January weather forecast
Colombo, Sri Lanka

englishespañol中文
Share
Statues on the Seema Malaka Temple in Colombo, Sri Lanka, overlooking the Beira Lake
Statues on the Seema Malaka Temple in Colombo, Sri Lanka, overlooking the Beira Lake

Weather in January

January in Colombo, Sri Lanka, provides a mixture of both pleasant and challenging climatic conditions. Temperature highs peak at 30.8°C (87.4°F) during the daytime, with a slight cooling at nights to about 23.1°C (73.6°F). Although temperatures are typically comfortable, a high level of humidity at 74% leads to wet conditions. Travelers need to be prepared with suitable clothing and gear as rainfall of 40mm (1.57") spread over 11.6 days occurs during this period. Despite the rains, a significant amount of daylight remains providing plenty of opportunities for exploration and leisure activities.

Temperature

Colombo's average high-temperature in January sits at a hot 30.8°C (87.4°F), showing little difference from the previous month. In Colombo, the average nighttime temperature during January is a warm 23.1°C (73.6°F).

Heat index

The heat index value during January is computed to be a sweltering 38°C (100.4°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. 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 human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

January and February, with an average relative humidity of 74%, are the least humid months in Colombo.

Rainfall

The month with the least rainfall in Colombo is January, when the rain falls for 11.6 days and typically collects 40mm (1.57") of precipitation.

Sea temperature

In Colombo, in January, the average water temperature is 27.7°C (81.9°F).
Note: Water activities in surface temperatures between 25°C (77°F) and 29°C (84.2°F) are seen as exceptional and extremely agreeable for lengthened time spans.

Daylight

The average length of the day in January is 11h and 46min.
On the first day of January, sunrise is at 06:21 and sunset at 18:05. On the last day of the month, sunrise is at 06:29 and sunset at 18:18 +0530.

Sunshine

The month with the most sunshine is January, with an average of 9.1h of sunshine.

UV index

January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Colombo. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A maximum high daily UV index of 7 during January translates into the following directions:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Boost your sun resistance with garments that are densely woven yet spacious. Take heed! Reflections of sand and water make the Sun's UV rays stronger.
[Resources]

Frequently asked questions

How hot is it in Colombo in January?

January temperatures in Colombo vary between a high-temperature of 30.8°C (87.4°F) and a low-temperature of 23.1°C (73.6°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in January is computed to be 38°C (100.4°F).

What is the least humid month in Colombo?

The months with the lowest humidity in Colombo are January and February, with an average relative humidity of 74%.

What is the average humidity in January in Colombo?

In January, the average relative humidity is 74%.

What is the driest month in Colombo?

January is the month with the least rainfall in Colombo. Rain falls for 11.6 days and accumulates 40mm (1.57") of precipitation.

How many days does it rain in January in Colombo?

In Colombo, in January, during 11.6 rainfall days, 40mm (1.57") of precipitation is typically accumulated.

What is the sea water temperature in January in Colombo?

In Colombo, the average seawater temperature in January is 27.7°C (81.9°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Colombo have in January?

The average day length in January in Colombo, Sri Lanka, is 11h and 46min.

When are sunrise and sunset in January in Colombo?

In January, on the first day of the month, sunrise is at 06:21 and sunset at 18:05. On the last day of the month, in Colombo, sunrise is at 06:29 and sunset at 18:18 +0530.

What month has the most sunshine in Colombo?

The month with the most sunshine is January, with an average of 9.1h of sunshine.

How long on average sun shines in January in Colombo?

In January, the average sunshine duration in Colombo, Sri Lanka, is 9.1h.

What are the months with the highest UV index in Colombo?

January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Colombo.

What is the UV index intensity in January in Colombo?

The average daily maximum UV index in January in Colombo is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.

Average temperature in January
Colombo, Sri Lanka

Average temperature in January - Colombo, Sri Lanka
  • Average high temperature in January: 30.8°C

The warmest months (with the highest average high temperature) are March and April (31.8°C).
The months with the lowest average high temperature are July and August (28.9°C).

  • Average low temperature in January: 23.1°C

The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is January (23.1°C).

[Resources]

Average pressure in January
Colombo, Sri Lanka

Average pressure in January - Colombo, Sri Lanka
  • Average pressure in January: 1011.6mbar

The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).

[Resources]

Average wind speed in January
Colombo, Sri Lanka

Average wind speed in January - Colombo, Sri Lanka
  • Average wind speed in January: 12.8km/h

The windiest month (with the highest average wind speed) is June (15.1km/h).
The calmest month (with the lowest average wind speed) is March (8km/h).

[Resources]

Average humidity in January
Colombo, Sri Lanka

Average humidity in January - Colombo, Sri Lanka
  • Average humidity in January: 74%

The months with the highest relative humidity are June, July and August (83%).
The months with the lowest relative humidity are January and February (74%).

[Resources]

Average rainfall in January
Colombo, Sri Lanka

Average rainfall in January - Colombo, Sri Lanka
  • Average rainfall in January: 40mm

The wettest month (with the highest rainfall) is June (341mm).
The driest month (with the least rainfall) is January (40mm).

[Resources]

Average rainfall days in January
Colombo, Sri Lanka

Average rainfall days in January - Colombo, Sri Lanka
  • Average rainfall days in January: 11.6 days

The month with the highest number of rainy days is August (30.2 days).
The month with the least rainy days is January (11.6 days).

[Resources]

Average sea temperature in January
Colombo, Sri Lanka

Average sea temperature in January - Colombo, Sri Lanka
  • Average sea temperature in January: 27.7°C

The best month for swimming (with the highest average sea temperature) is April (29.6°C).
The coldest month (with the lowest average sea temperature) is August (27.2°C).

[Resources]

Average daylight in January /
Average sunshine in January
Colombo, Sri Lanka

Average daylight in January / Average sunshine in January - Colombo, Sri Lanka
  • Average daylight in January: 11h and 5min

The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).

  • Average sunshine in January: 9h and 1min

The month with the most sunshine is January (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).

[Resources]

Average sunshine days in January
Colombo, Sri Lanka

Average sunshine days in January - Colombo, Sri Lanka
  • Average sunshine days in January: 17.2 days

The month with the most sunshine days is January (17.2 days).
The months with the least sunshine days are June and August (0.3 days).

[Resources]

Average UV index in January
Colombo, Sri Lanka

Average UV index in January - Colombo, Sri Lanka
  • Average UV index in January: 7

The months with the highest UV index are January, February, March, April, July, September, November and December (UV index 7).
The months with the lowest UV index are May, June, August and October (UV index 6).

[Resources]

Average cloud cover in January
Colombo, Sri Lanka

Average cloud cover in January - Colombo, Sri Lanka
  • Average cloud cover in January: 24

The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 24).

[Resources]

Average visibility in January
Colombo, Sri Lanka

Average visibility in January - Colombo, Sri Lanka
  • Average visibility in January: 10km

The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).

[Resources]

Colombo, Sri Lanka

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location