Weather conditions in Pentraeth
Data collected using a Weatherflow Tempest weather station and Cumulus software. This page is usually updated every 10 minutes. All data back to November 2005, with readings every ten minutes, are archived on-line at Weather Underground. Click here for more information.
Go to: Graphs, 5 day forecast, Monthly summaries, Weather links.
Almanac
| Dawn: | Sun Rise: | Moon Rise: |  Visible % |
|||
| Dusk: | Sun Set: | Moon Set: | ||||
| Daylight: | Day Length: | Moon Phase: | ||||
| Current conditions: | ||||||
Conditions at local time
| Temperature and Humidity | |||
| Temperature | Dew Point | ||
| Windchill | Humidity | % | |
| Heat Index | Apparent TemperatureFeels Like | ||
| Temp change last hour | |||
| Rainfall | |||
| Rainfall Today | Rainfall Rate | /hr | |
| Rainfall This Month | Rainfall This Year | ||
| Rainfall Last Hour | Last rainfall | ||
| Rainfall Since Midnight | Rainfall Last 24 Hours | ||
| Wind | |||
| Wind Speed (gust) | Wind Speed (avg) | ||
| Wind Bearing | ° | Beaufort | |
| Wind Variation (last 10 minutes) | From ° to ° | ||
| Pressure (sea level) | |||
| Barometer | /hr | ||
| Solar | |||
| Solar Radiation | W/m² | Evapotranspiration Today | |
| UV Index | |||
Page updated .
Graphs and Past Data
These are now on separate pages:
Graphs of current and recent weather
Tables of past highs, lows & averages
Monthly Summaries
Monthly Mean Temperature (°C) |
||||||||||||
| Jan | Feb | Mar | Apr | May | Jun | July | Aug | Sep | Oct | Nov | Dec | |
| 2002 | 16.5 | 15.6 | 14.0 | 8.6 | 9.5 | 7.9 | ||||||
| 2003 | 6.2 | 5.2 | 7.3 | 10.3 | 11.9 | 15.2 | 16.7 | 16.5 | 13.9 | 9.8 | 9.0 | 6.2 |
| 2004 | 6.8 | 6.2 | 7.1 | 9.7 | 11.9 | 14.5 | 15.1 | 16.6 | 14.8 | 11.0 | 9.6 | 7.6 |
| 2005 | 8.0 | 5.6 | 8.4 | 8.9 | 11.3 | 14.9 | 15.8 | 15.5 | 14.6 | 12.8 | 7.3 | 6.7 |
| 2006 | 5.4 | 5.5 | 5.5 | 8.7 | 11.4 | 15.2 | 17.7 | 15.3 | 15.6 | 12.8 | 9.3 | 7.7 |
| 2007 | 8.1 | 6.5 | 7.4 | 11.0 | 11.9 | 14.5 | 14.8 | 15.1 | 13.8 | 11.2 | 9.4 | 6.2 |
| 2008 | 7.5 | 6.1 | 6.9 | 8.3 | 13.5 | 13.5 | 15.8 | 15.6 | 13.4 | 10.5 | 8.4 | 5.2 |
| 2009 | 4.9 | 5.4 | 7.2 | 9.6 | 11.1* | 14.5 | 15.7 | 15.9 | 13.7 | 12.1 | 9.1 | 4.5 |
| 2010 | 3.4 | 3.5 | 5.8 | 8.8 | 11.0 | 14.9 | 15.7 | 14.8 | 13.9 | 11.5 | 6.5 | 2.0 |
| 2011 | 4.4 | 7.5 | 6.4 | 11.1 | 12.2 | 13.3 | 14.7 | 14.5 | 14.5 | 12.9 | 10.3 | 7.3 |
| 2012 | 6.3 | 5.9 | 8.5 | 7.5 | 11.2 | 13.1 | 14.5 | 15.4 | 12.3 | 9.4 | 7.0 | 5.7 |
| 2013 | 4.6 | 3.8 | 3.0 | 6.7 | 9.7 | 12.9 | 16.4 | 15.2 | 13.1 | 12.6 | 7.3 | 7.7 |
| 2014 | 6.2 | 6.5 | 7.6 | 10.0 | 11.8 | 14.3 | 16.6 | 14.5 | 14.3 | 12.4 | 8.9 | 6.9 |
