May weather forecast
Changi, Singapore

The zenith of the summer season, May, ushers in the maximum temperature of the year swinging from 26.7°C (80.1°F) to 31.8°C (89.2°F). Maintain hydration and use sun protection as the UV index remains constantly high. Skies clear up more, and the winds slow down considerably, creating a tranquil atmosphere. Due to warmer temperatures, hydration and sun-protection become critical. The extensive sunshine and clear skies invigorate an enthusiastic note to the festivities of Changi.

Temperature

With its high average temperature of 31.8°C (89.2°F) and a low of 26.7°C (80.1°F), May is regarded as the warmest month.

Heat index

In May, the average heat index is evaluated at a blistering 42°C (107.6°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Keep in mind the heat index values are meant for areas in shade and with light wind. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

In May, the average relative humidity in Changi is 76%.

Rainfall

In Changi, during May, the rain falls for 26.7 days and regularly aggregates up to 136mm (5.35") of precipitation. In Changi, during the entire year, the rain falls for 309.5 days and collects up to 1577mm (62.09") of precipitation.

Daylight

The average length of the day in May is 12h and 11min.
On the first day of May in Changi, Singapore, sunrise is at 06:56 and sunset at 19:06. On the last day of the month, sunrise is at 06:55 and sunset at 19:07 +08.

Sunshine

In Changi, the average sunshine in May is 8.6h.

UV index

The months with the highest UV index in Changi are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Changi, Singapore, are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 7 during May translates into the following directions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.