CLIMATE AND HEALTHE BULLETIN FOR JANUARY2026

Rainfall Forecast
Humidity forecast
Malaria Vigilance
Documents
Rainfall

Summary:

In January 2026, the forecasted cumulative rainfall amount across the counties is anticipated to be between 20.9mm and 58.0mm. Sinoe, River Gee, Grand Kru and Maryland are expected to record rainfall amounts between 48.9mm and 58.0mm. Rainfall amounts of below 20.0mm are predicted in upper Lofa and Nimba counties. The rest of the Country are expected to experience between 21.00mm to 40.00mm.

Maximum Temperature

Summary:

The maximum temperature in January 2026 is anticipated to be 28.9°C to 32.1°C across the counties. The lowest maximum daytime temperatures are predicted over Maryland, River Gee, Grand Kru and Sinoe counties. The highest maximum temperature are expected in the north and wester regions of the country. However, the extreme maximum temperature is expected to occur in part of Nimba, Grand Cape Mount and Bomi counties.

Minimum Teemperature

Summary:

Minimum temperatures across the country in January 2026 are anticipated to range between 17.4°C and 25.9°C. The lowest maximum temperature range of 16.9°C to 19.1°C is anticipated in parts of Lofa, Gbapolu, Bong and Nimba counties, while the highest maximum temperature of 25.9°C is expected in the coastal region with Margibi expected to experience the highest.

Humidity

Summary:

Relative humidity across Liberia for January 2026 is predicted to range from 62.4% to 81.8%, as shown in Figure 2. The highest range of values (79.5–81.8%) is expected in the coastal and the southeast counties. The extreme north is expected to record the lowest relative humidity, 62.4% while the rest of the country is expected to record a range of 62.7% to 77.1%.

Malaria

Summary:

The expected climatic conditions in the month of January 2026 suggest a moderate prospects of malaria incidences in Sinoe, River Gee, Grand and Maryland counties. However, low vigilance cases are expected to occur in other parts of counties during the forecast period.

Summary:

In the January 2026 forecast, cumulative rainfall across Liberia is expected to range between 20.9 mm and 58.0 mm. Higher rainfall amounts (48.9–58.0 mm) are anticipated in Sinoe, River Gee, Grand Kru, and Maryland counties, while upper Lofa and Nimba are predicted to receive less than 20.0 mm. The remaining parts of the country are expected to record rainfall between 21.0 mm and 40.0 mm.

Throughout this period, Relative humidity is forecasted to range from 62.4% to 81.8% nationwide. The highest values (79.5–81.8%) are expected along the coastal and southeastern counties, while the extreme northern region is likely to experience the lowest relative humidity (62.4%). Other areas are expected to record values between 62.7% and 77.1%.

Maximum temperatures are anticipated to range from 28.9°C to 32.1°C. Lower maximum temperatures are expected over Maryland, River Gee, Grand Kru, and Sinoe, while higher values are forecasted for the northern and western regions. Minimum temperatures are projected to range between 17.4°C and 25.9°C, with the lowest values (16.9–19.1°C) anticipated in parts of Lofa, Gbapolu, Bong, and Nimba, and the highest minimum temperatures (up to 25.9°C) expected in coastal counties, particularly Margibi.

The mean air temperature values for January 2026 are forecasted to range between 24.3°C and 27.5°C. Lower mean temperature values between (24.0–25.0°C) are expected over Lofa and parts of Gbapolu, while higher temperature averages between (26.5–27.5°C) are anticipated across the coastal counties.

The prevailing climatic conditions suggest moderate malaria risk in Sinoe, River Gee, Grand Kru, and Maryland, while low vigilance is expected in other parts of the country during the forecast period.

Forecasted temperature and humidity conditions may contribute to drug and medication instability nationwide. High vigilance is advised for Sinoe, River Gee, Grand Kru, and Maryland, while moderate vigilance is recommended for Rivercess, Grand Gedeh, Grand Bassa, Margibi, and parts of Montserrado and Bong. Low vigilance is anticipated in the northern and southwestern regions, including Lofa, Gbapolu, Grand Cape Mount, Bomi, and parts of Nimba and Bong.

With respect to heat stress, extreme caution is advised across the country. High heat index conditions are expected in Bomi, Grand Cape Mount, and parts of Gbapolu and Montserrado, while the rest of Liberia is likely to experience cautionary heat index levels.