March weather forecast
Kalutara, Sri Lanka

This mid-season month of March comes with subtle weather variations. Compared to February, the region observes an increase in temperature, introducing warmer days. The maximum temperature reaches an average of 31.3°C (88.3°F), making the region hotter. Accompanying this warmth, a palpable increase in rainfall begins, preparing for the arrival of the rainy season. However, outdoor enthusiasts could still indulge in coastal activities as the rainfall doesn’t reach extreme levels yet.

Temperature

Kalutara's temperature peaks during March and April, with an average high-temperature of 31.3°C (88.3°F).

Heat index

March's average heat index is evaluated at an extremely hot 41°C (105.8°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
The heat index's values are generally associated with conditions in shade and light breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

The average relative humidity in March is 77%.

Rainfall

In Kalutara, during March, the rain falls for 19.9 days and regularly aggregates up to 61mm (2.4") of precipitation. In Kalutara, during the entire year, the rain falls for 273.8 days and collects up to 2059mm (81.06") of precipitation.

Sea temperature

In Kalutara, in March, the average water temperature is 29.1°C (84.4°F).
Note: Engaging in swimming, diving, or other water activities is highly enjoyable in temperatures ranging from 25°C (77°F) to 29°C (84.2°F), without any unpleasant sensations for prolonged durations.

Daylight

In Kalutara, the average length of the day in March is 12h and 5min.
On the first day of March, sunrise is at 06:22 and sunset at 18:22. On the last day of the month, sunrise is at 06:08 and sunset at 18:19 +0530.

Sunshine

The average sunshine in March is 9h.

UV index

January through April, July, September through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index, 7 during March, leads to the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Caution! Sand and water reflections can notably increase the UV radiation intensity.