Climate and monthly weather forecastHarper, Liberia
Climate and monthly weather forecast
The climate of Harper
Derived from the Köppen climate classification, Harper is characterized by an Am or Tropical monsoon climate. Geographically, it is situated within tropical latitudes, thereby experiencing substantial heat all year round, coupled with significant rainfall.Throughout the year, Harper, Liberia, displays a consistent temperature range, rarely falling below 21°C (69.8°F) or rising above 31°C (87.8°F). Offsetting this apparent stability, however, is a marked fluctuation in the distribution of rainfall. Rainfall hovers between 60mm (2.36") in January, eventually peaking at 419mm (16.5") in June. Afterward, a gradual decrease proceeds towards the end of the year, with December rainfall at 124mm (4.88").
It is also pertinent to note that daylight hours remain almost constant throughout the year, oscillating mildly between 11.9 and 12.4 hours. Parallely, sea temperature also exhibits a relatively stable pattern, ranging from a low of 25.8°C (78.4°F) in August to a high of 29.2°C (84.6°F) in April. Trends indicate a UV index that remains largely stable, except for a slight dip from 12 to 11 between June and August, and then again in December.
The best time to visit Harper
With considerations of the tropical climate and the rainfall patterns, the "driest" window in Harper, when rainfall reduces to nearly 60mm (2.36") in January and February, appears to be the most comfortable time to visit. These months offer a balance of temperate conditions and reduced rainfall, making outdoor activities and exploration of Harper more appealing.The worst time to visit Harper
The worst time to visit Harper, Liberia, would arguably be during the heavy rainy season, particularly between May and September. These months receive substantial rainfall, with the highest peak recorded at 419mm (16.5") in June. The incessant rains and overall gloomy weather can potentially hinder outdoor activities and dampen the exploration spirit.Spring weather in Harper
Harper experiences a tropical monsoon climate, which does not have the typical four-season pattern. However, considering the data, 'Spring' could refer to the months of March, April, and May. During this period, temperatures stay nearly constant at a warm 30°C (86°F) to 31°C (87.8°F), while the rainfall increases significantly to around 119mm (4.69") to 326mm (12.83"). This period also sees an increased sea temperature of up to 29.2°C (84.6°F) in April.Summer weather in Harper
The months from June to August in Harper, which might be likened to 'Summer', are characterized by heavy rainfall, peaking at a high 419mm (16.5") in June. Temperatures cool slightly to 27°C (80.6°F) to 28°C (82.4°F), and sea temperatures dip to their lowest in August at 25.8°C (78.4°F). Bear in mind, the UV index drops slightly to 11 during this period.Autumn weather in Harper
September, October, and November may draw parallels to 'Autumn', marked mainly by a decrease in rainfall from 267mm (10.51") to 183mm (7.2"). Temperature modestly rises, stabilizing around 27°C (80.6°F) to 29°C (84.2°F), as sea temperatures pick up, returning to warmer conditions in the 26.3°C (79.3°F) to 28.2°C (82.8°F) range.Winter weather in Harper
Winter in Harper is indicative of the months December, January, and February. During this 'Winter', temperature remains steady at 29°C (84.2°F) to 30°C (86°F), while rainfall decreases significantly to its lowest at 60mm (2.36") in January. Interestingly, these 'Winter' months boast of longer daylight hours floating around 11.9 to 12 hours.Weather in January
January in Harper, Liberia, is characterized by warm temperatures and prevalent sunlight, making it an ideal setting for outdoor activities. The weather is quite stable, with both day and night temperatures maintaining a pleasant warmth. Weather in January »Weather in February
February undergoes a minor weather transition in Harper as the precipitation increases. The month witnesses a noticeable surge in rainfall, presenting with 92mm (3.62") of downpour. Temperature and daylight conditions exhibit little difference from the previous month, ensuring that the city stays pleasantly warm throughout. Weather in February »Weather in March
The weather scenario in Harper takes a moderately rainy turn come March. This month takes the lead for the highest UV index across the year, standing firmly at 12. However, the increment in daylight hours, coupled with warm temperatures, favor the nurturing of rich biodiversity and tropical flora. Weather in March »Weather in April
April is characterized by the highest volume of rainfall compared to the previous months, with 149mm (5.87") of rain, significantly impacting Harper's overall climate. Even though this month carries the highest rainfall so far, the temperatures remain stable, providing warmth during the day and at night. Weather in April »Weather in May
May ushers in the peak of the rainy season in Harper, and persistent downpours become a dominant feature of this period. While the amount of rainfall peaks this month, the daylight conditions continue to reflect a tropical climate. Weather in May »Weather in June
The rainy trend continues well into June in Harper, and the city receives a substantial amount of rainfall. The weather conditions of this month render it the wettest in all of Harper's calendar, with rainfall stretching to 419mm (16.5"). Weather in June »Weather in July
