Y gwahaniaeth rhwng diwygiadau o "Mwyaren"

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Tagiau: Golygiad drwy declyn symudol Golygiad ar declun symudol (ap) iOS app edit
Tagiau: Golygiad drwy declyn symudol Golygiad ar declun symudol (ap) iOS app edit
[[File:Newid dros amser yn y dyddiad cyntaf “hel mwyar duon” yng Nghymru’n bennaf.jpg|thumb|Newid dros amser yn y dyddiad cyntaf “hel mwyar duon” yng Nghymru’n bennaf]]
Dyma'r meteorolegydd Huw Holland Jones:
:</small>''1940 was a good summer over Wales & Eng. June was very sunny (311hrs sun at Holyhead) & dry (19mm), July had av rain & above av. sun . Aug was very dry with av sun..so I suspect the early warmth & sun brought on the blackberries and the July rain helped them swell. I think blackberries seem to be ripening later in the last 5 summers (5 poor summers in a row), because my memory is of first blackberries usually appearing by end July.''</small>
 
==References==
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