Comparing Tucson, AZ, Encarnación, Paraguay, and Barranquilla, Colombia

February 25, 2025

A chat with ChatGPT

You said:

When looking at the globe on Google Earth and comparing the locations of Tucson, AZ (approx. 32 degnorth) and Encarnaction, Paraguay (approx. 27 deg south) - It's interesting comparing the climates. I've lived in bothcities and it seems Tucson is actually a more mild year-round on average climate than Encarnacion.

ChatGPT said:

That is an interesting observation! Looking purely at latitude, Tucson and Encarnación are insomewhat similar positions relative to their respective hemispheres. However, their climates are shaped by vastlydifferent factors. Comparing Climates: Tucson vs. Encarnación

Desert vs. Humid Subtropical

Tucson has a hot desert climate (Köppen: BWh), meaning it experiences extreme temperatureswings, low humidity, and little rainfall. The Sonoran Desert climate allows for very hot summers but relatively mild,dry winters.

Encarnación has a humid subtropical climate (Köppen: Cfa), meaning it has hot, humidsummers and mild but damp winters with more consistent rainfall.

Temperature Ranges

Tucson: Summers often exceed 40°C (104°F) but with very low humidity. Winters can be cool,with lows occasionally dipping near freezing.

Encarnación: Summers are consistently hot (often 35-40°C / 95-104°F) but with highhumidity, making it feel much hotter. Winters rarely drop below 10°C (50°F) but can be cloudy and damp.

Seasonality Differences

Tucson has two primary seasons: a hot, dry period (April–June), followed by a monsoon season(July–September), bringing summer thunderstorms. Fall and winter are dry, sunny, and relatively cool.

Encarnación has four seasons, but its summers are long, wet, and humid, while winters aremild, damp, and cloudy.

Humidity & Perceived Comfort

Tucson’s dry air makes even high temperatures feel more tolerable, and nights cool offsignificantly.

Encarnación’s high humidity leads to uncomfortably high heat indices in the summer, andnighttime cooling is limited.

Rainfall

Tucson: ~~280 mm (11 inches) per year, mostly from monsoons.

Encarnación: ~~1,500 mm (59 inches) per year, spread throughout the year.

Why Tucson Feels More Mild

While Tucson’s summer highs are extreme, its low humidity, wide diurnal temperature swings,and mild winters make it more comfortable year-round. Encarnación’s humidity, persistent summer heat, andwarm, damp winters make it feel more oppressive overall, despite lower absolute temperature highs.

It’s a good example of why latitude alone doesn’t determine climate—humidity,elevation, oceanic influences, and air circulation patterns all play major roles.

You said:

The historical data for temps in Encarnaction are not realistic to the temps being experienced now.For example, most days this month have seen temps of around 40C and as high as 44C with humidity in the mid-50spercent.

ChatGPT said:

That’s a huge discrepancy from historical climate data! If Encarnación is now regularlyhitting 40-44°C with mid-50% humidity, that makes for an extremely oppressive heat index. Those conditions wouldfeel closer to 50°C+ (122°F+) in terms of perceived heat.

Possible Reasons for the Data Mismatch

Climate Change & Warming Trends

Paraguay, like much of South America, has seen rising temperatures over the past two decades.Historical data often averages decades of past temperatures, but real-time conditions are reflecting more extreme heatwaves.

Encarnación, in particular, might be experiencing stronger heat waves than previouslyrecorded.

Outdated or Incomplete Data Sets

Many climate databases use long-term averages (e.g., 30-year norms), which don’t reflectrecent anomalies.

Some sources may under-report extreme highs if local weather stations aren’t properlyupdated.

Urban Heat Island Effect (UHI)

Encarnación has modernized significantly, with more concrete, asphalt, and glass structures.These absorb and retain heat, keeping urban areas much warmer, especially at night.

More Frequent Heatwaves & El Niño Effects

This year’s El Niño has led to hotter-than-normal conditions across much of SouthAmerica, especially in Argentina and Paraguay.

South America, in general, is seeing more frequent and prolonged heat waves in recent years.

Comparing to Tucson’s Recent Weather

Interestingly, Tucson’s weather data is more consistent over time. While Tucson regularly sees40°C+ in summer, it has maintained predictable cooling patterns at night due to the desert climate.Encarnación, on the other hand, lacks significant cooling due to humidity retention.

If Encarnación is now seeing regular 40-44°C temperatures, it’s effectivelybecoming as hot as desert cities but without the relief of dry air or nighttime cooling. That makes it feel worse thanTucson, even if historical climate data would suggest otherwise.

Would you like me to check real-time weather anomalies or climate records for Encarnación tosee if this is officially recognized as a heatwave event?

You said:

It is definitely worse here in Enc. Nights are normally in the high-mids to high 20s. When I livedin Tucson I could easily go hiking, cycling, running, just about every day in the afternoons and have no problems,because of the lack of humidity. Here, though, just walking and I'm sweating like a dog. The humidity isn't oppressivelike in the Amazon region, but still, it's very noticable.

ChatGPT said:

Yeah, that checks out. The biggest killer in Encarnación's heat isn’t just the hightemps—it’s the humidity trapping the heat and preventing your body from cooling properly.

In Tucson, even at 40°C (104°F), you could still hike, cycle, or run because:

The air is so dry that sweat evaporates instantly, cooling you efficiently.

