Climate and monthly weather forecast
Robertsport, Liberia

Robertsport, located in the tropical region of Liberia, experiences a tropical monsoon climate, denominated by the Am representation in the Köppen climate classification system. The climatic conditions in Robertsport are distinguished by high and reasonably consistent temperatures throughout the year, substantial rainfall, and extended hours of daylight.

The temperature fluctuates moderately and remains warm, with the highest averages observed from January to May and in November and December around 31°C (87.8°F) to 32°C (89.6°F). The temperature drops slightly to 27°C (80.6°F) in July and August. Night temperatures in Robertsport remain relatively stable throughout the year, recording averages from 22°C (71.6°F) to 23°C (73.4°F).

Rainfall patterns in Robertsport are distinctive due to the tropical monsoon influence, with a considerable increase in volume from April to June marking the onset of the wet season. The highest average rainfall amounts, reaching to about 927mm (36.5"), occur from July to September. The driest months are February and March, with average rainfall dropping significantly to 5mm (0.2") and 18mm (0.71"), respectively.

Sea temperatures remain warm and inviting for most parts of the year ranging from 27°C (80.6°F) to 29°C (84.2°F). Daylight hours stay relatively constant between 11.7 hours in December to 12.5 hours in June and July.

Visitors planning a trip to Robertsport should consider the dry conditions from November to March. The weather conditions during these months are ideal for outdoor activities, with warm temperatures averaging between 29°C (84.2°F) to 32°C (89.6°F), minimal rainfall ranging from 5mm (0.2") to 84mm (3.31"), accommodating sea temperatures between 27.8°C (82°F) to 28.8°C (83.8°F) and prolonged daylight hours up to 12.1 hours in March.

The period from June to September corresponds to the peak monsoon season and is the least favorable time for a visit to Robertsport. Torrential rainfall reaching up to a staggering 927mm (36.5"), relatively lower temperatures ranging from 27°C (80.6°F) to 28°C (82.4°F), and sea temperatures dropping to 27°C (80.6°F) to 27.4°C (81.3°F) are indicative of challenging weather conditions for tourists.

Spring in Robertsport, refining March, April, and May, signals the transition from the dry to the wet season. Temperatures remain high with averages around 32°C (89.6°F) while the night temperatures offer mild relief at around 23°C (73.4°F). Rainfall starts to accumulate, significantly soaring from 18mm (0.71") in March to 180mm (7.09") in April and reaching a peak of 250mm (9.84") in May. Sea temperatures remain warm averaging around 28.3°C (82.9°F) to 29°C (84.2°F), with prolonged daylight hours extending up to 12.4 hours in May.

Robertsport’s summer, extending from June to August, is predominated by the monsoon season. Temperatures experience a slight dip, with highs of 29°C (84.2°F) in June and lows of 27°C (80.6°F) in July and August. The night temperatures stay at a constant 23°C (73.4°F). A significant upsurge in rainfall volume is witnessed during this season, reaching up to 803mm (31.61") to 927mm (36.5"), accompanied by warm sea temperatures of around 27.4°C (81.3°F) to 28.4°C (83.1°F) and daylight hours of 12.5 hours.

September to November denotes the autumn season in Robertsport, with the weather conditions gradually transitioning from the wet to the dry phase. Daytime temperatures elevate from 28°C (82.4°F) in September to 31°C (87.8°F) in November, while night temperatures stay constant at 22°C (71.6°F). September experiences a high volume of rainfall at 927mm (36.5"), which progressively reduces to 371mm (14.61") in October and further to 114mm (4.49") in November. The sea temperature varies between 27.2°C (81°F) and 28.7°C (83.7°F), with daylight hours reducing to 11.8 hours in November.

Winter in Robertsport, focusing on December, January, and February, marks the dry season, with pleasant warm temperatures during the day-time ranging from 31°C (87.8°F) to 32°C (89.6°F), night lows of around 22°C (71.6°F), and sea temperatures between 28.4°C (83.1°F) and 28.8°C (83.8°F). Rainfall is minimal during this period, with amounts from 84mm (3.31") in December dropping to 5mm (0.2") in February. Daylight hours decrease slightly to 11.7 hours by the end of February.

Beginning the year, Robertsport sees calm weather conditions, with precipitation levels at a yearly low. The seasonal patterns show a general consistency in the climatic factors. In January, the rainfall measures 38mm (1.5"), correlating to relatively dry and sunny days. Weather in January »

Transitioning into February, the weather in Robertsport remains consistent with that of January. Minor fluctuations in temperature define the month's weather characteristics. The rainfall level dips to 5mm (0.2"), marking the driest month of the year. Weather in February »

March in Robertsport witnesses a mild increase in average precipitation. Notable is a gradual rise in the average daylight hours, hinting at a transition towards the wetter part of the year. The temperature range remains consistent with February, retaining the warmth throughout the month. Weather in March »

April marks a significant increase in rainfall, skyrocketing to 180mm (7.09") from the previous month's 18mm (0.71"). The weather pattern thus shifts from dry to wet, with longer daylight hours supporting the change. Even with the rainfall surge, the temperature in Robertsport remains unchanged. Weather in April »

May registers as the month experiencing the highest sea temperature, with the mercury reading 29°C (84.2°F). The weather in Robertsport continues on the pathway carved by April, with rainfall intensifying into the peak of the wet season. Weather in May »

June is a continuation of May's weather patterns in Robertsport. The average temperatures remain steady, and the rainfall continues its increasing trend. Daytime is slightly lengthier, creating more opportunities to soak up the sun. Weather in June »

July stands as the rainiest month in Robertsport with rainfall nearly doubling to 803mm (31.61") from June's 485mm (19.09"). Despite these weather conditions, the temperatures maintain a consistent range, providing somewhat stable climate conditions. Weather in July »

In August, Robertsport’s weather persists with the heightened rainfall from July, with the precipitation slightly increasing to 927mm (36.5"). The temperatures and daylight hours experience minor adjustments, compared to the previous month. Weather in August »

September’s conditions mirror those of August, with rainfall measurements of 927mm (36.5") and similar temperature parameters in Robertsport. As rainfall remains consistent, there are fewer chances for sunny breaks. Despite this wet spell, the generous amount of daylight hours persists. Weather in September »

October signifies a departure from the peak rainy season, with rainfall reducing significantly to 371mm (14.61"). It is a welcome relief for residents and visitors who have weathered the past months' intense showers. As the rainfall eases, the temperatures remain steady, providing a degree of predictability in planning outdoor activities. Weather in October »

November is characterized by further reductions in rainfall, providing a respite from the past months' heavy downpours. As the dry season in Robertsport knocks on the door, temperature and sea temperature remain almost constant. Weather in November »

December rings in with the onset of drier conditions in Robertsport. With the lowest sea temperature of the year at 28.8°C (83.8°F), the coastal city welcomes the decreasing rainfall levels. The temperatures settle into a balanced rhythm yielding an enjoyable climatic milieu. Weather in December »