Harper
Liberia
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Harper, Liberia

The first month of the autumn, September, is still a warm month in Harper, Liberia, with average temperature fluctuating between 27°C (80.6°F) and 22°C (71.6°F).

Temperature

In September, the average high-temperature is essentially the same as in August - a still warm 27°C (80.6°F). In September, the average low-temperature is 22°C (71.6°F).

Rainfall

In Harper, during September, the rain falls for 22 days and regularly aggregates up to 267mm (10.5") of precipitation. Throughout the year, in Harper, there are 174 rainfall days, and 2304mm (90.7") of precipitation is accumulated.

Sea temperature

In September, the average sea temperature in Harper is 26.3°C (79.3°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In September, the average length of the day is 12.1h.

Sunshine

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

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 of 11, and more, symbolizes an extreme threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: In September, 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. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Harper?

The average high-temperature, in September, in Harper, is 27°C (80.6°F), while the average low-temperature is 22°C (71.6°F).

How much does it rain in Harper in September?

In September, in Harper, the rain falls for 22 days. Throughout September, 267mm (10.5") of precipitation is accumulated.

What is the water temperature in September in Harper?

In Harper, the average seawater temperature in September is 26.3°C (79.3°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 September in Harper?

In September, the average length of the day in Harper is 12.1h.

What is the month with the least sunshine in Harper?

Months with the least sunshine are June through September, with an average of 3h of sunshine.

How long on average sun shines in September in Harper?

In Harper, Liberia, the average sunshine in September is 3h.

When is the highest UV index in Harper?

January through May, August through November, with an average maximum UV index of 12, are months with the highest UV index in Harper.

What is the UV index intensity in September in Harper?

The average daily maximum UV index in September in Harper, Liberia, is 12. A UV Index estimate of 11, and higher, represents an extreme health threat from unsafe exposure to the Sun's UV rays.
Average temperature in September - Harper, Liberia
  • Average high temperature in September: 27°C

Warmest months (with the highest average high temperature) are March and April (31°C).
The month with the lowest average high temperature is August (26°C).

  • Average low temperature in September: 22°C

Months with the highest average low temperature are February, March, April, May, June, July, August, September, October, November and December (22°C).
The coldest month (with the lowest average low temperature) is January (21°C).

Average rainfall in September - Harper, Liberia
  • Average rainfall in September: 267mm

The wettest month (with the highest rainfall) is June (419mm).
The driest month (with the lowest rainfall) is January (60mm).

Average rainfall days in September - Harper, Liberia
  • Average rainfall days in September: 22 days

Months with the highest number of rainy days are June and September (22 days).
Months with the lowest number of rainy days are January and February (5 days).

Average sea temperature in September - Harper, Liberia
  • Average sea temperature in September: 26.3°C

The best month for swimming (with the highest average sea temperature) is April (29.2°C).
The coldest month (with the lowest average sea temperature) is August (25.8°C).

Average daylight in September / Average sunshine in September - Harper, Liberia
  • Average daylight in September: 12.1h

The month with the longest days is June (Average daylight: 12.4h).
Months with shortest days are January, November and December (Average daylight: 11.9h).

  • Average sunshine in September: 3h

Months with most sunshine are February, April and November (Average sunshine: 7h).
Months with least sunshine are June, July, August and September (Average sunshine: 3).

Average UV index in September - Harper, Liberia
  • Average UV index in September: 12

Months with the highest UV index are January, February, March, April, May, August, September, October and November (UV index 12).
Months with the lowest UV index are June, July and December (UV index 11).