March weather forecast
São João, Guinea-Bissau

The first month of the spring, March, is a torrid month in São João, Guinea-Bissau, with an average temperature ranging between max 35.5°C (95.9°F) and min 22.8°C (73°F).

Temperature

In São João, temperatures reach their average annual highs in March, measuring 35.5°C (95.9°F) and a minimum average of 22.8°C (73°F).

Heat index

The average heat index in March is evaluated at a blistering 40°C (104°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. 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 extremely significant for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In March, the average relative humidity in São João is 44%.

Rainfall

March through December are months with rainfall in São João. March is the first month it rains in São João, Guinea-Bissau. Throughout March, in the average 0.7 rainfall days, it receives 1mm (0.04") of precipitation. In São João, during the entire year, the rain falls for 107.5 days and collects up to 726mm (28.58") of precipitation.

Daylight

The average length of the day in March in São João is 12h and 4min.
On the first day of the month, sunrise is at 07:16 and sunset at 19:11. On the last day of March, sunrise is at 06:58 and sunset at 19:12 GMT.

Sunshine

March through May, with an average of 9.9h of sunshine, are months with the most sunshine.

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 São João, Guinea-Bissau. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: In March, the UV index of 7 transforms into the following advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.