Singapore Weather by Month: Rain, Heat and When to Go

February is the pick. It’s the driest month, with 105.1 mm of rain on 9 rain days, and it’s one of the two sunniest, along with March. Seven of the 14 guides that Roam Singapore read name February to April as the best window. Singapore is hot and humid every month, so the question is mostly how much rain you’ll put up with. November and December are the wettest, with 252.3 mm and 331.9 mm.

The picks below are ordered by how many guides name them. Roam Singapore read 14 guides in English, German, Spanish, French and Japanese. Every temperature, rainfall figure and season on this page comes from the Meteorological Service Singapore (MSS), not from those guides. Dates for holidays come from the Ministry of Manpower.

The short list

Singapore weather by month

The figures are the 1991 to 2020 climate station means at Changi, from the MSS Climate of Singapore page. A rain day is a day with 0.2 mm or more. The annual total is 2,113.3 mm over an average of 171 rain days.

These are averages. One week can be much wetter or drier than its month, so check the forecast before you fly. The whole table sits in a narrow band. MSS says daytime highs usually don’t rise above 31 to 33°C and nights usually don’t fall below 23 to 25°C, and that May is the warmest month on average (28.6°C) and December and January the coolest (26.8°C).

The seasons

You don’t need to plan around the monsoons, but it helps to know which one you’re in. MSS describes two monsoons with inter-monsoon periods between them. The Northeast Monsoon runs from December to early March. It’s wettest in its early phase, from December to early January, when monsoon surges bring widespread, continuous moderate to heavy rain. The later phase, from late January to early March, is windier and relatively dry. The Southwest Monsoon runs from June to September. April, May, October and November are the inter-monsoon months, with light and variable winds.

Thunderstorms are the other pattern. MSS lists afternoon and evening thunderstorms driven by heat and the sea breeze, and Sumatra squalls, which are lines of thunderstorms that cross the island. April, May, October and November have the most thunderstorm days, with 17 to 20. Pack a small umbrella, and don’t plan your best outdoor hour for late afternoon, because you’ll often get a storm then.

When to go

• February and March are the sunniest months, per MSS, and February is the driest. If you can choose your dates, choose these. The trade-off is Chinese New Year, which falls on 6 and 7 February in 2027, and prices and crowds that go with it.
• April and May are the hottest, with average highs of 32.4°C and 32.3°C and the most thunderstorm days.
• June to September has less rain than most months, at 125 to 147 mm, but MSS says slight to moderate haze is common in the Southwest Monsoon months and can cut visibility. In a severe regional haze episode it has recorded visibility under 1 km. If you’re sensitive to smoke, MSS publishes haze information you can check before you go.
• October and November are inter-monsoon months, with 168.3 and 252.3 mm. November is the start of the wet stretch, and it has the lowest sunshine hours with December.
• December and January are wet, and the coolest months by a degree or so. If your dates are fixed, you’ll still get dry hours each day, so use them.

Six guides bring up cheaper hotels in the off-season. No official source prints a hotel price for this guide, so check rates for your dates.

Festivals by month

Dates here are public holidays from the Ministry of Manpower. Event schedules change, so the events page has the rest from the organisers’ own pages.

• February 2027 is Chinese New Year, on 6 and 7 February.
• March 2027 has Hari Raya Puasa on 10 March.

• August has National Day on 9 August, a Monday in 2027.

• Autumn brings the Mid-Autumn lantern displays in Chinatown.

• October or November is Deepavali. In 2026 it was on 8 November, and in 2027 it’s on 28 October, and Serangoon Road in Little India is where the lights go up.

Six guides also bring up the Singapore Grand Prix and five the Great Singapore Sale. Neither date is printed on a page this guide can check, so look at the events page and the organisers’ own sites for the year you’re going.

What to pack

Light clothes and a small umbrella, because 9 guides mention one and the numbers show why. Sun protection matters even on a wet day. You’ll walk through air conditioning and into heat all day, so a thin layer helps indoors.

For the rest of the trip, see things to do in Singapore and where to stay.

Places in this guide

Photos show the actual places, licensed under Creative Commons and credited to their photographers.

Sri Mariamman Temple Chinatown · near Chinatown Station Photo: Tony Hisgett Abdul Gafoor Mosque Little India · near Rochor Station Photo: Khalzuri Yazid