July reveals a break in the high rainfall trend that Harper has experienced over the previous months. The weather conditions during the day and night continue to be warm, allowing the city to maintain its tropical charm. However, the significant reduction in rainfall this month, dipping to 189mm (7.44"), signals a downward trend in the city's regular downpours. Weather in July »Weather in August
As Harper transitions into August, the weather features a distinctive reduction in rainfall compared to its peak during June. The city witnesses a further dip in the rainfall, measuring 155mm (6.1"), while the sea temperature continues to cool lightly. Weather in August »Weather in September
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. Weather in September »Weather in October
When October arrives in Harper, the climate continues its gradual taper from the peak rainy season. The rainfall sees a decrease down to 221mm (8.7"), commencing a more noticeable transition towards drier months. The overall weather conditions during October uphold the usual warm temperatures experienced in Harper, both during daylight hours and at night. Weather in October »Weather in November
Harper's climate transforms subtly in November, with the weather conditions hinting at the beginning of the dry season. The rainfall minimizes further, to approximately 183mm (7.2"), signifying a clear trend towards drier conditions. Weather in November »Weather in December
December brings about the conclusion of the year with a welcome decline in rainfall levels in Harper, Liberia. There is a noticeable reduction in rainfall, reaching a record low of 124mm (4.88"), marking the onset of the dry season. Weather in December »Updated: Aug 18, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The month with the least rainfall is January, when the rain falls for 5 days and typically collects 60mm (2.36") of precipitation.
In Harper, during the entire year, the rain falls for 174 days and collects up to 2304mm (90.71") of precipitation.
January through May, August through November, with an average maximum UV index of 12, are months with the highest UV index.
The months with the most sunshine are February, April and November, with an average of 7h of sunshine.
Harper witnesses its peak temperatures during March and April, when the average high-temperature reaches 31°C (87.8°F).
April is the month with the warmest seawater, with an average sea temperature of 29.2°C (84.6°F).
June is the month with the most rainfall in Harper. Rain falls for 22 days and accumulates 419mm (16.5") of precipitation.
June has the longest days of the year, with an average of 12h and 24min of daylight.
June through September, with an average of 3h of sunshine, are months with the least sunshine.
June, July and December, with an average maximum UV index of 11, are months with the lowest UV index.
August, known for its average high temperature of 26°C (78.8°F) and an average low temperature of 22°C (71.6°F), is the coldest month.
August is the month with the coldest seawater, with an average sea temperature of 25.8°C (78.4°F).
December has the shortest days of the year, with an average of 11h and 54min of daylight.
Harper does not observe Daylight Saving Time (DST). GMT timezone is used throughout the entire year.
Average temperature
Harper, Liberia
The 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).
The 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
Harper, Liberia
- Average rainfall in January:
60mm - Average rainfall in February:
92mm - Average rainfall in March:
119mm - Average rainfall in April:
149mm - Average rainfall in May:
326mm - Average rainfall in June:
419mm
- Average rainfall in July:
189mm - Average rainfall in August:
155mm - Average rainfall in September:
267mm - Average rainfall in October:
221mm - Average rainfall in November:
183mm - Average rainfall in December:
124mm
The wettest month (with the highest rainfall) is June (419mm).
The driest month (with the least rainfall) is January (60mm).
Average rainfall days
Harper, Liberia
- Average rainfall days in January:
5 days - Average rainfall days in February:
5 days - Average rainfall days in March:
7 days - Average rainfall days in April:
11 days - Average rainfall days in May:
21 days - Average rainfall days in June:
22 days
- Average rainfall days in July:
17 days - Average rainfall days in August:
20 days - Average rainfall days in September:
22 days - Average rainfall days in October:
18 days - Average rainfall days in November:
16 days - Average rainfall days in December:
10 days
The months with the highest number of rainy days are June and September (22 days).
The months with the least rainy days are January and February (5 days).
Average sea temperature
Harper, Liberia
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 / Average sunshine
Harper, Liberia
- Average daylight in January:
11h and 54min - Average daylight in February:
12h and 0min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 12min - Average daylight in May:
12h and 18min - Average daylight in June:
12h and 24min
- Average daylight in July:
12h and 18min - Average daylight in August:
12h and 18min - Average daylight in September:
12h and 6min - Average daylight in October:
12h and 0min - Average daylight in November:
11h and 54min - Average daylight in December:
11h and 54min
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).
The months with the most sunshine are February, April and November (Average sunshine: 7h).
The months with the least sunshine are June, July, August and September (Average sunshine: 3h).
Average UV index
Harper, Liberia
The months with the highest UV index are January, February, March, April, May, August, September, October and November (UV index 12).
The months with the lowest UV index are June, July and December (UV index 11).
