April weather forecast
Galle, Sri Lanka

April sees more rain showers in Galle than in the preceding months. The city is now fully enveloped in its tropical character, defined by frequent showers and continuous humidity. Despite torrential downpours, locals and tourists alike find the city's climate bearable, thanks to the lingering sea breezes, which lessen the perceived temperature. Residents of Galle can anticipate an average temperature high of 30.3°C (86.5°F) in April. Sea temperatures are at their warmest, making coastal activities preferable.

Temperature

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

Heat index

The heat index value during April is appraised at a torrid 38°C (100.4°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In April, the average relative humidity is 78%.

Rainfall

In Galle, during April, the rain falls for 26.2 days and regularly aggregates up to 134mm (5.28") of precipitation. Throughout the year, there are 286.9 rainfall days, and 1974mm (77.72") of precipitation is accumulated.

Sea temperature

April is the month with the warmest seawater, with an average sea temperature of 29.6°C (85.3°F).
Note: For any water activity, the surface water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are deemed excellent and incredibly pleasant for longer durations.

Daylight

The average length of the day in April is 12h and 16min.
On the first day of April, sunrise is at 06:07 and sunset at 18:18. On the last day of the month, sunrise is at 05:56 and sunset at 18:16 +0530.

Sunshine

The month with the most sunshine is April, with an average of 9.3h of sunshine.

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 risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 7 during April leads to these advisories:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take note! Sand and water reflections strengthen the Sun's UV exposure.