May weather forecast
Cacheu, Guinea-Bissau

May emerges as the first month to profoundly demonstrate the impact of the rainy season in Cacheu. With a record average rainfall of 199mm (7.83"), the highest for the year, the city witnesses its wettest month. The urban scenery transforms significantly with more clouds accumulating in the sky, and increased rainfall brings about an apparent peak in humidity. Meanwhile, the heat does not skimp, with consistently high temperatures throughout the month. This influx of rainfall adds to the city's tropical charm and wealth of greenery.

Temperature

The introduction of May notes a subtle temperature variation to a still very hot 35.3°C (95.5°F) from April's 36.7°C (98.1°F). May brings an average low-temperature of 23.8°C (74.8°F) to Cacheu.

Heat index

The heat index value during May is computed to be a blisteringly hot 44°C (111.2°F). Take note: Heat exhaustion and heat cramps are expected. Heatstroke can occur with prolonged effort.
Take into consideration that the heat index values are calculated for shade and light wind conditions. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

In May, the average relative humidity in Cacheu, Guinea-Bissau, is 56%.

Rainfall

In May, the rain falls for 4 days. Throughout May, 11mm (0.43") of precipitation is accumulated. In Cacheu, during the entire year, the rain falls for 103.1 days and collects up to 677mm (26.65") of precipitation.

Sea temperature

In May, the average sea temperature in Cacheu is 25.8°C (78.4°F).
Note: Swimming, diving, and similar water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as very agreeable and pleasurable for lengthy periods without discomfort.

Daylight

In Cacheu, the average length of the day in May is 12h and 42min.
On the first day of May in Cacheu, sunrise is at 06:44 and sunset at 19:18. On the last day of the month, sunrise is at 06:38 and sunset at 19:26 GMT.

Sunshine

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

UV index

The months with the highest UV index in Cacheu are January through June, September through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: A maximum UV index of 7 in May translates into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Stay vigilant! UV rays get a boost in intensity due to sand and water reflections.