January weather forecast
Seletar, Singapore

Seletar, Singapore, offers warm, tropical weather in January featuring high humidity and scattered rains throughout the month. Temperatures tend to stay between 24.6°C (76.3°F) and 29.7°C (85.5°F) providing conducive weather for a daytime tour around the city. However, expect the rain to serve as a spontaneous break with an average of almost 20 days of the month featuring rain. Despite the rainfall, there is abundant daylight, making it perfect for those who enjoy mild indoor activities. A light jacket might come in handy given the mild breeze in the city during this period.

Temperature

With its high average temperature of 29.7°C (85.5°F) and a low of 24.6°C (76.3°F), January is regarded as the coldest month.

Heat index

For most parts of January, the heat index is evaluated at a sweltering 37°C (98.6°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In January, the average relative humidity is 81%.

Rainfall

In Seletar, in January, during 19.9 rainfall days, 59mm (2.32") of precipitation is typically accumulated. In Seletar, Singapore, during the entire year, the rain falls for 250.9 days and collects up to 733mm (28.86") of precipitation.

Daylight

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

Sunshine

The average sunshine in January is 7.3h.

UV index

January through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 7 during January translates into these guidelines:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.