May weather forecast
Libreville, Gabon

The characteristic tropical charm of Libreville peaks in May, notwithstanding a drop in sea temperatures. Compared to the preceding months, May sees a significant decline in rainfall, heralding the dawn of the dry season. In comparison to April, the velocity of the wind increases making the city feel cooler. Despite the unchanging hours of daylight, sunshine takes a dip influenced by the scattered cloud cover. The atmospheric pressure remains relatively constant, ensuring consistent weather patterns.

Temperature

Libreville's shift into May is marked by a subtle change to a still warm 28.9°C (84°F) from April's 29.8°C (85.6°F) in temperature. Libreville, in May, logs an average low-temperature of 24.7°C (76.5°F), a subtle step down from daytime readings.

Heat index

The heat index value for May is calculated to be a sweltering 36°C (96.8°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In May, the average relative humidity in Libreville is 85%.

Rainfall

In May, the rain falls for 25.8 days. Throughout May, 156mm (6.14") of precipitation is accumulated. In Libreville, during the entire year, the rain falls for 274.1 days and collects up to 1477mm (58.15") of precipitation.

Sea temperature

In Libreville, in May, the average water temperature is 27.6°C (81.7°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In May, the average length of the day in Libreville, Gabon, is 12h and 8min.
On the first day of the month, sunrise is at 06:15 and sunset at 18:23. On the last day of May, sunrise is at 06:15 and sunset at 18:24 WAT.

Sunshine

In May, the average sunshine in Libreville is 7.2h.

UV index

January through May, November and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 7 during May leads to these advisories:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Note! Reflective surfaces like sand and water heighten the UV radiation levels.