May weather forecast
Singapore, Singapore

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The colorful night skyline of Singapore city in Singapore
The colorful night skyline of Singapore city in Singapore

Weather in May

May introduces slight variations in Singapore's weather compared to the preceding month of April. Remarkably, the average sea temperature peaks to a warm 30.2°C (86.4°F) - the highest annual sea temperature occurs in this month. Daylight hours extend marginally, enabling residents and tourists to make the most of the daylight. While the city-state continues its cycle of warm days and mild nights, sudden thunderstorms may occur as a result of the high humidity. Retaining most of April's climatic features, May in Singapore is synonymous with consistent tropical weather conditions.

Temperature

May begins with an average high-temperature of a still tropical 31.6°C (88.9°F), reflecting close similarity to the preceding month. Throughout May, Singapore records an average temperature of 24.8°C (76.6°F) at night.

Heat index

For most parts of May, the heat index is computed to be a burning hot 45°C (113°F). Warning: Heat cramps and heat exhaustion are anticipated. Heatstroke is a risk with ongoing activity.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In Singapore, Singapore, the average relative humidity in May is 84.4%.

Rainfall

In May, in Singapore, the rain falls for 15 days. Throughout May, 171mm (6.73") of precipitation is accumulated. In Singapore, Singapore, during the entire year, the rain falls for 178 days and collects up to 2343mm (92.24") of precipitation.

Sea temperature

The months with the warmest seawater in Singapore are May and June, with an average sea temperature of 30.2°C (86.4°F).
Note: Cooling down in waters with temperatures over 30°C (86°F) might not feel as satisfying.

Daylight

The average length of the day in May is 12h and 11min.
On the first day of May in Singapore, sunrise is at 06:56 and sunset at 19:06. On the last day of the month, sunrise is at 06:56 and sunset at 19:08 +08.

Sunshine

In May, the average sunshine in Singapore, Singapore, is 5.8h.

UV index

January through May, August through December, with an average maximum UV index of 12, are months with the highest UV index in Singapore. A UV Index value of 11, and more, symbolizes an excessive health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum daily UV index of 12 during May morphs into the following directions:
Employ all critical precautions. Guarding against sun damage is essential. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. During bright days, sunglasses that offer UVA and UVB defense are recommended. Even on overcast days, apply and frequently reapply a sunscreen with SPF 30 or more, specifically after a swim or outdoor workout. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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Frequently asked questions

How hot is May in Singapore?

In Singapore, in May, the average high-temperature is 31.6°C (88.9°F), and the average low-temperature is 24.8°C (76.6°F). In May, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is computed to be 45°C (113°F).

What is the average humidity in May in Singapore?

In Singapore, the average relative humidity in May is 84.4%.

How many days does it rain in May in Singapore?

In Singapore, Singapore, in May, it is raining for 15 days, with typically 171mm (6.73") of accumulated precipitation.

What months are the sea warmest in Singapore?

May and June, with an average sea temperature of 30.2°C (86.4°F), are months with the warmest seawater in Singapore, Singapore.

How warm is the water in May in Singapore?

In Singapore, Singapore, in May, the average water temperature is 30.2°C (86.4°F). For swimming, other intense water activities, temperature above 30°C (86°F) is arguably unpleasant, as the water cooling effect is missing.

What is the average length of the day in May in Singapore?

The average day length in May in Singapore is 12h and 11min.

When is the sunrise / sunset in May in Singapore?

On the first day of May in Singapore, Singapore, sunrise is at 06:56 and sunset at 19:06. On the last day of the month, sunrise is at 06:56 and sunset at 19:08 +08.

How long on average sun shines in May in Singapore?

The average sunshine duration in May in Singapore is 5.8h.

When is the highest UV index in Singapore?

The months with the highest UV index in Singapore, Singapore, are January through May, August through December, with an average maximum UV index of 12.

How high is the UV index in May in Singapore?

In May, the average daily maximum UV index in Singapore is 12. A UV Index value of 11, and more, symbolizes an excessive health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in May
Singapore, Singapore

Average temperature in May - Singapore, Singapore
  • Average high temperature in May: 31.6°C

The warmest month (with the highest average high temperature) is April (31.7°C).
The month with the lowest average high temperature is December (30°C).

  • Average low temperature in May: 24.8°C

The months with the highest average low temperature are May and June (24.8°C).
The coldest month (with the lowest average low temperature) is January (23.3°C).

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Average humidity in May
Singapore, Singapore

Average humidity in May - Singapore, Singapore
  • Average humidity in May: 84.4%

The month with the highest relative humidity is December (86.9%).
The months with the lowest relative humidity are February and July (82.8%).

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Average rainfall in May
Singapore, Singapore

Average rainfall in May - Singapore, Singapore
  • Average rainfall in May: 171.3mm

The wettest month (with the highest rainfall) is December (287.4mm).
The driest month (with the least rainfall) is July (158.7mm).

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Average rainfall days in May
Singapore, Singapore

Average rainfall days in May - Singapore, Singapore
  • Average rainfall days in May: 15 days

The months with the highest number of rainy days are November and December (19 days).
The month with the least rainy days is February (11 days).

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Average sea temperature in May
Singapore, Singapore

Average sea temperature in May - Singapore, Singapore
  • Average sea temperature in May: 30.2°C

The best months for swimming (with the highest average sea temperature) are May and June (30.2°C).
The coldest month (with the lowest average sea temperature) is January (27.7°C).

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Average daylight in May /
Average sunshine in May
Singapore, Singapore

Average daylight in May / Average sunshine in May - Singapore, Singapore
  • Average daylight in May: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 12min).
The month with the shortest days is December (Average daylight: 12h and 0min).

  • Average sunshine in May: 5h and 5min

The month with the most sunshine is February (Average sunshine: 6h and 30min).
The months with the least sunshine are November and December (Average sunshine: 4h and 18min).

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Average UV index in May
Singapore, Singapore

Average UV index in May - Singapore, Singapore
  • Average UV index in May: 12

The months with the highest UV index are January, February, March, April, May, August, September, October, November and December (UV index 12).
The months with the lowest UV index are June and July (UV index 11).

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Singapore, Singapore

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