| 2015 | 5.7 | 5.0 | 6.3 | 7.9 | 10.3 | 13.3 | 14.7 | 14.9 | 12.3 | 11.2 | 10.0 | 10.0 |
| 2016 | 6.9 | 5.6 | 6.3 | 7.6 | 11.9 | 14.7 | 15.5 | 15.8 | 15.1 | 10.9 | 7.0 | 8.0 |
| 2017 | 6.1 | 6.9 | 8.2 | 8.7 | 12.7 | 14.7 | 15.4 | 15.1 | 13.4 | 12.5 | 8.0 | 6.6 |
| 2018 | 5.9 | 4.2 | 5.0 | 9.0 | 11.9 | 14.9 | 16.6 | 15.5 | 13.2 | 10.8 | 8.7 | 8.3 |
| 2019 | 5.9 | 7.7 | 7.8 | 9.5 | 10.9 | 13.7 | 16.2 | 16.0 | 13.9 | 10.4 | 7.3 | 7.1 |
| 2020 | 7.0 | 6.8 | 6.9 | 9.9 | 11.9 | 14.1 | 14.6 | 16.2 | 13.7 | 11.0 | 9.1 | 6.4 |
| 2021 | 4.9 | 6.1 | 7.1 | 7.1 | 10.1 | 14.3 | 16.5 | 15.3 | 15.4 | 12.4 | 9.4 | 7.2 |
| 2022 | 6.5 | 7.8 | 8.0 | 8.9 | 12.4 | 14.1 | 16.6 | 16.7 | 14.3 | 13.1 | 10.1 | 5.4 |
| 2023 | 6.8 | 7.5 | 7.3 | 9.0 | 12.5 | 16.2 | 15.6 | 15.8 | 16.1 | 12.1 | 8.6 | 8.3 |
| 2024 | 6.1 | 7.7 | 7.8 | 9.3 | 12.9 | 13.3 | 14.9 | 15.9 | 13.4 | 12.0 | 8.8 | |
* - Note that the actual mean for May 2009 may have been higher. The station was not collecting data for five days at the end of the month when the weather was warm.
Monthly Rainfall (mm) |
|||||||||||||
| Jan | Feb | Mar | Apr | May | Jun | July | Aug | Sep | Oct | Nov | Dec | Total | |
| 2002 | 40.0 | 94.3 | 22.5 | 166.0 | 183.3 | 108.8 | |||||||
| 2003 | 82.3 | 47.3 | 35.3 | 73.8 | 133.3 | 81.5 | 65.3 | 7.0 | 134.0 | 57.8 | 123.3 | 111.3 | 952.2 |
| 2004 | 114.5 | 83.8 | 46.5 | 38.8 | 36.5 | 42.5 | 75.5 | 129.5 | 122.8 | 171.8 | 82.8 | 102.5 | 1047.5 |
| 2005 | 70.8 | 52.8 | 40.0 | 106.5 | 49.8 | 33.5 | 64.3 | 51.8 | 89.3 | 198.0 | 163.8 | 56.78 | 977.4 |
| 2006 | 86.3 | 63.5 | 139.5 | 73.5 | 117.5 | 21.5 | 20.3 | 73.5 | 89.5 | 106.8 | 78.8 | 156.4 | 1027.1 |
| 2007 | 106.4 | 44.6 | 54.9 | 21.1 | 63.0 | 108.3 | 100.9 | 79.7 | 100.1 | 37.9 | 88.0 | 115.3 | 920.2 |
| 2008 | 160.0 | 58.6 | 79.9 | 84.9 | 25.2 | 108.4 | 64.0 | 95.2 | 100.8 | 248.9 | 85.2 | 82.9 | 1194.0 |
| 2009 | 77.4 | 13.9 | 43.1 | 42.1 | 61.7 | 55.0 | 106.8 | 98.0 | 39.9 | 72.3 | 234.7 | 113.8 | 958.7 |
| 2010 | 48.9 | 40.2 | 88.3 | 17.6 | 17.3 | 54.7 | 142.1 | 41.7 | 102.9 | 94.4 | 84.2 | 22.0 | 754.3 |
| 2011 | 56.7 | 103.8 | 22.9 | 39.0 | 71.4 | 48.3 | 59.6 | 90.1 | 155.3 | 98.3 | 72.1 | 142.7 | 960.2 |
| 2012 | 80.5 | 70.1 | 33.2 | 99.2 | 60.4 | 119.3 | 111.9 | 135.8 | 128.8 | 118.2 | 124.0 | 128.6 | 1210.0 |
| 2013 | 37.6 | 56.2 | 62.0 | 19.2 | 36.4 | 37.2 | 41.4 | 94.0 | 88.4 | 141.2 | 55.4 | 51.8 | 720.8 |
| 2014 | 110.0 | 84.8 | 78.4 | 35.8 | 123.6 | 76.8 | 55.4 | 108.2 | 16.6 | 189.4 | 102.6 | 116.8 | 1098.4 |
| 2015 | 106.0 | 53.2 | 72.4 | 44.2 | 145.8 | 37.6 | 73.4 | 66.8 | 57.8 | 54.6 | 193.0 | 318.0 | 1222.8 |
| 2016 | 137.2 | 79.8 | 76.6 | 71.2 | 39.0 | 84.8 | 89.4 | 82.0 | 69.8 | 36.0 | 84.8 | 69.8 | 920.4 |
