Singapore experiences a tropical climate in
January. The weather is generally warm and humid and there is the likelihood of frequent thunderstorms inherent to this equatorial region. The city witnesses a high relative humidity of 84.7%, culminating in a significant rainfall accumulation of about 243mm (9.57"). The onset of the new year doesn't bring significant changes when compared to the end of the previous year's weather patterns. The overall weather, in combination with the city's vibrant lifestyle, paints an inviting picture for residents and tourists alike.
Temperature
Singapore observes an average high-temperature of a still tropical 30.1°C (86.2°F) in January, barely different from 30°C (86°F) in
December. Singapore's average low-temperature in January is measured at a moderately hot 23.3°C (73.9°F).
Heat index
In January, the heat index is computed to be a very hot 39°C (102.2°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
In January, the average relative humidity in Singapore is 84.7%.
Rainfall
In Singapore, in January, it is raining for 15 days, with typically 243mm (9.57") of accumulated precipitation. In Singapore, during the entire year, the rain falls for 178 days and collects up to 2343mm (92.24") of precipitation.
Sea temperature
The month with the coldest seawater in Singapore is January, with an average sea temperature of 27.7°C (81.9°F).
Note: For any water activity, having surface water temperatures from 25°C (77°F) to 29°C (84.2°F) is considered outstanding and highly delightful for lengthened periods.
Daylight
In January, the average length of the day in Singapore 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 Singapore, sunrise is at 07:15 and sunset at 19:19 +08.
Sunshine
The average sunshine in January is 5.6h.
UV index
The months with the highest UV index in Singapore are January through
May,
August through December, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme health hazard from unsafe exposure to UV radiation for the average person.
Note: An average UV index of 12 in January transforms into this advice:
Put into effect every essential safeguard, as unprotected skin and eyes might burn instantly. 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. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Even on overcast days, ensure the application and frequent reapplication of sunscreen with at least an SPF 30, especially post swim or outdoor exercise. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.