April weather forecast
Trincomalee, Sri Lanka

Moving forward from March, April witnesses a drastic modification in Trincomalee's climate. With an average highest temperature of 34.9°C (94.8°F), this month records the warmest days of the year. Captivatingly, the sea temperature closely follows the trend, reaching a high point. However, despite the heat, April sees a substantial rise in rainfall, keeping the weather in check. An apparent enhancement in visibility proves to be a boon for tourists aiming for sightseeing.

Temperature

The month of April, characterized by an average high of 34.9°C (94.8°F) and a low of 23.5°C (74.3°F), is recognized as the warmest in Trincomalee.

Heat index

The heat index value for April is estimated at a blazing hot 52°C (125.6°F). Mindful: Heat cramps and heat exhaustion are to be expected. Extended physical effort might result in heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

In Trincomalee, the average relative humidity in April is 73%.

Rainfall

In Trincomalee, Sri Lanka, during April, the rain falls for 23.6 days and regularly aggregates up to 103mm (4.06") of precipitation. Throughout the year, there are 196.8 rainfall days, and 943mm (37.13") of precipitation is accumulated.

Sea temperature

In Trincomalee, in April, the average water temperature is 29.8°C (85.6°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day in April in Trincomalee is 12h and 19min.
On the first day of April, sunrise is at 06:02 and sunset at 18:15. On the last day of the month, sunrise is at 05:49 and sunset at 18:15 +0530.

Sunshine

The average sunshine in April is 10.1h.

UV index

The months with the highest UV index in Trincomalee are February through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The UV index of 7 during April translates into the following guidance:
Shun overexposure. Protection from sun ravages is indispensable. 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. Experience reduced UV exposure by about half when donning a wide-brim hat. Attention! The combination of sand and water reflections enhances UV ray intensity.