Freetown
Sierra Leone
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Freetown, Sierra Leone

The hilly seaside city of Freetown in Sierra Leone, with calm waters on sunny dusk
The hilly seaside city of Freetown in Sierra Leone, with calm waters on sunny dusk
The last month of the spring, May, is another tropical month in Freetown, Sierra Leone, with average temperature ranging between min 24.4°C (75.9°F) and max 30.9°C (87.6°F).

Temperature

In May, the average high-temperature is essentially the same as in April - a still tropical 30.9°C (87.6°F). In May, in Freetown, the average low-temperature is 24.4°C (75.9°F).

Heat index

The average heat index in May is estimated at a sweltering 38.2°C (100.8°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 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 what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like activity, differences in body mass, height, and shape, pregnancy, and metabolic differences affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, 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, as evaporated sweat carries heat away from the body. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. 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 in Freetown is 73%.

Rainfall

In Freetown, it is raining for 15 days, with typically 177.2mm (7") of accumulated precipitation. Throughout the year, there are 152 rainfall days, and 2945.3mm (116") of precipitation is accumulated.

Sea temperature

In Freetown, the average seawater temperature in May is 28.6°C (83.5°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day in May is 12.5h.

Sunshine

In May, the average sunshine is 6.1h.

UV index

Months with the highest UV index are February through May, August through October, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 12 translate into the following recommendations:
Practice all-important precautions. Light skin people may get burned in less than 5 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. 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. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in May in Freetown?

In Freetown, in May, the average high-temperature is 30.9°C (87.6°F), and the average low-temperature is 24.4°C (75.9°F). In May, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that combines both air temperature and relative humidity, is estimated at 38.2°C (100.8°F).

What is the average humidity in May in Freetown?

The average relative humidity in May in Freetown, Sierra Leone, is 73%.

How much does it rain in Freetown in May?

In Freetown, Sierra Leone, in May, it is raining for 15 days, with typically 177.2mm (7") of accumulated precipitation.

What is the water temperature in May in Freetown?

In Freetown, Sierra Leone, in May, the average water temperature is 28.6°C (83.5°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

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

In May, the average length of the day in Freetown, Sierra Leone, is 12.5h.

How many hours of sunshine does Freetown have in May?

The average sunshine in May is 6.1h.

What are the months with the highest UV index in Freetown?

Months with the highest UV index in Freetown are February through May, August through October, with an average maximum UV index of 12.

How high is the UV index in May in Freetown?

The average daily maximum UV index in May in Freetown is 12. A UV Index estimate of 11, and higher, represents an ultimate hazard to health from the exposure to the Sun's UV rays.
Average temperature in May - Freetown, Sierra Leone
  • Average high temperature in May: 30.9°C

The warmest month (with the highest average high temperature) is April (31.2°C).
The month with the lowest average high temperature is August (28.4°C).

  • Average low temperature in May: 24.4°C

The month with the highest average low temperature is April (24.8°C).
The coldest month (with the lowest average low temperature) is August (23°C).

Average humidity in May - Freetown, Sierra Leone
  • Average humidity in May: 73%

The month with the highest relative humidity is August (82%).
The month with the lowest relative humidity is January (66%).

Average rainfall in May - Freetown, Sierra Leone
  • Average rainfall in May: 177.2mm

The wettest month (with the highest rainfall) is August (791.1mm).
The driest month (with the lowest rainfall) is January (3.4mm).

Average rainfall days in May - Freetown, Sierra Leone
  • Average rainfall days in May: 15 days

Months with the highest number of rainy days are July and August (27 days).
Months with the lowest number of rainy days are January and February (0 days).

Average sea temperature in May - Freetown, Sierra Leone
  • Average sea temperature in May: 28.6°C

Best months for swimming (with the highest average sea temperature) are November and December (28.8°C).
The coldest month (with the lowest average sea temperature) is August (27.3°C).

Average daylight in May / Average sunshine in May - Freetown, Sierra Leone
  • Average daylight in May: 12.5h

Months with the longest days are June and July (Average daylight: 12.6h).
The month with shortest days is December (Average daylight: 11.6h).

  • Average sunshine in May: 6.1h

The month with most sunshine is February (Average sunshine: 7.7h).
The month with least sunshine is August (Average sunshine: 2.8h).

Average UV index in May - Freetown, Sierra Leone
  • Average UV index in May: 12

Months with the highest UV index are February, March, April, May, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).