Seasonality
Definition
Seasonality describes regularly recurring patterns in time series.
A regularly recurring pattern in a time series that is tied to calendars, cycles, or recurring events.
Simply explained
Certain fluctuations occur repeatedly, for example more requests before the fiscal year-end.
Why it matters in practice
The term is relevant for systematically improving digital visibility, qualified traffic, and content findability.
Example from business
Support demand regularly rises before the fiscal year-end and falls in summer.
Limits and pitfalls
- Confusing trend, one-time events, and seasonality or using time series that are too short.
Origin & history
Seasonal models were developed in statistics, econometrics, and sales planning.
Use in mid-sized companies
- Possible application: Support demand regularly rises before the fiscal year-end and falls in summer.
Frequently asked questions
What does seasonality mean?
A regularly recurring pattern in a time series that is tied to calendars, cycles, or recurring events. What mistakes should be avoided? Confusing trend, one-time events, and seasonality or using time series that are too short.
Sources
Source checked on 10.10.2026. Editorial application examples are hypothetical; no evidence of real customer results.
Editorially reviewed on: