Agrometeorological Dekadal Bulletin-2nd DEKAD MAY 2026
Summary:
The second Dekad of May 2026 was characterized by an increase in rainfall amounts across the country. Nationwide, rainfall totals ranged from 38.7mm to 116mm, with Maryland, Grand Kru, southeast of Sinoe, southwest of Grand Cape Mount and Bomi counties experiencing the highest rainfall amount. The north, central region, including Bassa and north of Montserrado county experienced moderate rainfall, while the rest of the area recorded the lowest rainfall amounts during this period.
Summary:
The second dekad of May 2026 was marked by variation in maximum temperature across the country. Lofa, Grand Kru and the north of Gbarpolu, experienced relatively low maximum temperature. However, the central, southwest, northeast including Rivercess, and east of Bassa experienced the highest maximum temperature. During this period, maximum temperature ranged between 28.5°C and 30.4°C.
Summary:
The second Dekad of May 2026 was marked by variation in minimum temperature. Some parts of the coastal counties (Montserrado, Margibi, Bassa, Rivercess, Sinoe, Grand Kru, and Maryland) experienced high minimum temperature, while Lofa, north, central of Nimba and extreme north of Bong county experienced the lowest. Minimum temperature during this period ranged from 22.1°C to 25.0°C.
Summary:
During the second Dekad of May 2026, the south and western region experienced intense sunshine with high evapotranspiration rates. However, west of Montserrado, south of Margibi and Grand Kru, southeast of Sinoe, west of Grand Bassa county experienced lowest evapotranspiration rate while the north, central of Nimba, northwest of Grand Gedeh and northeast of Bong County experienced high evapotranspiration rate.
Summary:
During the second Dekad of May 2026, vegetation is gradually becoming dense. The coastal region experienced dense increase in vegetation with Sinoe and Rivercess becoming denser. The northern region experienced less dense vegetation during this period with the western region remaining less dense.
Highlight of the Agrometeorological Dekadal Bulletin for the Second DEKAD of May 2026
Rainfall: The second Dekad of May 2026 was characterized by an increase in rainfall amounts across the country. Nationwide, rainfall totals ranged from 38.7mm to 116mm, with Maryland, Grand Kru, southeast of Sinoe, southwest of Grand Cape Mount and Bomi counties experiencing the highest rainfall amount. The north, central region, including Bassa and north of Montserrado county experienced moderate rainfall, while the rest of the area recorded the lowest rainfall amounts during this period.
Maximum Temperature: The second dekad of May 2026 was marked by variation in maximum temperature across the country. Lofa, Grand Kru and the north of Gbarpolu, experienced relatively low maximum temperature. However, the central, southwest, northeast including Rivercess, and east of Bassa experienced the highest maximum temperature. During this period, maximum temperature ranged between 28.5°C and 30.4°C.
Minimum Temperature: The second Dekad of May 2026 was marked by variation in minimum temperature. Some parts of the coastal counties (Montserrado, Margibi, Bassa, Rivercess, Sinoe, Grand Kru, and Maryland) experienced high minimum temperature, while Lofa, north, central of Nimba and extreme north of Bong County experienced the lowest. Minimum temperature during this period ranged from 22.1°C to 25.0°C.
PET: During the second Dekad of May 2026, the south and western region experienced intense sunshine with high evapotranspiration rates. However, west of Montserrado, south of Margibi and Grand Kru, southeast of Sinoe, west of Grand Bassa county experienced lowest evapotranspiration rate while the north, central of Nimba, northwest of Grand Gedeh and northeast of Bong County experienced high evapotranspiration rate.
NDVI: During the second Dekad of May 2026, vegetation is gradually becoming dense. The coastal region experienced dense increase in vegetation with Sinoe and Rivercess becoming denser. The northern region experienced less dense vegetation during this period with the western region remaining less dense.
Weather outlook for May 2026
RAINFALL: In May 2026, the forecasted cumulative rainfall amount across all counties is anticipated to be between 181.9mm and 388.7mm. The coastal region is anticipated to record the highest rainfall amount. The central region is anticipated to record rainfall amount between 220-270mm during the period under review. Nevertheless, the north of the country is predicted to experience low rainfall between 170-220.0mm during the period under review.
Relative Humidity (RH): During the month of May high relative humidity is predicted in the southeast region affecting Rivergee, Grand Gedeh, Sinoe, Maryland and Grand Kru counties. The western region is expected to receive low relative humidity. However, the central region is predicted to experience moderate relative during this period. Average relative humidity within the month of May 2026 is predicted to range from 79.9% to 86.5%
Maximum Temperature: The maximum temperature in May 2026 is anticipated to range between 28.8°C to 31.7°C across the Country. High temperature is expected in G. Cape Mount, Bomi, Montrerrado, parts of Gbapolu, Bong and Nimba counties. Other parts of the Country is anticipated to receive moderate temperature.
Minimum Temperature: Minimum temperature across the country in May 2026 is anticipated to range between 21.6°C and 26.7°C. The highest minimum temperature is anticipated to occur along the coastal region which includes: Maryland, Grand Kru, Sinoe, Rivercess, Grand Bassa, Margibi and Montserrado while the lowest minimum temperature is expected in Lofa and parts of Nimba, Bong, Gbapolu and Grand Gedeh counties
Advisories
As rainfall gradually increases, vegetation is becoming denser, rainfall is expected to intensify during the last dekads of May 2026, and soil moisture content continues to improve. Farmers are strongly encouraged to take the following precautions in their agricultural practices:
Field Preparation:
Move agricultural activities to upland areas for vegetable and rice production; this will help reduce the risk of damage and maximize yields across the country.
Create drainage channels in lowland areas, where possible, to prevent waterlogging during periods of heavy rainfall.
Farmers are advised to properly lay out their fields for rice production during the growing season.
Farmers are also encouraged to commence the planting of rice and other crops in upland areas.
Prepare fields and transplant cocoa seedlings where necessary to ensure better establishment during the rainy season.
Prepare nurseries and plant cocoa seeds to support better establishment during the season.
Crop Management:
Plant drought- or water-tolerant crop varieties to reduce the risk of crop losses.
Monitor crops regularly for signs of disease or stress caused by high evaporation and evapotranspiration.
Irrigate crops when high evaporation and evapotranspiration conditions are observed.
Clear unwanted grass and weeds from cocoa farms and other agricultural fields to improve airflow and oxygen circulation. This will help improve crop yield.
Livestock Management:
Move animals to upland areas to reduce the risk of exposure to heavy rainfall and flooding.
Ensure animals are properly housed and maintain good hygiene practices to prevent disease outbreaks.
Provide clean drinking water regularly to prevent dehydration and heat stress.
Monitor livestock frequently for signs of illness and provide timely treatment when necessary.