# Heatwaves impact summer and winter crops - Joint Research Centre

> The EU Joint Research Centre's MARS bulletin cut winter crop yield forecasts by 1-4% after repeated heatwaves shortened grain filling and brought the harvest forward. Summer crop forecasts were reduced across the board, most notably for grain maize and sunflowers (6-7%), and hot, dry conditions are forecast to persist in western Europe.

- Date: 2026-07-27 · published 2026-07-27T12:00:00.000Z
- Category: weather · region EU · magnitude medium
- Page: https://feedsoft.ai/events/18282-heatwaves-impact-summer-and-winter-crops-joint-research-centre
- Commodities: [Wheat (SRW)](https://feedsoft.ai/c/WHEAT.md), [Corn](https://feedsoft.ai/c/CORN.md), [Sunflower Meal](https://feedsoft.ai/c/SUNMEAL.md)

## Why it matters

Lower European wheat, maize and sunflower yields tighten supply for feed buyers and support EU grain prices, with more downside risk to yields if the dry spell continues.

## Read by commodity

- CORN: bullish ▲
- WHEAT: bullish ▲
- SUNMEAL: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| WHEAT | 2023-11-28 | [Delayed sowing campaign of winter cereals - Joint Research Centre](https://feedsoft.ai/events/33127-delayed-sowing-campaign-of-winter-cereals-joint-research-centre.md) | +1.3% | +0.5% |
| WHEAT | 2025-10-08 | [ASAP assessment September 2025 - Joint Research Centre](https://feedsoft.ai/events/22314-asap-assessment-september-2025-joint-research-centre.md) | +1.3% | +2.8% |
| WHEAT | 2022-03-21 | [Fair start to spring for most European crops - Joint Research Centre](https://feedsoft.ai/events/42208-fair-start-to-spring-for-most-european-crops-joint-research-centre.md) | +15.8% | +5.9% |
| WHEAT | 2026-09-04 | [El Niño drives crop failure in Central America and East Africa and threatens the next season in Southern Africa, East Africa, Western South America, and Southeast Asia - Joint Research Centre](https://feedsoft.ai/events/17395-el-nino-drives-crop-failure-in-central-america-and-east-africa-and-threatens.md) | +1.4% | +0.4% |
| WHEAT | 2026-10-01 | [How this summer’s heat and drought impacted crops in Europe – in six charts](https://feedsoft.ai/events/17430-how-this-summer-s-heat-and-drought-impacted-crops-in-europe-in-six-charts.md) | -2.9% | +0.5% |
| CORN | 2022-07-25 | [Reduced yield outlook for summer crops in Europe - Joint Research Centre](https://feedsoft.ai/events/40425-reduced-yield-outlook-for-summer-crops-in-europe-joint-research-centre.md) | -0.8% | +3.7% |
| CORN | 2022-08-22 | [Summer drought keeps its grip on Europe - Joint Research Centre](https://feedsoft.ai/events/39968-summer-drought-keeps-its-grip-on-europe-joint-research-centre.md) | -0.4% | -0.5% |
| CORN | 2026-09-04 | [El Niño drives crop failure in Central America and East Africa and threatens the next season in Southern Africa, East Africa, Western South America, and Southeast Asia - Joint Research Centre](https://feedsoft.ai/events/17395-el-nino-drives-crop-failure-in-central-america-and-east-africa-and-threatens.md) | +0.5% | +1.9% |

## Sources

- joint-research-centre.ec.europa.eu: https://joint-research-centre.ec.europa.eu/jrc-news-and-updates/heatwaves-impact-summer-and-winter-crops-2026-07-27_en

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.