- Info
Rhagolygon Tywydd Byw
Os ydych chi'n cynllunio dydd yn y bryniau ddylech chi hefyd ddarllen Gwasanaeth Tywydd y Mynyddoedd y Met Office a gwnewch yn si?r eich bod chi'n gyfarwydd â materiondiogelwch y mynyddoedd
Monday Morning, 06 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
13.0°C
|
14.0°C
|
11.0
|
84.9
|
1005.39
|
0
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
100 |
Gorchudd Cymylau Darfudol |
0 |
| Gorchudd Cymylau Isel |
0 |
Tymheredd y Pridd |
14.0°C |
| Gorchudd Cymylau Llwyr |
100 |
Gorchudd Eira |
0 |
Monday Afternoon, 06 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
14.0°C
|
15.0°C
|
5.9
|
98.6
|
1000.58
|
12.1
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
100 |
Gorchudd Cymylau Darfudol |
29 |
| Gorchudd Cymylau Isel |
60 |
Tymheredd y Pridd |
14.0°C |
| Gorchudd Cymylau Llwyr |
100 |
Gorchudd Eira |
0 |
Tuesday Morning, 07 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
12.0°C
|
12.0°C
|
4.3
|
99.7
|
997.861
|
0.2
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
35 |
Gorchudd Cymylau Darfudol |
0 |
| Gorchudd Cymylau Isel |
91 |
Tymheredd y Pridd |
13.0°C |
| Gorchudd Cymylau Llwyr |
94 |
Gorchudd Eira |
0 |
Tuesday Afternoon, 07 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
14.0°C
|
16.0°C
|
3.9
|
90.3
|
998.928
|
4.6
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
75 |
Gorchudd Cymylau Darfudol |
4 |
| Gorchudd Cymylau Isel |
0 |
Tymheredd y Pridd |
14.0°C |
| Gorchudd Cymylau Llwyr |
75 |
Gorchudd Eira |
0 |
Wednesday Morning, 08 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
10.0°C
|
10.0°C
|
3.7
|
99.4
|
1002.39
|
0
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
45 |
Gorchudd Cymylau Darfudol |
0 |
| Gorchudd Cymylau Isel |
0 |
Tymheredd y Pridd |
12.0°C |
| Gorchudd Cymylau Llwyr |
45 |
Gorchudd Eira |
0 |
Wednesday Afternoon, 08 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
14.0°C
|
17.0°C
|
5.7
|
89.4
|
1005.04
|
1.1
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
0 |
Gorchudd Cymylau Darfudol |
19 |
| Gorchudd Cymylau Isel |
0 |
Tymheredd y Pridd |
13.0°C |
| Gorchudd Cymylau Llwyr |
4 |
Gorchudd Eira |
0 |
Thursday Morning, 09 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
11.0°C
|
11.0°C
|
4.7
|
99.2
|
1011.76
|
0
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
0 |
Gorchudd Cymylau Darfudol |
0 |
| Gorchudd Cymylau Isel |
41 |
Tymheredd y Pridd |
12.0°C |
| Gorchudd Cymylau Llwyr |
41 |
Gorchudd Eira |
0 |
Thursday Afternoon, 09 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
14.0°C
|
18.0°C
|
5.9
|
89.3
|
1017.45
|
0.6
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
0 |
Gorchudd Cymylau Darfudol |
0 |
| Gorchudd Cymylau Isel |
0 |
Tymheredd y Pridd |
14.0°C |
| Gorchudd Cymylau Llwyr |
0 |
Gorchudd Eira |
0 |
Friday Morning, 10 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
13.0°C
|
13.0°C
|
5.7
|
99.1
|
1017.76
|
0.2
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
78 |
Gorchudd Cymylau Darfudol |
0 |
| Gorchudd Cymylau Isel |
73 |
Tymheredd y Pridd |
13.0°C |
| Gorchudd Cymylau Llwyr |
97 |
Gorchudd Eira |
0 |
Friday Afternoon, 10 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
16.0°C
|
16.0°C
|
9.0
|
99.7
|
1014.16
|
1.7
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
75 |
Gorchudd Cymylau Darfudol |
0 |
| Gorchudd Cymylau Isel |
100 |
Tymheredd y Pridd |
14.0°C |
| Gorchudd Cymylau Llwyr |
100 |
Gorchudd Eira |
0 |
Saturday Morning, 11 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
15.0°C
|
16.0°C
|
4.9
|
99.8
|
1013.83
|
6.5
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
89 |
Gorchudd Cymylau Darfudol |
0 |
| Gorchudd Cymylau Isel |
98 |
Tymheredd y Pridd |
14.0°C |
| Gorchudd Cymylau Llwyr |
100 |
Gorchudd Eira |
0 |
Saturday Afternoon, 11 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
14.0°C
|
17.0°C
|
4.0
|
89.9
|
1014.75
|
0.1
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
59 |
Gorchudd Cymylau Darfudol |
0 |
| Gorchudd Cymylau Isel |
3 |
Tymheredd y Pridd |
15.0°C |
| Gorchudd Cymylau Llwyr |
60 |
Gorchudd Eira |
0 |
Sunday Morning, 12 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
5.0°C
|
7.0°C
|
2.0
|
100
|
1017.5
|
0
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
0 |
Gorchudd Cymylau Darfudol |
0 |
| Gorchudd Cymylau Isel |
0 |
Tymheredd y Pridd |
11.0°C |
| Gorchudd Cymylau Llwyr |
0 |
Gorchudd Eira |
0 |
Sunday Afternoon, 12 September
| Tymh Isaf |
Tymh Uchaf |
Gwynt |
Lleithder |
Gwasgedd (mB) |
Glawiad (mm) |
|
14.0°C
|
17.0°C
|
4.7
|
92.5
|
1020.62
|
0.7
|
Mwy o Wybodaeth
| Gorchudd Cymylau Uchel |
0 |
Gorchudd Cymylau Darfudol |
0 |
| Gorchudd Cymylau Isel |
16 |
Tymheredd y Pridd |
13.0°C |
| Gorchudd Cymylau Llwyr |
16 |
Gorchudd Eira |
0 |
