Port Harcourt Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Port Harcourt, Nigeria. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Let's now guide you through the details for a complete overview.
Port Harcourt has a relatively rainy climate with high precipitation levels, averaging 2808 mm (111 in) of rainfall annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
The seasons in Port Harcourt, bring significant changes in precipitation. The wettest month, June, receives heavy rainfall, with an average of 364 mm (14 in) of precipitation. This rainfall is distributed across 18 rainy days.
In contrast, the driest month, January, experiences much less rainfall, totaling 54 mm (2.1 in) over 3 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.June, the wettest month, has a maximum daytime temperature of 30°C (86°F). The city receives 104 hours of sunshine in this period. During the driest month January you can expect a temperature of 33°C (91°F). For more detailed insights into the city's temperatures, visit our Port Harcourt Temperature page.
Explore Port Harcourt's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Port Harcourt spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in Nigeria: City Comparison
The map below shows the annual precipitation across Nigeria. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Port Harcourt vs World: Rainfall Compared
Port Harcourt's average annual precipitation is 2808 mm (111 in). Let's compare this to some popular worldwide tourist destinations:
In Lisbon, Portugal, the average annual precipitation is 774 mm (30 in), characterized by wet winters and dry summers typical of the Mediterranean climate.
In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.
In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.
Mumbai, India, experiences a tropical monsoon climate with 1860 mm (73 in) of annual rainfall, with the majority of precipitation happening during the monsoon season from June to September.
Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.
Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.
Precipitation has a very strong role in determining the local climate and ecosystem:
- Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
- Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.
- The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
- Approximately 70% of lightning bolts strike land rather than oceans.
- A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.
For more detailed information about Port Harcourt's weather, including sunshine hours, humidity levels, and temperature data, visit our Port Harcourt Climate page.
