Garrett Holmes Denver · replies within one business day

Case file № 003 · Data product · Design system

When to be where

System

Monsoon.fyi

Client

Product build


111
cities scored
12
months, every city
90/180
Schengen rule, tracked live

Nomad List tells slow travelers where to go. Monsoon tells them when. It scores 111 cities, month by month, across weather, air quality, safety, seasonality, events, and cost — with a year-planner that tracks Schengen 90/180 compliance.

In
Six signal sets weather · air · safety · season · events · cost
111 cities twelve months each
The system
Scoring model weighted · re-weightable lenses
Out
Month strips a year at a glance
Year planner live Schengen 90/180 meter
Fig. 1 — Six signal sets, one scoring model, a year you can actually plan.

Before

  • Slow travelers plan a year of one-to-three-month stays by cross-referencing climate tables, visa rules, and vibes.
  • The Schengen 90/180 rule turns a pleasant plan into a compliance problem.

After

  • Every city gets a 12-cell month strip — one glance answers “is March good here?”
  • A ranked “this month” view, deep per-city sheets, and an editable year-builder with a live Schengen meter and shareable URLs.
  • Scoring is transparent and re-weightable: travelers can optimize for weather, cost, air, or safety.

The verdict

A full product: data model, scoring methodology, brand system, and UI — designed and shipped end to end.

SvelteKitthe application
Scored dataset111 cities × 12 months × 6 signals
Custom design systema field atlas, not a dashboard

Garrett Holmes — The Operations Ledger

Composed by hand in Denver. Replies within one business day.