May weather forecast
Libreville, Gabon

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Tarmac road beside sandy beaches leading into the Libreville city in Gabon
Tarmac road beside sandy beaches leading into the Libreville city in Gabon

Weather in May

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.
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Frequently asked questions

How hot is it in Libreville in May?

In May, in Libreville, the average high-temperature is 28.9°C (84°F), and the average low-temperature is 24.7°C (76.5°F). In May, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 36°C (96.8°F).

What is the average humidity in May in Libreville?

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

How much does it rain in Libreville in May?

In May, the rain falls for 25.8 days. Throughout May, 156mm (6.14") of precipitation is accumulated.

How warm is the water in May in Libreville?

In May, the average sea temperature in Libreville is 27.6°C (81.7°F). 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.

How many hours of daylight does Libreville have in May?

The average day length in May in Libreville is 12h and 8min.

When are sunrise and sunset in May in Libreville?

In May, on the first day of the month, sunrise is at 06:15 and sunset at 18:23. On the last day of the month, in Libreville, Gabon, sunrise is at 06:15 and sunset at 18:24 WAT.

How long on average sun shines in May in Libreville?

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

When is the highest UV index in Libreville?

January through May, November and December, with an average maximum UV index of 7, are months with the highest UV index in Libreville, Gabon.

How high is the UV index in May in Libreville?

The average daily maximum UV index in May in Libreville is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.

Average temperature in May
Libreville, Gabon

Average temperature in May - Libreville, Gabon
  • Average high temperature in May: 28.9°C

The warmest month (with the highest average high temperature) is March (30.1°C).
The month with the lowest average high temperature is July (26.5°C).

  • Average low temperature in May: 24.7°C

The month with the highest average low temperature is March (25.3°C).
The coldest month (with the lowest average low temperature) is July (22.5°C).

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Average pressure in May
Libreville, Gabon

Average pressure in May - Libreville, Gabon
  • Average pressure in May: 1011.3mbar

The month with the highest atmospheric pressure is July (1014mbar).
The months with the lowest atmospheric pressure are February and March (1010mbar).

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Average wind speed in May
Libreville, Gabon

Average wind speed in May - Libreville, Gabon
  • Average wind speed in May: 9.2km/h

The windiest month (with the highest average wind speed) is August (13.4km/h).
The calmest month (with the lowest average wind speed) is April (8.2km/h).

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Average humidity in May
Libreville, Gabon

Average humidity in May - Libreville, Gabon
  • Average humidity in May: 85%

The month with the highest relative humidity is November (86%).
The months with the lowest relative humidity are January, February, March and August (81%).

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Average rainfall in May
Libreville, Gabon

Average rainfall in May - Libreville, Gabon
  • Average rainfall in May: 156mm

The wettest month (with the highest rainfall) is November (226mm).
The driest month (with the least rainfall) is July (9mm).

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Average rainfall days in May
Libreville, Gabon

Average rainfall days in May - Libreville, Gabon
  • Average rainfall days in May: 25.8 days

The month with the highest number of rainy days is January (30 days).
The month with the least rainy days is July (8.3 days).

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Average sea temperature in May
Libreville, Gabon

Average sea temperature in May - Libreville, Gabon
  • Average sea temperature in May: 27.6°C

The best month for swimming (with the highest average sea temperature) is March (29.3°C).
The coldest month (with the lowest average sea temperature) is July (24.7°C).

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Average daylight in May /
Average sunshine in May
Libreville, Gabon

Average daylight in May / Average sunshine in May - Libreville, Gabon
  • Average daylight in May: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 6min).
The month with the shortest days is December (Average daylight: 12h and 6min).

  • Average sunshine in May: 7h and 1min

The month with the most sunshine is February (Average sunshine: 8h and 18min).
The month with the least sunshine is September (Average sunshine: 5h and 6min).

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Average sunshine days in May
Libreville, Gabon

Average sunshine days in May - Libreville, Gabon
  • Average sunshine days in May: 4.4 days

The month with the most sunshine days is July (20.7 days).
The month with the least sunshine days is January (0.6 days).

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Average UV index in May
Libreville, Gabon

Average UV index in May - Libreville, Gabon
  • Average UV index in May: 7

The months with the highest UV index are January, February, March, April, May, November and December (UV index 7).
The months with the lowest UV index are June, July, August, September and October (UV index 6).

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Average cloud cover in May
Libreville, Gabon

Average cloud cover in May - Libreville, Gabon
  • Average cloud cover in May: 54

The month with the most cloud cover is September (Cloud cover 74).
The month with the least cloud cover is February (Cloud cover 42).

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Average visibility in May
Libreville, Gabon

Average visibility in May - Libreville, Gabon
  • Average visibility in May: 9km

The months with the highest visibility are January, February, March, June, July, August and September (10km).
The months with the lowest visibility are April, May, October, November and December (9km).

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Libreville, Gabon

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