May weather forecast and climate
Libreville, Gabon

Tarmac road beside sandy beaches leading into the Libreville city in Gabon
Tarmac road beside sandy beaches leading into the Libreville city in Gabon
The last month of the spring, May, is also a moderately hot month in Libreville, Gabon, with average temperature varying between 28.9°C (84°F) and 24.7°C (76.5°F).

Temperature

In May, the average high-temperature is practically the same as in April - a still warm 28.9°C (84°F). In May, in Libreville, Gabon, the average low-temperature is 24.7°C (76.5°F).

Heat index

In May, the average heat index is evaluated at a very hot 35.6°C (96.1°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the 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 'real feel', 'apparent temperature', 'feels like', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, wind, differences in body mass, height, and shape), and activity. 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. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity is 85%.

Rainfall

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

Sea temperature

In Libreville, the average seawater temperature is 27.6°C (81.7°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

Months with the longest days in Libreville are January through December, with an average of 12.1h of daylight. January through December, with an average of 12.1h of daylight, are months with the shortest days.

Sunshine

In May, the average sunshine is 7.2h.

UV index

Months with the highest UV index are January through May, November and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: In May, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in May in Libreville?

The average high-temperature, in May, in Libreville, is 28.9°C (84°F), while the average low-temperature is 24.7°C (76.5°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, in May is calculated to 35.6°C (96.1°F).

What is the average humidity in May in Libreville?

The average relative humidity in May is 85%.

How many days does it rain in May in Libreville?

In Libreville, Gabon, in May, it is raining for 25.8 days, with typically 156mm (6.14") of accumulated precipitation.

What is the water temperature 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.

When are the longest days in Libreville?

January through December, with an average of 12.1h of daylight, are months with the longest days in Libreville.

What is the month with the shortest days in Libreville?

January through December, with an average of 12.1h of daylight, are months with the shortest days in Libreville, Gabon.

What is the average length of the day in May in Libreville?

In Libreville, Gabon, the average length of the day in May is 12.1h.

How long on average sun shines in May in Libreville?

The average sunshine in May in Libreville, Gabon, 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.

How high is the UV index in May in Libreville?

In May, the average daily maximum UV index in Libreville, Gabon, is 7. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays.
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).

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

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

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).

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

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

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).

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).

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).

Average daylight in May / Average sunshine in May - Libreville, Gabon
  • Average daylight in May: 12.1h

Months with the longest days are January, February, March, April, May, June, July, August, September, October, November and December (Average daylight: 12.1h).
Months with the shortest days are January, February, March, April, May, June, July, August, September, October, November and December (Average daylight: 12.1h).

  • Average sunshine in May: 7.2h

The month with the most sunshine is February (Average sunshine: 8.3h).
The month with the least sunshine is September (Average sunshine: 5.1h).

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).

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

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

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).

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

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