January weather forecast
Boon Lay, Singapore

The weather in January at Boon Lay, Singapore, is generally overcast with high levels of humidity. This month experiences more rain than the ensuing period, with an average monthly rainfall of 165mm (6.5"). The constant rainfall casts a cool aura around the city, with minimal variance in the high and low temperatures. Winds in January are at a comfortable speed, producing a perfect balance to the humidity. The month’s long daylight hours ensure that residents have ample time to enjoy outdoor activities between showers.

Temperature

January and December in Boon Lay are characterised by lowest temperatures, with an average high of 29.5°C (85.1°F).

Heat index

The average heat index in January is evaluated at a very hot 36°C (96.8°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In Boon Lay, the average relative humidity in January is 80%.

Rainfall

In Boon Lay, during January, the rain falls for 27.4 days and regularly aggregates up to 165mm (6.5") of precipitation. Throughout the year, in Boon Lay, there are 327.3 rainfall days, and 1631mm (64.21") of precipitation is accumulated.

Daylight

The average length of the day in January is 12h and 3min.
On the first day of January, sunrise is at 07:06 and sunset at 19:09. On the last day of the month, sunrise is at 07:16 and sunset at 19:20 +08.

Sunshine

The average sunshine in January in Boon Lay is 7.6h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Boon Lay, Singapore. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 7 in January interprets into the following advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.