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0F | 0C
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Tywydd 15 Diwrnod - Spelthorne

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51%

Siawns o Law

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11oC

Pwynt Gwlith

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93%

Lleithder

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90

Ozone

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7.62 mm

Gwlybaniaeth

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101000 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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93%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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08:05 PM

Machlud

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7%

Siawns o Law

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11oC

Pwynt Gwlith

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85%

Lleithder

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107

Ozone

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1.25 mm

Gwlybaniaeth

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102300 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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62%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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08:05 PM

Machlud

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2%

Siawns o Law

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12oC

Pwynt Gwlith

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83%

Lleithder

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98

Ozone

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0 mm

Gwlybaniaeth

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102900 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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66%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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08:05 PM

Machlud

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2%

Siawns o Law

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13oC

Pwynt Gwlith

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83%

Lleithder

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98

Ozone

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0 mm

Gwlybaniaeth

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102400 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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57%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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08:05 PM

Machlud

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11%

Siawns o Law

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14oC

Pwynt Gwlith

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85%

Lleithder

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102

Ozone

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1.7 mm

Gwlybaniaeth

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102300 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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30%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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08:05 PM

Machlud

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5%

Siawns o Law

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12oC

Pwynt Gwlith

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75%

Lleithder

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101

Ozone

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0 mm

Gwlybaniaeth

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102700 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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10%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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08:05 PM

Machlud

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3%

Siawns o Law

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13oC

Pwynt Gwlith

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82%

Lleithder

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99

Ozone

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0 mm

Gwlybaniaeth

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103100 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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76%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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5%

Siawns o Law

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11oC

Pwynt Gwlith

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74%

Lleithder

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98

Ozone

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0 mm

Gwlybaniaeth

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103100 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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12%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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1%

Siawns o Law

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11oC

Pwynt Gwlith

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75%

Lleithder

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106

Ozone

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0 mm

Gwlybaniaeth

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103000 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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11%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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0%

Siawns o Law

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12oC

Pwynt Gwlith

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79%

Lleithder

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100

Ozone

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0 mm

Gwlybaniaeth

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102900 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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42%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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3%

Siawns o Law

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12oC

Pwynt Gwlith

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78%

Lleithder

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103

Ozone

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0 mm

Gwlybaniaeth

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102800 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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10%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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3%

Siawns o Law

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11oC

Pwynt Gwlith

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75%

Lleithder

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91

Ozone

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0 mm

Gwlybaniaeth

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102800 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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35%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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11%

Siawns o Law

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13oC

Pwynt Gwlith

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75%

Lleithder

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107

Ozone

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0.25 mm

Gwlybaniaeth

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102500 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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13%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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17%

Siawns o Law

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13oC

Pwynt Gwlith

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77%

Lleithder

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99

Ozone

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0.13 mm

Gwlybaniaeth

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102200 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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24%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

Dydd Llun - 18
Dydd Mawrth - 19
Dydd Mercher - 20
Dydd Iau - 21
Dydd Gwener - 22
Dydd Sadwrn - 23
Dydd Sul - 24
Dydd Llun - 25
Dydd Mawrth - 26
Dydd Mercher - 27
light rain
light rain
light rain
broken clouds
broken clouds
light rain
sky is clear
broken clouds
few clouds
few clouds
Tymheredd Uchaf
Tymheredd Isafswm
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3.99 mm
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7.62 mm
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1.25 mm
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0 mm
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0 mm
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1.7 mm
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0 mm
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0 mm
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0 mm
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0 mm
Gwlybaniaeth
Siawns o Law

18/05/2026

14o
rain
Glaw ysgafn
8oC / 14oC | teimlo fel 13oC
100% glaw | 0.45 mm
Lleithder 65%
Gweledigaeth 6.21 miles
Cyflymder y Gwynt 11.99 mph
Mynegai UV 3.28
Codiad Haul / Machlud Haul 05:06 AM / 08:50 PM
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