April weather forecast
Isabel, Philippines

April in Isabel, Philippines, is a tropical spring month, with an average temperature ranging between min 25°C (77°F) and max 30.3°C (86.5°F).

Temperature

The arrival of April coincides with an average high-temperature of a tropical 30.3°C (86.5°F), indicating a minimal shift from March's 29.3°C (84.7°F). In Isabel, April nights witness a steady temperature drop to a moderately hot 25°C (77°F).

Heat index

The average heat index in April is evaluated at a fiery hot 38°C (100.4°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Note that heat index values are valued for light wind and location in the shade. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In April, the average relative humidity is 78%.

Rainfall

The month with the least rainfall is April, when the rain falls for 17.1 days and typically collects 31mm (1.22") of precipitation.

Sea temperature

In April, the average sea temperature in Isabel is 27.9°C (82.2°F).
Note: Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is recognized as warm and pleasant by all, making water activities comfortable and delightful for long durations.

Daylight

In April, the average length of the day in Isabel, Philippines, is 12h and 22min.
On the first day of the month, sunrise is at 5:38 am and sunset at 5:53 pm. On the last day of April, sunrise is at 5:24 am and sunset at 5:54 pm PST.

Sunshine

In Isabel, the average sunshine in April is 8.7h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Isabel. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index of 7 during April translates into these guidelines:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Alert! Sand and water increase UV exposure due to their reflective properties.