Colombo
Sri Lanka
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Colombo, Sri Lanka

Statues on the Seema Malaka Temple in Colombo, Sri Lanka, overlooking the Beira Lake, and a view of the tall buildings of Colombo
Statues on the Seema Malaka Temple in Colombo, Sri Lanka, overlooking the Beira Lake, and a view of the tall buildings of Colombo
Marzo, the first month of the spring, in Colombo, is still a hot month, with average temperature ranging between min 23.7°C (74.7°F) and max 31.7°C (89.1°F).

Temperature

In Colombo, the average high-temperature in Marzo is relatively the same as in Febrero - a still tropical 31.7°C (89.1°F). The average low-temperature, in Colombo, is 23.7°C (74.7°F).

Heat index

The average heat index is calculated to a torrid 39.9°C (103.8°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, wind, differences in body mass, height, and shape), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in Colombo is 71%.

Rainfall

In Colombo, during 9 rainfall days, 128mm (5.04") of precipitation is typically accumulated. In Colombo, during the entire year, the rain falls for 145 days and collects up to 2523.7mm (99.36") of precipitation.

Sea temperature

In Marzo, the average sea temperature is 29.1°C (84.4°F).
Note: 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.

Daylight

In Colombo, the average length of the day is 12.1h.

Sunshine

The month with the most sunshine is Marzo, with an average of 8.9h of sunshine.

UV index

Months with the highest UV index in Colombo are Febrero through Octubre, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 12 in Marzo transform into the following instructions:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in Marzo in Colombo?

In Marzo, in Colombo, the average high-temperature is 31.7°C (89.1°F), and the average low-temperature is 23.7°C (74.7°F). The average heat index (a.k.a. 'feels like', 'real feel'), that factores the actual air temperature with the relative humidity, in Marzo is evaluated at 39.9°C (103.8°F).

What is the average humidity in Marzo in Colombo?

In Colombo, the average relative humidity in Marzo is 71%.

How much does it rain in Colombo in Marzo?

In Marzo, in Colombo, Sri Lanka, the rain falls for 9 days. Throughout Marzo, 128mm (5.04") of precipitation is accumulated.

How warm is the water in Marzo in Colombo?

In Colombo, Sri Lanka, the average seawater temperature in Marzo is 29.1°C (84.4°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Colombo have in Marzo?

In Marzo, the average length of the day in Colombo is 12.1h.

What month has the most sunshine in Colombo?

With an average of 8.9h of sunshine, Marzo has the most sunshine of the year in Colombo.

How long on average sun shines in Marzo in Colombo?

The average sunshine in Marzo in Colombo, Sri Lanka, is 8.9h.

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

Febrero through Octubre, with an average maximum UV index of 12, are months with the highest UV index in Colombo, Sri Lanka.

What is the UV index intensity in Marzo in Colombo?

In Marzo, the average daily maximum UV index is 12. A UV Index estimate of 11, and higher, represents an extreme health threat from the exposure to the Sun's UV rays.
Average temperature in March - Colombo, Sri Lanka
  • Average high temperature in March: 31.7°C

The warmest month (with the highest average high temperature) is April (31.8°C).
Months with the lowest average high temperature are July, August and October (30°C).

  • Average low temperature in March: 23.7°C

Months with the highest average low temperature are May and June (25.5°C).
The coldest month (with the lowest average low temperature) is January (22.3°C).

Average humidity in March - Colombo, Sri Lanka
  • Average humidity in March: 71%

The month with the highest relative humidity is June (79%).
Months with the lowest relative humidity are January and February (69%).

Average rainfall in March - Colombo, Sri Lanka
  • Average rainfall in March: 128mm

The wettest month (with the highest rainfall) is November (414.4mm).
The driest month (with the lowest rainfall) is January (58.2mm).

Average rainfall days in March - Colombo, Sri Lanka
  • Average rainfall days in March: 9 days

The month with the highest number of rainy days is October (17 days).
Months with the lowest number of rainy days are January and February (5 days).

Average sea temperature in March - Colombo, Sri Lanka
  • Average sea temperature in March: 29.1°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).

Average daylight in March / Average sunshine in March - Colombo, Sri Lanka
  • Average daylight in March: 12.1h

Months with the longest days are June and July (Average daylight: 12.5h).
The month with shortest days is December (Average daylight: 11.7h).

  • Average sunshine in March: 8.9h

The month with most sunshine is March (Average sunshine: 8.9h).
The month with least sunshine is September (Average sunshine: 6.3h).

Average UV index in March - Colombo, Sri Lanka
  • Average UV index in March: 12

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
Months with the lowest UV index are January, November and December (UV index 11).