May weather forecast
Port Harcourt, Nigeria

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Weather in May

May solidifies Port Harcourt's reputation as a high-humidity destination. With rain being a regular occurrence, the wettest period of the year truly settles in. It is crucial to note, however, that despite the mounting rainfall touching 176mm (6.93"), there is no sign of extreme weather or hazards. With the sea maintaining a comfortable temperature, water-based activities are still enticing to many. Ultimately, the weather in May is a showcase of tropical moisture, interspersed with bright sunny spells.

Temperature

Port Harcourt's entry into May measures an average high-temperature of a still hot 30.3°C (86.5°F), closely parallel to the preceding month. Throughout May, the average low-temperature records at a warm 23.7°C (74.7°F).

Heat index

Throughout May, the heat index is estimated at a blisteringly hot 40°C (104°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The average relative humidity in May is 83%.

Rainfall

In Port Harcourt, during May, the rain falls for 27.4 days and regularly aggregates up to 176mm (6.93") of precipitation. Throughout the year, there are 310.7 rainfall days, and 2138mm (84.17") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature in Port Harcourt is 28.8°C (83.8°F).
Note: For swimming, diving, and various water activities, the temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as highly enjoyable and comfortable for extended durations without any discomfort.

Daylight

The average length of the day in May is 12h and 20min.
On the first day of May in Port Harcourt, sunrise is at 06:20 and sunset at 18:37. On the last day of the month, sunrise is at 06:18 and sunset at 18:41 WAT.

Sunshine

In Port Harcourt, the average sunshine in May is 7.2h.

UV index

In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, a daily UV index of 6 turns into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Stay aware! UV radiation is magnified when reflecting off sand and water.
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Frequently asked questions

How hot is it in Port Harcourt in May?

In May, the average high-temperature and low-temperature in Port Harcourt, Nigeria, are 30.3°C (86.5°F) and 23.7°C (74.7°F) respectively. In May, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 40°C (104°F).

What is the average humidity in May in Port Harcourt?

In May, the average relative humidity is 83%.

How many days does it rain in May in Port Harcourt?

In May, the rain falls for 27.4 days. Throughout May, 176mm (6.93") of precipitation is accumulated.

What is the water temperature in May in Port Harcourt?

In Port Harcourt, the average seawater temperature in May 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.

What is the average length of the day in May in Port Harcourt?

The average day length in May is 12h and 20min.

When is the sunrise / sunset in May in Port Harcourt?

In May, on the first day of the month, sunrise is at 06:20 and sunset at 18:37. On the last day of the month, sunrise is at 06:18 and sunset at 18:41 WAT.

How long on average sun shines in May in Port Harcourt?

In May, the average sunshine duration is 7.2h.

What is the UV index reading in May in Port Harcourt?

The average daily maximum UV index in May in Port Harcourt is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Port Harcourt, Nigeria

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).

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Average pressure in May
Port Harcourt, Nigeria

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).

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Average wind speed in May
Port Harcourt, Nigeria

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).

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Average humidity in May
Port Harcourt, Nigeria

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

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

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Average rainfall in May
Port Harcourt, Nigeria

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).

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Average rainfall days in May
Port Harcourt, Nigeria

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

The 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).

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Average sea temperature in May
Port Harcourt, Nigeria

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).

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Average daylight in May /
Average sunshine in May
Port Harcourt, Nigeria

Average daylight in May / Average sunshine in May - Port Harcourt, Nigeria
  • Average daylight in May: 12h and 2min

The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 54min).

  • Average sunshine in May: 7h and 1min

The month with the most sunshine is December (Average sunshine: 9h and 36min).
The month with the least sunshine is August (Average sunshine: 3h and 24min).

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Average sunshine days in May
Port Harcourt, Nigeria

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).

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Average UV index in May
Port Harcourt, Nigeria

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

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

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Average cloud cover in May
Port Harcourt, Nigeria

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).
The months with the least cloud cover are January and December (Cloud cover 26).

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Average visibility in May
Port Harcourt, Nigeria

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

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

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Port Harcourt, Nigeria

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