May weather forecast
Brazzaville, Congo

May, the last month of the autumn in Brazzaville, is another hot month, with an average temperature fluctuating between 30.8°C (87.4°F) and 22.1°C (71.8°F).

Temperature

In Brazzaville, the average high-temperature in May is relatively the same as in April - a still tropical 30.8°C (87.4°F). In Brazzaville, Congo, in May, the average low-temperature is 22.1°C (71.8°F).

Heat index

The average heat index in May is appraised at a scorching 40°C (104°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, differences in body mass, height, and shape, wind, and pregnancy affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index 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 is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In May, the average relative humidity in Brazzaville is 79%.

Rainfall

In Brazzaville, during May, the rain falls for 23.6 days and regularly aggregates up to 101mm (3.98") of precipitation. In Brazzaville, during the entire year, the rain falls for 243.1 days and collects up to 1109mm (43.66") of precipitation.

Daylight

The average length of the day in May in Brazzaville is 11h and 55min.
On the first day of May in Brazzaville, sunrise is at 05:57 and sunset at 17:55. On the last day of the month, sunrise is at 05:59 and sunset at 17:53 WAT.

Sunshine

In May, the average sunshine is 8.3h.

UV index

January, March through May, July through September, with an average maximum UV index of 7, are months with the highest UV index in Brazzaville. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 7 in May interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.