| 2017 | 51.4 | 78.8 | 110.2 | 22.4 | 48.2 | 142.0 | 79.8 | 75.6 | 118.2 | 95.4 | 180.8 | 100.0 | 1102.8 |
| 2018 | 96.8 | 67.8 | 84.6 | 64.6 | 68.2 | 22.0 | 45.8 | 46.0 | 111.0 | 98.0 | 100.8 | 124.2 | 929.8 |
| 2019 | 66.2 | 67.6 | 144.0 | 59.8 | 42.6 | 104.0 | 62.8 | 93.0 | 125.4 | 160.6 | 98.0 | 85.2 | 1109.2 |
| 2020 | 123.4 | 160.6 | 57.8 | 18.4 | 11.0 | 88.4 | 139.0 | 151.2 | 59.6 | 175.6 | 129.8 | 187.4 | 1302.2 |
| 2021 | 188.2 | 78.8 | 43.8 | 7.6 | 100.4 | 43.6 | 45.4 | 60.2 | 100.6 | 196.6 | 76.0 | 115.8 | 1057.0 |
| 2022 | 55.8 | 82.2 | 29.6 | 31.2 | 67.2 | 43.8 | 25.2 | 66.2 | 81.8 | 119.0 | 144.2 | 136.8 | 883.0 |
| 2023 | 111.8 | 21.8 | 127.8 | 41.0 | 27.0 | 33.6 | 139.4 | 105.2 | 146.6 | 140.4 | 116.0 | 161.6 | 1172.2 |
| 2024 | 96.0 | 98.4 | 85.2 | 51.0 | 145.4* | 47.8 | 88.6 | 75.4 | 194.2 | 219.3 | 245.6 | ||
* - Note that the actual rainfall for May 2024 may be inaccurate, due to problems with the rain gauge.
Seasonal Total Rainfall (mm) |
||||
| Winter | Spring | Summer | Autumn | |
| 2002 | 134.3 | 371.8 | ||
| 2003 | 238.3 | 242.3 | 153.8 | 315.0 |
| 2004 | 309.5 | 121.8 | 247.5 | 377.3 |
| 2005 | 226.0 | 196.3 | 149.5 | 451.0 |
| 2006 | 206.5 | 330.5 | 115.3 | 275.0 |
| 2007 | 307.4 | 139.0 | 288.9 | 226.0 |
| 2008 | 333.9 | 190.0 | 267.7 | 434.9 |
| 2009 | 174.2 | 146.9 | 259.8 | 346.9 |
| 2010 | 202.9 | 123.2 | 238.5 | 281.6 |
| 2011 | 182.5 | 133.3 | 197.9 | 325.7 |
| 2012 | 293.4 | 192.7 | 367.0 | 371.0 |
| 2013 | 222.4 | 117.6 | 172.6 | 285.0 |
| 2014 | 246.6 | 237.8 | 240.4 | 308.6 |
| 2015 | 276.0 | 262.4 | 177.8 | 305.4 |
| 2016 | 535.0 | 186.8 | 256.2 | 190.6 |
| 2017 | 200.0 | 180.8 | 297.4 | 394.4 |
| 2018 | 264.6 | 217.4 | 113.8 | 309.8 |
| 2019 | 258.0 | 246.4 | 259.8 | 384.0 |
| 2020 | 369.2 | 87.2 | 378.6 | 365.0 |
| 2021 | 454.4 | 151.8 | 149.2 | 373.2 |
| 2022 | 253.8 | 128.0 | 135.2 | 345.0 |
| 2023 | 270.4 | 195.8 | 278.2 | 403.0 |
| 2024 | 356.0 | 281.6* | 211.8 | |
* - Note that the actual rainfall for May 2024 may be inaccurate, due to problems with the rain gauge.
Affiliations
Other weather links
BBC - Recent conditions and five day forecast for Pentraeth
Llansadwrn - Extensive weather pages for a nearby village.
Valley weather data (Met Office) - Weather data for last 24 hours from Valley, Anglesey
Hint.FM wind map - Fascinating animated map of winds over the USA, done by artists Fernanda Viégas and Martin Wattenberg, who work for Google.
Snowdon Live - Weather on top of Snowdon, the highest mountain in Wales & England.
A new book by Warren Kovach, author of this web site
We're on Social Media
Facebook: 
BlueSky: 
Mastodon: 
Threads: 
X/Twitter: 