N'ad i'r gwyntoedd cryf, dychrynllyd,
  Gwyntoedd oer y gogledd draw,
Ddwyn i'm hysbryd gwan, trafferthus,
  Ofnau am ryw ddrygau ddaw;
    Tro'r awelon
Oera'u rhyw yn nefol hin!

Gwna 'mi weld y byd a'i stormydd
  Yn diflannu cyn bo hir; 
Doed i'r golwg dros y bryniau 
  Ran o'r nefol, hyfryd dir;
    Im gael llonydd 
Gan holl derfysgiadau'r llawr.

Grym fy nwydau sy'n fy mhoeni,
  Grym f'euogrwydd a fy mai:
Methu eilwaith beidio pechu,
  Eilwaith methu 'difarau:
    I 'ngwaredu
O na welwn fore wawr!

Disgwyl 'rwyf drwy hyd yr hirnos,
  Disgwyl am y bore-ddydd;
Disgwyl clywed pyrth yn agor,
  A chadwynau'n mynd yn rhydd;
    Disgwyl golau 
Pur yn nh'wyllwch tewa'r nos.

Daw, fe ddaw y wawr wen, olau
  Y bo'r cwmwl du yn ffoi;
Tarth a niwl yn cyd-ddiflannu
  A oedd wedi cydgrynhoi:
    Dyma'r oriau 
'Rwy'n eu gweled draw drwy ffydd.

gwelir:
  Dysgwyl 'rwyf drwy hyd yr hir-nos
  Mi feddyliais yn y bore

Do not let the strong, terrifying winds,
  The cold winds of the distant north,
Bring to my weak, troubled spirit,
  Fears about the kind of evils to come;
    May the breezes turn
Of the coldest kind into heavenly weather!

Make me see the world and its storms
  Disappearing before long;
May there come to view across the hills
  Part of the heavenly, pleasant land;
    That I may have peace
From all the tumults of below.

Strong my passions which assail me,
  Strong my guilt and my sin:
Failure again to stop sinning,
  Again failing to repent:
    To deliver me
O that I would see there the break of day!

I am waiting throughout the long night,
  Waiting for the morning of day;
Waiting to hear the portals opening,
  And the chains becoming free;
    Waiting for light
Pure in the thickest darkness of the night.

It comes, the bright, light dawn comes
  That the black cloud may flee;
Smoke and cloud disappearing together
  Which had gathered together:
    Here are the hours
I can see them yonder through faith.

I am through the lone night waiting,
  For the dawning of the day,
When my prison door is opened,
  When my fetters fall away.
    O come quickly,
  Happy day of Jubilee!

Let me still be meekly wakeful,
  Trusting that to all my woes,
By thy mighty hand, Redeemer,
  Shall be given a speedy close:
    Keep me watching,
  For the joyful Jubilee.

also:

While the stormy winds are blowing

tr. Howell Elvet Lewis [Elfed] 1860-1953
Sweet Singers of Wales 1889