April weather forecast
Saint Louis, Senegal

April in Saint Louis introduces an uptick in weather activity, with temperatures and humidity on the rise and zero rainfall. The temperature range for month floats around 31.7°C (89.1°F) (high) and 18°C (64.4°F) (low), indicating warmer days and nights. The city's sea temperatures climb to a seasonal high of 20.2°C (68.4°F), perfect for swimming and snorkeling. Additionally, the humidity levels creep up to 65%, hinting at the onset of the wet season just around the corner. Despite the increasing heat and humidity, the city brims with vitality as daylight hours push to a splendid 12.5 hours, facilitating longer periods for sightseeing and activities.

Temperature

The beginning of April in Saint Louis reveals an average high-temperature of a still tropical 31.7°C (89.1°F), showing minimal deviation from the previous month. April witnesses a substantial contrast between the daytime highs and the average low of 18°C (64.4°F).

Heat index

The heat index in April is computed to be a fiery hot 38°C (100.4°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
Given the heat index, its values are aligned with shaded sites and gentle winds. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In April, the average relative humidity is 65%.

Rainfall

April is the only month when rain does not fall.

Sea temperature

In April, the average sea temperature in Saint Louis is 20.2°C (68.4°F).
Note: Swimming in 20.2°C (68.4°F) is not a pleasurable activity for the majority of people. Breathing becomes increasingly challenging as water temperature descends from 21°C (69.8°F) to 15°C (59°F).

Daylight

In April, the average length of the day is 12h and 31min.
On the first day of April in Saint Louis, sunrise is at 07:00 and sunset at 19:18. On the last day of the month, sunrise is at 06:41 and sunset at 19:24 GMT.

Sunshine

With an average of 9.5h of sunshine, April has the most sunshine of the year.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Saint Louis, Senegal. A UV Index reading of 11, and higher, represents an extreme threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 12 during April translates into these guidelines:
Undertake all key precautions, as unprotected skin and eyes may get burns in no time. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Apply generously and frequently a broad-spectrum SPF 30+ sunscreen every two hours, or immediately after swimming or any outdoor exercise.