Climate

Heavy rains during critical period of cacao cultivation hit Ghana’s yields

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 21/10/2026, 10:54:24 UTC.

Briefings

A September 2026 study by Harvard University researchers found that heavy rainfall during cacao flowering and early pod development, combined with dry-season drought, explains two-thirds of Ghana's annual production variability. This research emerged after global cacao prices surged following poor harvests in West Africa in 2024, prompting analysis of daily weather data. Ghana and Côte d'Ivoire produce 60% of global cocoa, making West Africa central to the chocolate supply chain.

Key points

• Heavy rainfall during cacao flowering and early pod development, combined with dry-season drought, explains two-thirds of Ghana's annual production variability.
• Researchers analyzed daily rainfall and temperature records to identify patterns linking weather to yield fluctuations.

Context

This research addresses a critical issue for West Africa's chocolate supply, as Ghana and Côte d'Ivoire produce 60% of global cocoa. The study emerged from a 2024 investigation into rising cacao prices following poor harvests, focusing on how changing rainfall patterns impact the industry.

Limitations

Evidence is limited to a September 2026 study published in Mongabay, with no additional background context or supplementary data provided.

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