tundra, subtropical, temperate... or?

[wawa1992]

Temperate. There would be potential for trees because the warmest month tree line would be very low in such a climate, probably 8 C / 46.4 F or so...

[AdriannaSmiling]

Maritime puke; there are climates in the world kinda like it like Point Reyes, California.

[Isleofpalms85]

I would say that this climate would be Non existent. If I had to choose from the following you have given me I would choose cool temperate.

[Joe90]

If it actually existed, it could only be high altitude equatorial. Only equatorial climates could have such a low temperature variation.

[Hells Kitchen]

According to my personal climate rating system, this climate is rated "ass".

[AdriannaSmiling]

Originally Posted by Joe90

If it actually existed, it could only be high altitude equatorial. Only equatorial climates could have such a low temperature variation.

Eureka, CA is at 40 N and has very, very little seasonal variation with an all time record high in July being lower than any other all time record high for any other month. Eureka, California - Wikipedia, the free encyclopedia

[Mhc1985]

Originally Posted by Joe90

If it actually existed, it could only be high altitude equatorial. Only equatorial climates could have such a low temperature variation.

This.
Tropical Highland.
The closest would an equatorial peak, constantly beaten by the winds and isolated from virtually any warming/cooling surface which could provide a bigger daily thermal range.

Look at this place:
COTOPAXI, ECUADOR Weather History and Climate Data

[Derek41]

Very high elevation on the Equator (eg near Mt Cameroon), but probably still just temperate as opposed to subpolar.

[Joe90]

Originally Posted by AdriannaSmiling

Eureka, CA is at 40 N and has very, very little seasonal variation with an all time record high in July being lower than any other all time record high for any other month. Eureka, California - Wikipedia, the free encyclopedia

Eureka has an impressively low 5C of seasonal range (lowest in NZ is about 6.2C), but still quite a bit more than the OPs climate. July in Eureka having the coldest record maximum is weird. Despite being at the same latitude as Eureka, and being right on the coast, I don't feel much similarity between my climate and Eureka's. When I visited Eureka (several times), it reminded of the southwest of the South Island.

[Joe90]

Originally Posted by Mhc1985

This.
Tropical Highland.
The closest would an equatorial peak, constantly beaten by the winds and isolated from virtually any warming/cooling surface which could provide a bigger daily thermal range.

Look at this place:
COTOPAXI, ECUADOR Weather History and Climate Data

Yep, that's what I'm talking about.