Octapent raingauge encrusted with snow.

Llansadwrn (Anglesey) Weather:
Graphical data for 2026

 Logo: Llansadwrn Weather - Melin Llynnon, Ynys Môn.


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Daily mean temperature 2026

Daily mean temperature at Llansadwrn (Anglesey): © 2026 D.Perkins.

Daily maximum and minimum temperatures 2026

Daily maximum and minimum temperatures at Llansadwrn (Anglesey): © 2026 D.Perkins.

Daily temperature of the soil at 30 cm depth 2026

Daily soil temperature at 30 cm at Llansadwrn (Anglesey): © 2026 D.Perkins.

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Daily rainfall 2026

Daily rainfall at Llansadwrn (Anglesey): © 2026 D.Perkins.

Monthly rainfall 2026

Monthly rainfall at Llansadwrn (Anglesey): © 2026 D.Perkins.

Accumulated monthly rainfall 2026

Accumulated monthly rainfall at Llansadwrn (Anglesey): © 2026 D.Perkins.

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Soil moisture percentage 2026

Soil moisture percentage under grass: © 2026 D.Perkins.

Net primary production of grass 2026

Net primary production and growth of the grass ecosystem at Llansadwrn weather station: © 2026 D.Perkins.


Accumulated yields of grass 2004-2025Net primary dry matter production of grass 2004-2024: © 2026 D.Perkins.

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Potential evapotranspiration and water balance in 2026

Potential evapotranspiration and water balance at Llansadwrn (Anglesey): © 2026 D.Perkins.

Atmospheric msl pressure 2026

Atmospheric msl pressure at 0900 GMT at Llansadwrn (Anglesey): © 2026 D.Perkins.

Daily global solar radiation (MJ m -2) 2026

Daily solar radiation in Llansadwrn (midnight to midnight): © 2026 D.Perkins.

Monthly sunshine at Valley (Anglesey) 2026

Monthly sunshine at Valley (Anglesey). Source SYNOP reports RAF Valley.

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Acknowledgement

The Met Office at RAF Valley kindly supplied observational data from 1942 to 2011. Current data (provisional) are gathered from SYNOP reports and METAR.

Designed and written by Donald Perkins © 2026

Page first published May 2026.

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