If you buy frozen mango or blueberries, you've probably heard El Niño mentioned a lot this fall. And for good reason: the 2026 event is on track to be one of the strongest on record, and it's already showing up in harvest forecasts from Peru and Ecuador.
But "El Niño" headlines tend to swing between panic and shrugs. So we went to the sources: NOAA, the industry associations that track each crop, and the government agencies in the regions we source from.
In this guide, you'll see what El Niño actually is, how strong this one is, which fruits and origins are being hit, and what it could mean for your frozen fruit supply into 2027.
Let's dive right in.
Table of Contents
- What Is El Niño? (The Short Version)
- How Strong Is the 2026 El Niño?
- Mango: The Fruit Hit Hardest So Far
- Blueberries: A Strong Start, Then Three Forecast Cuts
- Mexico: It Depends on the Region
- Vietnam: Drought Risk Starting This Winter
- What This Means for Frozen Fruit Buyers
- 5 Ways to Plan Your 2027 Supply
- FAQ
What Is El Niño? (The Short Version)
El Niño is a natural climate pattern. Every few years, the surface of the Pacific Ocean along the equator gets warmer than normal, and that extra heat changes weather patterns around the world.
For fruit growers, it usually means some regions get far more rain than normal while others get hotter and drier. Either one can be a problem. Too much rain can damage orchards and roads. Too much heat at the wrong time can stop trees from flowering, and no flowers means no fruit.
The key thing to know: El Niño hits each growing region differently. That's why the impact on your supply depends on which fruit you buy and where it's grown.
How Strong Is the 2026 El Niño?
Strong, and possibly record-breaking. In its October 8 update, NOAA's Climate Prediction Center said El Niño is still strengthening and that a strong to very strong event is likely to last through January to March 2027 (NOAA CPC).
NOAA also put the chance that this becomes the strongest El Niño since records began in 1950 at 83% for October to December.
One honest caveat from NOAA itself: a strong El Niño makes the usual impacts more likely, but not guaranteed. Weather on the ground can still surprise in either direction. NOAA's next update is due November 12, 2026.
Why timing matters
Fruit trees react to weather months before harvest. Heat during flowering this year shows up as smaller crops next year. That's why analysts such as Preciso Consultoría expect the biggest supply effects in Peru in 2027, not 2026.
Mango: The Fruit Hit Hardest So Far
Mango is the clearest example of El Niño's impact this season, especially in Peru and Ecuador, two key fall and winter suppliers to the US.
| Origin | What the forecasts say | Source |
|---|---|---|
| Peru | Production estimated at 178,595 tons, vs. a normal 557,440 tons | PROMANGO, via FreshFruitPortal |
| Ecuador | Crop projected about 52% smaller than last year | National Mango Board |
| Brazil | Expected to finish about 25% higher than last year | National Mango Board |
Sources: FreshFruitPortal, Sep 29 2026; National Mango Board data reported by FreshFruitPortal, Sep 24 2026.
Here's what's behind the Peru number: El Niño disrupted flowering this year, and no flowers means no fruit. One grower in Piura and Casma told FreshPlaza that flowering in Piura, which produces 72% of Peru's mango, was only 10 to 15% (FreshPlaza).
Two details from that same report are worth knowing if you buy frozen:
- Fruit is being pulled toward fresh export. With less fruit available, much of what would normally go to Peru's local market and frozen industry is being sent to fresh export markets instead.
- A smaller crop doesn't always mean a shortage. According to the same grower, Peru can usually grow more mango than the market absorbs, so part of the drop is cushioned by that surplus.
Prices have already moved in the fresh market. USDA data shows the average US mango price rising from about $5 to $6 per box in late August to just above $10 by mid-September (FreshFruitPortal). That said, one importer quoted in the same report warned that very high prices may not hold for long, because a week or two of extra volume can push them back down. Expect swings, not a straight line.
Looking further ahead, an analysis by Preciso Consultoría projects Peru's mango volumes 49% below trend in 2027.
Blueberries: A Strong Start, Then Three Forecast Cuts
Peru is a major blueberry exporter, and its main season runs from about September to December. This year started fast, then El Niño caught up.
Proarándanos, the Peruvian blueberry industry association, has cut its fresh export forecast three times since August:
| Forecast | 2026/27 fresh exports |
|---|---|
| August | 404,000 tons |
| September | 382,000 tons |
| Early October | 366,000 tons |
| Late October | 344,000 tons |
Sources: Proarándanos forecasts reported by FreshFruitPortal and Portal Frutícola.
The latest number is 10.3% below last season's 383,000 tons. And that's with roughly 15% more hectares in production than last year, according to Proarándanos (Hortidaily). More plants, less fruit.
The season's peak week came in about 30% lower than last year's peak, and Proarándanos expects shipments for the rest of 2026 to run about 25% below the same weeks last year.
A quick note: these numbers track fresh exports. There's no public forecast for frozen blueberry volume. But fresh and frozen fruit come from the same fields, so a smaller crop is worth keeping an eye on either way.
Mexico: It Depends on the Region
Mexico is a different story, because El Niño doesn't affect the whole country the same way.
According to reporting from a seminar on El Niño and Mexican agriculture, northern Mexico tends to get slightly more rain during El Niño, while central and southern states tend to be drier (FreshPlaza). About 75% of Mexico's crops are rainfed, so rainfall matters a lot.
