Climate Twins
ClimateShared BiomesCross-Continental

Climate Twins

A first-pass set of cities that keep showing up in WhyThere’s cross-continental climate analog stories.

Some places feel strangely familiar even when they sit on opposite sides of the planet. Climate Twins is a first-pass collection for those pairings: cities that rhyme environmentally, even when culture, language, and geography do not.

Photo by Svetlana Gumerova · Lisbon, Portugal

Sponsor fit

Strong fit for tourism boards, international regions, and brands leaning into uncanny environmental familiarity rather than generic destination marketing.

Good for partners who want context-specific placement instead of generic city inventory.

Cities included

7

Curated shared-biome cities in this first pass

Article comparisons

3

Shared-biome stories currently feeding this set

Typical sunny year

281 days

Median annual sunny days across this set

Typical annual rain

56 in

Median yearly rainfall across current matches

Collection lens

What defines this collection

Collections are browse lenses, not rankings. These notes explain why these cities show up here in the first place.

This is intentionally curated from existing WhyThere shared-biome stories rather than pretending we already have a complete global climate-similarity model.

The cities here are grouped because they repeatedly show up in cross-continental climate analog comparisons: same moisture pattern, same seasonal timing, or the same uncanny visual/environmental feel.

Expect this one to expand later as the international dataset and similarity logic get stronger.

Related Reading

Stories connected to this collection

Some of these stories use the same climate or decision lens directly. Others zoom in on one city pair, coast, or tradeoff that overlaps with this collection.

Cities in this collection

Showing 7 curated cards drawn from 7 current matches.

This is a curated climate collection, not a fake global similarity engine. It groups the cities that already anchor WhyThere’s shared-biome and climate-rhyme comparisons: temperate rainforests, Mediterranean cousins, and Atlantic near-twins.

Portland

Oregon

Transit Score is 60 or higher.Relative humidity stays elevated based on the annual average.FEMA wildfire risk is minimal.
Comfort
73/100
Great
Sunny Days
262
days/yr
Avg Humidity
75%
annual RH
Avg High
63°F
typical
Population
646k
Density 4,840/mi²
View City Page

Valdivia

Valdivia, Chile

Composite climate score built from temperature fit, humidity fit, seasonal swing, and penalties for long stretches of extreme heat or cold. Higher is easier year-round.Sunny days are 280+ per year.Relative humidity stays elevated based on the annual average.
Comfort
86/100
Excellent
Sunny Days
281
days/yr
Avg Humidity
82%
annual RH
Avg High
60°F
typical
Population
N/A
Estimated residents
View City Page

Babol

Māzandarān, Iran

Sunny days are 280+ per year.Relative humidity stays elevated based on the annual average.
Comfort
74/100
Great
Sunny Days
298
days/yr
Avg Humidity
77%
annual RH
Avg High
73°F
typical
Population
N/A
Estimated residents
View City Page

San Francisco

California

Composite climate score built from temperature fit, humidity fit, seasonal swing, and penalties for long stretches of extreme heat or cold. Higher is easier year-round.Walk Score is 70 or higher.Transit Score is 60 or higher.
Comfort
91/100
Excellent
Sunny Days
240
days/yr
Avg Humidity
79%
annual RH
Avg High
62°F
typical
Population
851k
Density 18,229/mi²
View City Page

Lisbon

Portugal

Composite climate score built from temperature fit, humidity fit, seasonal swing, and penalties for long stretches of extreme heat or cold. Higher is easier year-round.Sunny days are 280+ per year.Relative humidity stays elevated based on the annual average.
Comfort
94/100
Excellent
Sunny Days
333
days/yr
Avg Humidity
75%
annual RH
Avg High
71°F
typical
Population
2k
Estimated residents
View City Page

Ponta Delgada

Portugal

Composite climate score built from temperature fit, humidity fit, seasonal swing, and penalties for long stretches of extreme heat or cold. Higher is easier year-round.Sunny days are 280+ per year.Relative humidity stays elevated based on the annual average.
Comfort
91/100
Excellent
Sunny Days
326
days/yr
Avg Humidity
82%
annual RH
Avg High
68°F
typical
Population
N/A
Estimated residents
View City Page

Reykjavik

Reykjavíkurborg, Iceland

Relative humidity stays elevated based on the annual average.
Comfort
43/100
Challenging
Sunny Days
158
days/yr
Avg Humidity
80%
annual RH
Avg High
44°F
typical
Population
N/A
Estimated residents
View City Page

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City directory

This directory exposes all 7 current city links in the collection. If a place here looks interesting, jump straight into its full profile.