A humane person is benevolent in treating fellow humans or helpless animals;
http://dictionary.reference.com/browse/human

I never thought that I would cite Opus Dei in a Kudoz forum, but...Hablar de tono humano es similar a hablar de educación. Una persona con un tono humano elevado, quiere decir que cuida los detalles de educación y corrección.
¿Y por qué hablar de tono humano? Para vivir la caridad hacia los demás. Todos estos detalles de educación redundan en beneficio de los que nos rodean y les hacen la vida más agradable. No es para ser una persona "finolis" o "refinada", sino para tener detalles de con los demás. http://www.opusdeialdia.org/200708031746/¿que-es-el-tono-hum...

Some ideas...

someone people can relate to

I think you may need a few words in English to describe this. I was also thinking of "gentlemanly" (if a man) or kind/affable/personable other words that might fit. Well-mannered, dignified, upstanding are other words that spring to mind. Really a pity you didn't give more context about this person.

there is quite a lot of material in this link to describe this concept with excerpt:

"Podemos definir “tono humano” como el estilo del carácter propio del hombre que se refleja en las formas de conducta, en la forma individualmente considerada, o en su relación con la sociedad donde vive el hombre.

Así, cuando una persona sabe respetar a los demás y a sí misma sin hacer mal a nadie y atendiendo a las personas que le rodean, creando su propio entorno, decimos que esa persona tiene un tono humano alto. .."

www.yoinfluyo.com/index.php?... - Mexico - Translate this page

26 Abr 2009 – Al practicar “el tono humano”, nos damos cuenta que no es suficiente conocer el concepto para lograr que una persona esté bien educada.


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Note added at 2 hrs (2012-02-03 02:20:58 GMT)
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and I see Julie just posted "personable", one of the words I had in mind.

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Note added at 3 hrs (2012-02-03 02:22:57 GMT)
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try full link this time

http://www.yoinfluyo.com/index.php?option=com_content&view=a...

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Note added at 3 hrs (2012-02-03 02:26:07 GMT)
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yes, link works now.

"empathetic" another word perhaps for this

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Note added at 3 hrs (2012-02-03 02:58:25 GMT)
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hope they help: a difficult concept certainly to translate.
"considerate" (of others) yet another word that's come to mind

it means he has all the human qualities or values that make a fine person, a person to be admired, a good "example" of what it is to be a human being

gra·cious (grshs)
adj.
1. Characterized by kindness and warm courtesy.
2. Characterized by tact and propriety: responded to the insult with gracious humor.
3. Of a merciful or compassionate nature.
4. Condescendingly courteous; indulgent.
5. Characterized by charm or beauty; graceful.
6. Characterized by elegance and good taste: gracious living.
7. Archaic Enjoying favor or grace; acceptable or pleasing.

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Note added at 9 hrs (2012-02-03 09:21:38 GMT)
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Francis bacon said, “If a man be gracious and courteous to strangers, it shows he is a citizen of the world”. That is the importance that graciousness can have in a person’s life. Graciousness is all about how you make the people around you feel. Pleasing and affectionate are the hallmarks of a gracious person. People are not born with gracious behavior, it must be taught and absorbed. Gracious behavior depends on the upbringing and the environment. Through constant practice, it can be inculcated into your way of life. Gracious behavior, if taught from the childhood can lead towards the development of a successful human being.
http://lifestyle.iloveindia.com/lounge/how-to-be-gracious-70...

Spanish term (edited): Es una persona con mucho tono humano.

This just occurred to me, so thought I'd post it.

From Babylon English:

tune in (Slang) become more knowledgeable about something, make more aware.
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ENGLISH IDIOMS 2nd EDITION:

tuned in - able to understand, on the same wavelength. If you're tuned in, you know who I've been talking about.
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Merriam-Webster Collegiate dictionary:

Tune in: to associate oneself with what is happening or one's surroundings.

yes, I know this is a French borrowing, but it's also now widely accepted in English, and expresses something that no native English term quite captures; it also seems to fit your rather elusive definition:

Savoir faire
Meaning
The instinctive ability to know how to deal with any situation that arises.

Origin
The literal translation from the French is 'know how'. It is first seen in English in the writing of that incorrigible coiner of phrase - Sir Walter Scott, Guy Mannering, 1815:

"He had great confidence in his own savoir faire."


savoir-faire
noun /ˌsæv.wɑːˈfeər//-ˈfer/ n [U] formal Definition
the ability to do and say the right thing in any social situation
She possesses great savoir-faire.