For now, there's no single headline number for Mexican berries or tropical fruit tied to this El Niño. The honest answer is that it will vary by region and by crop, so it's worth asking your supplier for an origin by origin update rather than assuming.
Vietnam: Drought Risk Starting This Winter
In Vietnam, El Niño usually means less rain in the center and south. Vietnam's Ministry of Agriculture and Environment has asked provinces in the south and center to prepare for a "very high risk" dry season in 2026 and 2027 (Tuoi Tre News).
The main concern is the Mekong Delta, one of Vietnam's key fruit-growing regions. Officials expect drought and saltwater pushing up the rivers to start in late December and peak from January to April. In the worst-case scenario, about 45,000 hectares of fruit trees in coastal areas could be affected.
This is a risk forecast, not a confirmed loss. But it's one to watch for any fruit sourced from southern Vietnam in the first half of 2027.
What This Means for Frozen Fruit Buyers
Putting it all together, here's what the evidence supports, and what it doesn't.
What the sources support:
- Peruvian and Ecuadorian mango crops are expected to be much smaller this winter.
- Peru's blueberry exports are now expected to fall below last season.
- Prices for affected fruit can be volatile, with sharp moves in both directions.
- Analysts expect the bigger effects in 2027, as fruit that flowered under this year's heat gets harvested and the November to April rains add disease and transport problems (FreshFruitPortal).
What's still uncertain:
- How much frozen supply specifically will tighten. Most public forecasts track fresh exports.
- How Mexico and Vietnam will play out. Both depend heavily on regional weather over the next few months.
- Exactly where prices land. Sources point to volatility, not a predictable increase.
This is where frozen fruit has a real advantage. IQF fruit is frozen at harvest and stored, so a supplier with inventory and more than one origin has more room to adjust when a harvest comes in short. It doesn't make El Niño disappear, but it gives you more options than buying fresh.
5 Ways to Plan Your 2027 Supply
You can't control the weather. But you can control how exposed your supply is to it.
Step #1: Map Your Fruit to Its Origins
List every fruit you buy and where it comes from. Mango and blueberries from Peru, and mango from Ecuador, carry the most El Niño risk right now.
Step #2: Approve a Second Origin
If a fruit can come from more than one country, get the backup origin approved by your QA team now. For example, Patagonia Foods sources mango from Mexico, Peru and Vietnam, which harvest at different times of year. Switching is easy when the paperwork is already done.
Step #3: Talk About 2027 Volumes Early
Since the bigger impact is expected in 2027, start conversations about next year's volumes sooner than usual, before short-crop fruit is allocated.
Step #4: Stay Flexible on Format
If your product allows it, being open to a different cut or format can widen your options. For blended products, for example, Bits & Pieces works just as well as uniform chunks. See our guide to frozen fruit formats.
Step #5: Ask for Regular Updates
Ask your supplier for an origin by origin update every month through spring. NOAA updates its forecast monthly too, with the next one on November 12.
Buyer Tip
When you ask about El Niño, ask "which origin is my fruit coming from, and what's your backup?" A supplier who can answer that clearly is planning for it.
FAQ
How long will this El Niño last?
NOAA says a strong to very strong El Niño is likely through January to March 2027. Vietnam's weather service has said it could continue into spring and possibly early summer 2027.
Which fruits are most affected?
So far, the clearest impacts are on mango from Peru and Ecuador and on blueberries from Peru. Other fruits and origins may be affected, but the data isn't in yet.
Will frozen fruit prices go up?
Nobody can say for sure. Fresh mango prices rose sharply in September, but importers warn prices can swing back quickly. Smaller crops tend to put upward pressure on prices, but by how much is still unclear.
Is frozen fruit safer than fresh during El Niño?
Frozen fruit gives you more flexibility, because it's harvested, frozen and stored. That means inventory can bridge some gaps. But frozen fruit still comes from the same farms, so a very short harvest affects both.
The Bottom Line
The 2026 El Niño is real, it's strong, and it's already cutting mango forecasts in Peru and Ecuador and blueberry forecasts in Peru. The biggest effects are expected in 2027. Mexico and Vietnam are still question marks that depend on regional weather.
The buyers who come through this best won't be the ones who guessed the weather right. They'll be the ones who knew where their fruit came from, had a backup origin approved, and started planning early.
Planning your 2027 frozen fruit volumes? Request a quote and our team will walk you through availability by fruit and origin.
Sources
- NOAA Climate Prediction Center, ENSO Diagnostic Discussion, October 8, 2026
- FreshFruitPortal: El Niño could push Peru's agricultural export losses to $1.5B (Sep 29, 2026)
- FreshFruitPortal: El Niño puts fall mango prices under pressure (Sep 24, 2026)
- FreshPlaza: El Niño hits Peru's mango blossoms (Aug 17, 2026)
- FreshFruitPortal: Peruvian blueberry revised down again by six percent (Sep 15, 2026)
- Hortidaily: Peru will export fewer blueberries than last season (Oct 2026)
- Portal Frutícola: Proarándanos sixth export forecast (Oct 2026, Spanish)
- FreshPlaza: El Niño raises drought risks for Mexico's fresh produce growers (Sep 8, 2026)
- Tuoi Tre News: Vietnam told to prepare for high-risk scenario as El Niño strengthens (Aug 19, 2026)
