May weather forecast and climate
Port Harcourt, Nigeria

The last month of the spring, May, is another tropical month in Port Harcourt, Nigeria, with temperature in the range of an average low of 23.7°C (74.7°F) and an average high of 30.3°C (86.5°F).

Temperature

In May, the average high-temperature is essentially the same as in April - a still hot 30.3°C (86.5°F). In Port Harcourt, in May, the average low-temperature is 23.7°C (74.7°F).

Heat index

The average heat index is evaluated at a torrid 39.5°C (103.1°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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, clothing, differences in body mass, height, and shape). 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 especially crucial for babies and toddlers. 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. 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

In May, the average relative humidity in Port Harcourt is 83%.

Rainfall

In Port Harcourt, it is raining for 27.4 days, with typically 176mm (6.93") of accumulated precipitation. Throughout the year, there are 310.7 rainfall days, and 2138mm (84.17") of precipitation is accumulated.

Sea temperature

In Port Harcourt, in May, the average water temperature is 28.8°C (83.8°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

The average length of the day in Port Harcourt is 12.3h.

Sunshine

In Port Harcourt, Nigeria, the average sunshine is 7.2h.

UV index

The average daily maximum UV index in Port Harcourt is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 6 translate into the following recommendations:
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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in May in Port Harcourt?

The average high-temperature, in May, in Port Harcourt, is 30.3°C (86.5°F), while the average low-temperature is 23.7°C (74.7°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that combines air temperature and relative humidity, in May is calculated to 39.5°C (103.1°F).

What is the average humidity in May in Port Harcourt?

The average relative humidity in May is 83%.

How much does it rain in Port Harcourt in May?

In Port Harcourt, Nigeria, during May, the rain falls for 27.4 days and regularly aggregates up to 176mm (6.93") of precipitation.

What is the water temperature in May in Port Harcourt?

In Port Harcourt, in May, the average water temperature is 28.8°C (83.8°F). 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.

How many hours of daylight does Port Harcourt have in May?

In May, the average length of the day in Port Harcourt, Nigeria, is 12.3h.

How many hours of sunshine does Port Harcourt have in May?

The average sunshine in May in Port Harcourt is 7.2h.

How high is the UV index in May in Port Harcourt?

The average daily maximum UV index in May in Port Harcourt, Nigeria, is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in May - Port Harcourt, Nigeria
  • Average high temperature in May: 30.3°C

The warmest month (with the highest average high temperature) is January (32.8°C).
The month with the lowest average high temperature is July (26.8°C).

  • Average low temperature in May: 23.7°C

The month with the highest average low temperature is March (24.3°C).
The coldest month (with the lowest average low temperature) is August (21.8°C).

Average pressure in May - Port Harcourt, Nigeria
  • Average pressure in May: 1011.2mbar

The month with the highest atmospheric pressure is July (1013.6mbar).
The month with the lowest atmospheric pressure is February (1009.7mbar).

Average wind speed in May - Port Harcourt, Nigeria
  • Average wind speed in May: 7.5km/h

The windiest month (with the highest average wind speed) is August (9.6km/h).
The calmest month (with the lowest average wind speed) is November (6.3km/h).

Average humidity in May - Port Harcourt, Nigeria
  • Average humidity in May: 83%

Months with the highest relative humidity are July and September (88%).
The month with the lowest relative humidity is January (70%).

Average rainfall in May - Port Harcourt, Nigeria
  • Average rainfall in May: 176mm

The wettest month (with the highest rainfall) is July (293mm).
The driest month (with the least rainfall) is December (45mm).

Average rainfall days in May - Port Harcourt, Nigeria
  • Average rainfall days in May: 27.4 days

Months with the highest number of rainy days are August and October (30.1 days).
The month with the least rainy days is January (14.9 days).

Average sea temperature in May - Port Harcourt, Nigeria
  • Average sea temperature in May: 28.8°C

The best month for swimming (with the highest average sea temperature) is April (28.9°C).
The coldest month (with the lowest average sea temperature) is August (26.1°C).

Average daylight in May / Average sunshine in May - Port Harcourt, Nigeria
  • Average daylight in May: 12.3h

Months with the longest days are June and July (Average daylight: 12.4h).
The month with the shortest days is December (Average daylight: 11.8h).

  • Average sunshine in May: 7.2h

The month with the most sunshine is December (Average sunshine: 9.6h).
The month with the least sunshine is August (Average sunshine: 3.4h).

Average sunshine days in May - Port Harcourt, Nigeria
  • Average sunshine days in May: 2.5 days

The month with the most sunshine days is January (15.3 days).
The month with the least sunshine days is September (0.2 days).

Average UV index in May - Port Harcourt, Nigeria
  • Average UV index in May: 6

Months with the highest UV index are January, February, April, November and December (UV index 7).
Months with the lowest UV index are July and August (UV index 5).

Average cloud cover in May - Port Harcourt, Nigeria
  • Average cloud cover in May: 51

The month with the most cloud cover is August (Cloud cover 78).
Months with the least cloud cover are January and December (Cloud cover 26).

Average visibility in May - Port Harcourt, Nigeria
  • Average visibility in May: 8km

Months with the highest visibility are January, February, March, April and December (9km).
Months with the lowest visibility are July, August, September and October (7km).