April weather forecast
Karaikal, India

April, like March, is a hot pre-monsoon summer month in Karaikal, India, with an average temperature ranging between min 28°C (82.4°F) and max 32.7°C (90.9°F).

Temperature

The introduction of April sees an average high-temperature of a still tropical 32.7°C (90.9°F), hardly deviating from March. With a barely noticeable fluctuation in temperature, Karaikal reaches an average low of 28°C (82.4°F) during the April nights.

Heat index

For most parts of April, the heat index is calculated to be a blisteringly hot 43°C (109.4°F). Prudent: Heat cramps and heat exhaustion are likely. Heatstroke becomes imminent with sustained exertion.
Heat index readings emphasize conditions of light breezes and shaded spots. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Karaikal, the average relative humidity in April is 72%.

Rainfall

In Karaikal, in April, it is raining for 8.8 days, with typically 19mm (0.75") of accumulated precipitation. In Karaikal, during the entire year, the rain falls for 166.7 days and collects up to 891mm (35.08") of precipitation.

Daylight

In April, the average length of the day is 12h and 22min.
On the first day of April in Karaikal, India, sunrise is at 6:07 am and sunset at 6:21 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 6:23 pm IST.

Sunshine

In April, the average sunshine is 10.7h.

UV index

April through June, with an average maximum UV index of 8, are months with the highest UV index. A UV Index of 8 to 10 symbolizes a very high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum daily UV index of 8 during April morphs into the following directions:
Act with urgency in protecting yourself. Without it, skin and eyes can be harmed in no time. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. 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.