May weather forecast
Cafia, Guinea-Bissau

The last month of the spring, May, is also a blistering month in Cafia, Guinea-Bissau, with temperature in the range of an average low of 23.8°C (74.8°F) and an average high of 41.3°C (106.3°F).

Temperature

With the onset of May, a modest change to a still blisteringly hot 41.3°C (106.3°F) from April's 42.1°C (107.8°F) is noted in high-temperature. A striking difference from the daytime highs is registered during May nights in Cafia, with an average temperature of 23.8°C (74.8°F).

Heat index

The heat index for May is calculated to be a blazing hot 54°C (129.2°F). Beware: Heat exhaustion along with heat cramps are on the cards. Heatstroke could result from sustained physical activity.
Heat index determinations are made taking into account the shade and light air movements. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In May, the average relative humidity is 43%.

Rainfall

In May, the rain falls for 3.3 days. Throughout May, 5mm (0.2") of precipitation is accumulated. Throughout the year, there are 107.6 rainfall days, and 593mm (23.35") of precipitation is accumulated.

Daylight

The average length of the day in May is 12h and 41min.
On the first day of the month, sunrise is at 06:39 and sunset at 19:13. On the last day of May, sunrise is at 06:33 and sunset at 19:20 GMT.

Sunshine

In Cafia, the average sunshine in May is 9.8h.

UV index

March through May, 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 vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high UV index of 8 in May translates into the following recommendations:
Take the necessary steps to protect yourself; unprotected skin and eyes are vulnerable to damage. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.