolest stretch is January.

Singapore and other cities in Singapore

Singapore is the only Singapore city in this dataset, so the figures on this page are the national sample we publish. They still come from the same NASA POWER daily series (2001–2020) used everywhere else on the site.