National Iced Coffee Day in the United States is generally celebrated on May 25, but in recent years many coffee brands (especially Dunkin’) have held their own “Iced Coffee Day” promotions on shifting dates in late May or June.

Key dates to know

  • Traditional U.S. “National Iced Coffee Day”
    • Commonly listed as May 25 on holiday calendars.
* Some calendars also track past observances on various May dates (e.g., May 23, May 24, May 25), showing it has moved around over the years.
  • Recent promotional Iced Coffee Days (Dunkin’)
    • Dunkin’ has run its own “Iced Coffee Day” charity event, which does not always fall on May 25.
* For example, in **2025** , Dunkin’ Iced Coffee Day is on **June 18** , with $1 from every iced coffee and cold brew donated to the Joy in Childhood Foundation.

How to think about “when is national iced coffee day”

  • As a fun food holiday , many online holiday sites and coffee blogs treat May 25 as the go‑to answer for “when is national iced coffee day.”
  • As a brand event , especially for Dunkin’, “Iced Coffee Day” can land on a different date each year (often in late May or June), announced via that brand’s own news and promos.

Quick comparison

Here is a simple view of the two main uses of the term:

[1][5][3] [7][9]
Type of “Iced Coffee Day” Typical Date Notes
General “National Iced Coffee Day” (U.S.) Usually May 25 Listed on holiday calendars and coffee-day roundups as May 25, though historically it has moved among late‑May dates.
Dunkin’ Iced Coffee Day Varies by year (e.g., June 18, 2025) Brand-specific charity promo; in 2025 it is June 18, with $1 per iced coffee/cold brew going to the Joy in Childhood Foundation.

If you’re planning ahead

  • To answer the generic question “when is national iced coffee day,” use May 25.
  • To catch deals or charity events , check that year’s announcements from big chains like Dunkin’, since their Iced Coffee Day may be on a different date such as mid‑June.

Information gathered from public forums or data available on the internet and portrayed here.