January 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 January

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.
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Frequently asked questions

How hot is it in Singapore in January?

The average high-temperature, in January, in Singapore, is 30.1°C (86.2°F), while the average low-temperature is 23.3°C (73.9°F). In January, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 39°C (102.2°F).

What is the average humidity in January in Singapore?

In January, the average relative humidity is 84.7%.

How many days does it rain in January in Singapore?

In Singapore, Singapore, in January, during 15 rainfall days, 243mm (9.57") of precipitation is typically accumulated.

When is the sea coldest in Singapore?

With an average sea temperature of 27.7°C (81.9°F), January is the month with the coldest seawater.

How warm is the water in January in Singapore?

In Singapore, Singapore, in January, the average water temperature is 27.7°C (81.9°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

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

In Singapore, Singapore, the average day length in January is 12h and 3min.

When is the sunrise / sunset in January in Singapore?

In January, on the first day of the month, sunrise is at 07:06 and sunset at 19:09. On the last day of the month, in Singapore, Singapore, sunrise is at 07:15 and sunset at 19:19 +08.

How long on average sun shines in January in Singapore?

In January, the average sunshine duration in Singapore is 5.6h.

What is the month with the highest UV index in Singapore?

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

How high is the UV index in January in Singapore?

The average daily maximum UV index in January in Singapore, Singapore, is 12. A UV Index reading of 11, and higher, represents an excessive health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in January
Singapore, Singapore

Average temperature in January - Singapore, Singapore
  • Average high temperature in January: 30.1°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 January: 23.3°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 January
Singapore, Singapore

Average humidity in January - Singapore, Singapore
  • Average humidity in January: 84.7%

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 January
Singapore, Singapore

Average rainfall in January - Singapore, Singapore
  • Average rainfall in January: 243.2mm

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 January
Singapore, Singapore

Average rainfall days in January - Singapore, Singapore
  • Average rainfall days in January: 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 January
Singapore, Singapore

Average sea temperature in January - Singapore, Singapore
  • Average sea temperature in January: 27.7°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 January /
Average sunshine in January
Singapore, Singapore

Average daylight in January / Average sunshine in January - Singapore, Singapore
  • Average daylight in January: 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 January: 5h and 4min

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 January
Singapore, Singapore

Average UV index in January - Singapore, Singapore
  • Average UV index in January: 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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