Methodology

Our Editorial Philosophy

Our guides are built for travelers who need to make decisions, not for readers who want inspiration. We optimize for clarity, accuracy, and actionable detail — real monthly climate, what to wear, what to leave behind, and what's genuinely worth packing.

How We Rank Options

When we rank clothing, layers, or packing items within a guide, we use the following criteria — in this order of priority:

1. 1

   Usefulness for the Reader's Decision

   Does this item help the traveler pack right for the season? Vague 'nice to have' picks are cut.

2. 2

   Climate Fit & Accuracy

   Does the recommendation match the destination's real monthly weather and the details we've documented?

3. 3

   Documented Sources

   Is there an attributable source for a venue rule or numerical climate claim?

4. 4

   Value for Traveler Budget

   Does the item earn its place in a carry-on? We flag both overpacking traps and genuinely worth-it picks.

5. 5

   Versatility vs. Specialization Tradeoff

   We explain the tradeoff explicitly — some travelers want versatile layers, some want specialized gear. Neither is wrong.

What We Don't Rank By

Understanding what we explicitly exclude matters for trust.

• ✗Affiliate commission rates — high-commission products get no ranking boost
• ✗PR pitches and media requests from brands
• ✗Social media popularity or influencer endorsements
• ✗Paid placement of any kind

Where Our Data Comes From

Our recommendations synthesize multiple signal types. We prioritize signals in this order:

1. 1. Official climate data

   National weather services and long-term monthly climate records

2. 2. Long-term climate data

   1991–2020 climate averages for every city we cover, computed from 30 years of daily Copernicus ERA5-Land and ERA5 reanalysis data (via Open-Meteo open data, CC BY 4.0) and adjusted to each city's elevation — split into early, mid and late month so advice matches real travel dates

3. 3. Government tourism boards

   Official advisories, dress-code norms, and event calendars

4. 4. Reputable published journalism

   Named authors at established publications with editorial standards

Handling Uncertainty

When we can't verify a detail, we say so. Phrases like 'reportedly', 'according to [source]', or 'unverified as of [date]' appear in our guides deliberately. We'd rather be honest about uncertainty than pretend to know what we don't.