March weather forecast
Galle, Sri Lanka

Moving on to March, temperatures can reach an average high of 30.3°C (86.5°F). It marks the start of a more tropical climate, with an uptick in rainfall, specifically, up to 68mm (2.68"). It is not uncommon to experience increased humidity levels during this period. However, despite this increase, Galle retains its exotic charm with pleasantly warm sea temperatures. While it may not be the driest month, Galle does offer considerable daylight, making tourist activities still possible and enjoyable.

Temperature

During March and April, Galle experiences its warmest period, with an average high-temperature of 30.3°C (86.5°F).

Heat index

For most parts of March, the heat index is appraised at a fiery hot 38°C (100.4°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

The months with the lowest humidity are February and March, with an average relative humidity of 77%.

Rainfall

In Galle, in March, it is raining for 21.3 days, with typically 68mm (2.68") of accumulated precipitation. Throughout the year, there are 286.9 rainfall days, and 1974mm (77.72") of precipitation is accumulated.

Sea temperature

In Galle, the average seawater temperature in March is 29.2°C (84.6°F).
Note: For swimming, diving, and similar activities, the water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered delightful, allowing for extended periods of enjoyment without discomfort.

Daylight

The average length of the day in March is 12h and 5min.
On the first day of the month, sunrise is at 06:21 and sunset at 18:21. On the last day of March, sunrise is at 06:07 and sunset at 18:18 +0530.

Sunshine

In March, the average sunshine is 9.1h.

UV index

The months with the highest UV index are January through April, June through August, October through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 7 in March translates into the following instructions:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Caution! The Sun's UV rays become stronger due to reflections from water and sand.