Nights drop significantly, sometimes below 20°C (68°F) even after brutal daytime highs.

Shade actually helps because there’s no humidity keeping heat trapped around you.

In Encarnación, with 40-44°C and 50+% humidity:

Sweat stops working effectively—it just lingers, making you feel hotter.

Nights stay in the high 20s (80°F+), so there’s no real cooling.

The heat index (what it feels like due to humidity) is pushing 50°C (122°F) or more.

Even a short walk is exhausting because your body is overheating faster than it can cool down.

Not Amazon-Level Oppressive, But Still Brutal

It’s interesting you mention it’s not quite Amazon-level. That makes sense becauseplaces like Manaus or Iquitos have both extreme heat and near 100% humidity—so your sweat never evaporates.Encarnación is slightly better, but at 50-60% humidity, you’re still sweating buckets and losing energyway faster than in Tucson.

This is exactly why people often say “Dry heat is way easier than humid heat.” Tucson isan oven, but Encarnación is a sauna, and that sauna effect is what makes it so brutal.

Would You Say Encarnación Feels Worse Than Coastal Barranquilla? Since you lived in Barranquilla for years,how would you compare the two?

Barranquilla is hot and humid year-round, but it also has constant breezes that help.Encarnación, being inland, might not get those breezes as reliably.

You said:

B'quilla is hot and has higher humidity, but I never saw it over 34 deg C. Yes, it was above 60percent humidity, though.

ChatGPT said:

That’s a key difference—Barranquilla has high humidity but doesn’t hit the extremetemps that Encarnación is getting now.

Why Barranquilla Felt More Manageable Despite Higher Humidity:

Lower Peak Temperatures

B'quilla rarely goes over 34°C (93°F), while Encarnación is regularly hitting40-44°C (104-111°F).

Even with higher humidity (60-80%), Barranquilla's lower absolute temperature kept the heat indexsomewhat under control.

Coastal Breezes

Barranquilla has steady ocean winds that provide constant air movement, making it feel cooler thanit actually is.

Encarnación, being inland, doesn’t have this natural ventilation—so heat lingerslonger.

Nighttime Cooling is Similar

Both cities have warm nights in the high 20s°C (mid-80s°F), which means no real overnightrelief. But B'quilla’s humidity is constant, so the body adapts better over time, while Encarnación swingsbetween extreme heat and humidity, making it feel more exhausting.

Encarnación is Worse

Even though Barranquilla has higher humidity, its lower temps and breezes make it much more livablethan Encarnación.

Encarnación’s mix of extreme heat and moderate humidity makes it one of the mostexhausting climates to be active in.

In Barranquilla, you sweat nonstop, but at least you don’t feel like you’re bakingalive.

In Encarnación, you’re both sweating AND overheating, with no breeze to help.

So yeah, if I had to rank them:
Tucson (dry but tolerable)
Barranquilla (sweaty but livable)
Encarnación (brutal heat & humidity) ??

I imagine you’re spending a lot of time indoors or near a fan these days. ??

You said:

Being acclimated to the higher temps - 7+ years in Tucson, 9+ years in B'quilla, and recentlyspending most of the past 2 years backpacking throughout South America, I don't find it terrible here in Enc, justsweaty. In my apartment I have the windows open all day and all night and in the 2+ months here I turned on the A/Conly twice, and those two times were at night. But, I think, of the 3 mentioned locations, living in the AtlanticoDepto of Colombia would be the best choice, for me. I haven't yet decided where to make my home, maybe there, maybein northern Peru, which I also like very much.

ChatGPT said:

You’ve got serious heat endurance—most people would be melting in Encarnación,but for you, it’s just “sweaty.” That’s impressive!

Why Atlántico Dept. (Barranquilla & Surroundings) Might Be Your Best Fit

Heat & Humidity You’re Already Acclimated To

After nearly a decade in Barranquilla, you know exactly what to expect.

Never extreme heat (rarely above 34°C) but always humid—yet livable thanks to coastalbreezes.

Your comfort level in Encarnación suggests Barranquilla’s climate would be eveneasier.

Breezier & Less Oppressive Than Encarnación

As you pointed out, Encarnación lacks the constant breeze that Barranquilla has, making itfeel stagnant and heavy in comparison. Even though Barranquilla is humid year-round, the wind helps make it moremanageable.

Affordable & Familiar Territory

You already speak Spanish well, know the Colombian lifestyle, and have experience living in theregion.

Cost of living is manageable, with plenty of options for apartments, food, and daily life.

Access to big city amenities (Barranquilla), while smaller towns nearby (Santa Marta, Baranoa,Puerto Colombia, etc.) could be a quieter alternative

.

Strategic Location for Travel

Direct access to flights, buses, and even boats makes travel easy throughout Colombia andinternationally. If you ever need a break from the heat, the coffee region and the Andes aren’t far away.

Why Northern Peru is Still a Strong Contender

You like the vibe and have good memories there.

More varied geography—coastal towns, mountains, and jungle all within reach.

Still warm, but with more diversity in climate depending on where you settle.

If consistency, warmth, and familiarity are key ? Atlántico Dept. is the safer bet.

If exploration and new experiences appeal more ? Northern Peru might win out.

Sounds like it’s going to come down to what kind of lifestyle you’re envisioninglong-term. Either way, you’ll be sweating, but at least it’ll be on your terms.