April sees
Mayumba basking in the peak of the warm season, with balmy mornings transitioning to comfortable evenings. The highest average temperature touches a warm 30.5°C (86.9°F) in April, making it the most heated month of the year. Alongside hiking and bird watching, the month is perfect for beach outings, with the ocean temperature rendering the water pleasantly tepid. A stark contrast from
March is noticed in the drastic decrease in April's rainfall, signalling the onset of the dry season. The stretch of sunny days coupled with lower humidity, makes this month suitable for outdoor activities.
Temperature
April is the warmest month in Mayumba, with the temperature often reaching an average high of 30.5°C (86.9°F) and an average low of 23.6°C (74.5°F).
Heat index
For most parts of April, the heat index is evaluated at a scorching 41°C (105.8°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. 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 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.
Humidity
The average relative humidity in April is 86%.
Rainfall
In April, in Mayumba, the rain falls for 10.2 days. Throughout April, 126mm (4.96") of precipitation is accumulated. In Mayumba, during the entire year, the rain falls for 124.6 days and collects up to 1673mm (65.87") of precipitation.
Sea temperature
In Mayumba, the average seawater temperature in April is 28°C (82.4°F).
Note: For swimming, diving, or other water activities, the temperature range of 25°C (77°F) to 29°C (84.2°F) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.
Daylight
In Mayumba, the average length of the day in April is 12h and 2min.
On the first day of the month, sunrise is at 06:18 and sunset at 18:23. On the last day of April, in Mayumba, sunrise is at 06:14 and sunset at 18:14 WAT.
Sunshine
The months with the most sunshine in Mayumba,
Gabon, are
January through April, with an average of 5h of sunshine.
UV index
The months with the highest UV index are January through April,
August through
December, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In April, the maximum UV index of 12 translates into these guidelines:
Undertake all critical precautions. Protection from sun harm is vital. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Even on a cloudy day, a sunscreen with at least a 30 SPF should be applied generously and frequently reapplied, including after a swim or outdoor exercise. Caution! The Sun's UV intensity grows with reflections off sand and water.