September weather forecast
Harper, Liberia

September in Harper signals the slow transition towards the end of the rainy season, with rainfall volumes expectedly seeing another spike. The weather continues to be predominantly warm during the day and the night alike. September experiences a rainfall increase, rising to 267mm (10.51"), making it significantly wetter than the preceding August. The sea temperature also begins to rise slightly, enhancing the overall appeal for sea-based activities. September, therefore, maintains the existing trend of ample rainfall and warm temperatures, reinforcing Harper's enduring tropical atmosphere.

Temperature

The beginning of September in Harper records an average high-temperature of a still moderately hot 27°C (80.6°F), almost echoing the conditions of the previous month. Throughout the nights in September, Harper notes an average low of 22°C (71.6°F), a small dip from the daytime peak.

Rainfall

In Harper, in September, during 22 rainfall days, 267mm (10.51") of precipitation is typically accumulated. Throughout the year, in Harper, there are 174 rainfall days, and 2304mm (90.71") of precipitation is accumulated.

Sea temperature

In Harper, the average seawater temperature in September is 26.3°C (79.3°F).
Note: For swimming, diving, or other water activities, temperatures from 25°C (77°F) to 29°C (84.2°F) provide the most enjoyable experience for extended periods without discomfort.

Daylight

In Harper, the average length of the day in September is 12h and 8min.
On the first day of the month, sunrise is at 06:24 and sunset at 18:36. On the last day of September, sunrise is at 06:18 and sunset at 18:23 GMT.

Sunshine

June through September, with an average of 3h of sunshine, are months with the least sunshine in Harper.

UV index

January through May, August through November, with an average maximum UV index of 12, are months with the highest UV index in Harper. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In September, the maximum UV index of 12 translates into these guidelines:
Enforce all necessary precautions, unprotected skin might burn swiftly. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Even when the sky is cloudy, apply generously and frequently reapply a sunscreen with SPF 30 or more, especially post every swim or outdoor exercise. Take note! Sand and water reflections strengthen the Sun's UV exposure.