Which Koppen climate has the largest variance? (most, wettest, South)

[wawa1992]

Dfb

Warmest: Graz, Austria would be near the upper end (9.4 C)
Coldest: Happy Valley-Goose Bay, Newfoundland would be near the lower end (0.0 C)
Range: At least 9.4 C

As for D*a (Dfa, Dwa, Dsa), Blagoveshchensk, Russia (Dwa) would have to be one of the coldest with 1.6 C mean.

[Jakobsli]

The largest variance using annual mean like the thread starter asked for could be in:
The Subarctic climate Dfc:

One of the coldest: Norilsk annual mean -9.4°C
https://en.wikipedia.org/wiki/Norils...al_environment
One of the warmest: Selbu: Annual mean 4.8°C
Normales et records 1981-2010 à AKHIOK - Infoclimat

Difference: 14.2°C

Dfd / Dwd is seen as an extreme version of the subarctic climate.
Oymyakon: Annual mean -15.5°C
https://en.wikipedia.org/wiki/Oymyakon

Difference Selbu - Oymyakon: 20.3°C (!)

There are several other places in Norway with annual mean ca 4.5°C that just falls into the subarctic climate. For instance, Narvik had annual mean 3.8°C using 61-90.
Drag annual mean 4.4°C
http://www.infoclimat.fr/stations-me...010&redirect=1

Is the subarctic climate the broadest climate, the one with the largest variance in annual mean?

[Mhc1985]

It's the cool dry climates...
Köppen B climates are so broad and lazy that it's ridiculous.

Let's take the BSk (Dry Steppe climate):

Los Angeles Intl Ap:
Annual average: 17.0ºC
Hottest month: 20.9ºC
Coldest month: 13.7ºC
Precipitation: 326 mm [threshold: 340 mm]

Ulaangom, Mongolia:
Annual average: -3.5ºC
Hottest month: 18.9ºC
Coldest month: -32.1ºC
Precipitation: 130 mm [threshold: 210 mm]

Difference in annual average: 20.5ºC
Difference in coldest month: 45.8ºC (!!!)
The same Köppen climate and their winters are about 45ºC apart!!!

Aayanbulag, Mongolia, is overall colder than Ulaangom, with an annual average of -4.6ºC, but its winters aren't as cold. Some places out there might be even colder and still qualify as BSk.

[Jakobsli]

Difference in mean coldest month Drag vs Oymyakon: 43.1C!

[Ethereal]

Originally Posted by Mhc1985

It's the cool dry climates...
Köppen B climates are so broad and lazy that it's ridiculous.

Let's take the BSk (Dry Steppe climate):

The cold semi-arid climates are definitely too broad. A place in Mongolia can be BSk and a place in the Australian and Moroccan deserts can also be categorized as that. It's nonsensical.

There should've been an intermediate addition for mild or "temperate" desert climates like Kalgoorlie, LA, Essaouira, etc. Hot and cold doesn't do the system any justice.

[russ8]

What about EF?
There would be some mountain in Antarctica that's tens of degrees (C) colder on average than some the more milder forms.

[Mhc1985]

Originally Posted by russ8

What about EF?
There would be some mountain in Antarctica that's tens of degrees (C) colder on average than some the more milder forms.

You're right, Vostok Station averages -55ºC and a mountain top around the Equator at the adequate height may technically average -1ºC (being the whole year about the same). Anyway, I still doubt further splittings of this climate type would be necessary.

[EverBlack]

Originally Posted by russ8

What about EF?
There would be some mountain in Antarctica that's tens of degrees (C) colder on average than some the more milder forms.

Vostok Station = -55.1 °C
Mawson Station = -11.3 °C

[grega94]

Cfb
Hottest: Quito / 15.6 C
Coldest: Lerwick / 7.4 C
Difference: 8.2 C

Wettest: Milford Sound / 6,412.2 mm
Driest: Margate 592.5 mm
Difference: 5,819.7

[Joe90]

NZ's Cfb climate manage a 9.4C difference in annual temperatures and around 11200mm difference in rainfall.