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Singapore Weather in May

Wondering what to expect from the Singapore weather in May? We take a look here, including the temperature, humidity and rainfall.

Thunderstorm over Marina Bay Sands Singpaore.

Weather in Singapore in May

May is in the inter-monsoon period in Singapore (between the Northeast Monsoon and Southwest Monsoon seasons). 

This means that hot afternoons are common (maximum temperatures above 32°C (90°F) and thunderstorms can be expected in the afternoons and early evenings. 

Along with June, May has the highest average monthly temperatures, with this being 28.6°C (83°F). Humidity is average for Singapore with a 82.3% average and rainfall is also average, with rain expected half of the days in the month.

Click here to read about the best time to visit Singapore.

Singapore temperature in May

Singapore’s average day time maximum temperature in May is 32.3°C (90°F), with an average minimum temperature of 25.7°C (78°F) and a 24-hour average of 28.6°C (83°F).

How much does it rain in Singapore in May?

It rains on average 15 out of 31 days during May in Singapore, meaning you can expect rain on half of the days in the month. 

Afternoon thunderstorms are common and can bring torrential rain. Pack an umbrella and carry it with you as the rain can come on suddenly. You will probably want to find somewhere dry to sit it out when it does come. 

With average rainfall of 164.3mm it is a fairly average month when it comes to rain (compared to 105.1mm in January and 331.9mm in December).

Singapore Humidity in May

Relative humidity in May ranges from a minimum average of 63.7% and a maximum average of 95.2% and a 24-hour daily average of 82.3%. This makes it a fairly average month of the year for humidity. 

Note that humidity is generally at its highest in the morning just before sunrise and at its lowest in the mid-afternoon (on days when there is no rain). 

You will notice the humidity rising in the lead up to a thunderstorm and it will drop again following the rain.

What should I pack for Singapore in May?

As you can see from the above statistics, Singapore is hot and humid in May and you should be prepared for thunderstorms in the afternoon. 

We recommend packing lightweight cotton clothing and carrying an umbrella and water bottle with you at all times. Also don’t forget your sunscreen, insect repellent and swimwear for when you want to jump in the pool to cool off. 

Click here for a more comprehensive guide to what to pack for Singapore. 

Candles at Vesak Day temple.

What else should I know about visiting Singapore in May?

Vesak Day usually falls in May (although it will be celebrated on 2nd June in 2023). This is the most significant day of the Buddhist calendar, celebrating the birth, enlightenment and attainment of nirvana of Gautama Buddha.

The Buddhist temples around Singapore will be busy with devotees giving offerings. The day often ends with a candlelit procession, where you can witness the ‘three steps, one bow’ practice.

The Kong Meng San Phor Kark See Monastery on Bright Hill Road is one place where you can witness this.

Before you go… Don’t miss this all this useful information about visiting Singapore:

Click here to read about the Singapore weather in April and June.