The global soybean market operates on a dynamic, year-round soybean calendar that is dictated by the distinct planting, growing, and harvest seasons of the world’s major producers. This calendar is a crucial tool for traders, farmers, and analysts, as it determines the rhythm of global supply and demand, influences price volatility, and dictates the timing of export flows. The market is not a single, monolithic entity but a continuous cycle driven by the different hemispheres.
This comprehensive guide breaks down the global soybean calendar, detailing the key phases by region, explaining their impact on global markets, and providing a clear framework for navigating the seasonal shifts in supply and trade.

The North American Soybean Calendar: The U.S. and Canada
The U.S. and Canada operate on a Northern Hemisphere crop cycle, which is the primary source of global supply in the latter half of the year.
Planting Season (April-June): Spring in the Soybean Belt
- April: The planting season begins in the southern U.S. states and gradually moves northward. Favorable weather conditions, such as warm, dry soil, are critical for a timely start.
- May: This is the peak planting month for the heart of the U.S. Soybean Belt (Illinois, Iowa, Minnesota, and Indiana). The pace of planting is closely watched by the market, as delays due to excessive rain can create anxiety about the final yield.
- June: Planting concludes in the Northern Plains (the Dakotas) and the Canadian Prairies. The USDA’s Acreage Report provides the first official estimate of the planted area, a key figure for the market.
Growing Season (June-August): The Crucial Mid-Summer
- June-July: Soybeans are in their vegetative growth stage, and the market is highly sensitive to weather conditions.
- July-August: This is the most critical period for the U.S. soybean crop—the reproductive and pod-filling stages. A hot, dry spell during this time can have a devastating impact on yields, leading to sharp rallies in futures prices. This is the period when the market is most focused on weather forecasts for the Midwest.
Harvest Season (September-November): The Supply Flood
- September: Harvest begins in the southern U.S. and slowly moves northward. The market is watching for initial yield reports from farmers and combines.
- October: This is the peak harvest month for the U.S. soybean crop. A dry October is ideal for a fast, efficient harvest, allowing farmers to get the beans out of the field and into storage quickly.
- November: Harvest concludes in the northern states and Canada. By this point, the market has a good sense of the final U.S. crop size.

U.S. Export Window (September-February): The Primary Global Supplier
The U.S. becomes the world’s dominant soybean exporter in the fourth quarter soybean calendar. It is the primary supplier for global markets, especially for countries like China, Mexico, and the European Union. U.S. exports peak between October and December, as the new crop becomes available. This is the soybean calendar period when a strong demand from China is most critical for providing a price floor for the U.S. crop.
The South American Cycle: Brazil and Argentina
Brazil and Argentina operate on a Southern Hemisphere crop cycle, and their harvest, which takes place during the U.S. winter, is the primary source of global supply in the first half of the year in the soybean calendar.
Planting Season (September-December): A Race Against Time
- September-October: Planting begins in Brazil and Argentina. The pace of planting is closely monitored, as a delay due to a lack of rain could put the final crop at risk.
- November-December: Planting concludes in both countries. At this point, the market has a good sense of the total planted area, which, along with weather forecasts, is a key indicator of the final crop size.
Growing Season (January-March): The Brazilian Giant Awakens
- January-February: This is the most crucial period for the Brazilian and Argentine soybean crops. The market is hyper-focused on weather forecasts for these regions, as a drought during this time can have a catastrophic impact on the global supply. This is often when U.S. prices are most volatile, as a Brazilian drought would likely trigger a powerful rally in U.S. soybean futures.
- March: The crop is maturing, and the market is beginning to get a sense of the final yields.
Harvest Season (April-June): The World’s Primary Supplier
- April-May: This is the peak soybean calendar harvest period for Brazil. A fast harvest can flood the global market with supply, putting downward pressure on prices.
- June: Harvest concludes in both Brazil and Argentina.
South American Export Window (March-August): The Dominant Force
South America becomes the world’s dominant soybean exporter in the second quarter soybean calendar. Brazil, in particular, exports massive volumes of soybeans to China and other Asian markets. The price and volume of these exports are a key factor in global supply, and they create a period of intense competition with the U.S. market.
The two cycles are in constant interplay, creating a continuous global supply chain. The U.S. crop cycle (planting in May, harvesting in October) and the South American crop cycle (planting in November, harvesting in April) provide a year-round supply of soybeans to the world.
- The U.S. Export Window: The U.S. has a clear export window from September to February, when its crop is readily available.
- The South American Export Window: South America dominates the export market from March to August.
Market Implications and Strategic Planning
Understanding the global soybean calendar is critical for anyone in the business.
- Price Volatility: The calendar dictates when price volatility is most likely. The U.S. market is most volatile in July and August, when the crop is sensitive to weather. The South American market is most volatile in January and February.
- Trade Flows: The calendar dictates global trade flows. A strong U.S. harvest can ease demand for the South American crop, while a poor U.S. crop can put a premium on a good South American harvest.
- Risk Management: A trader can use the calendar to manage risk. For example, a U.S. farmer can sell a portion of their crop on a futures contract in the summer, hedging against a potential weather-related price drop. A global buyer can use the calendar to diversify their sourcing, buying from the U.S. in the fall and from Brazil in the spring to ensure a continuous and secure supply.
In conclusion, the global soybean calendar is more than just a schedule of planting and harvesting. It’s a strategic roadmap for the world’s most important oilseed, dictating market rhythm, managing risk, and shaping the future of global supply and demand.








