River temperature

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Air temperature

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Flow rate

Reading
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Maidenhead
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Sewage status (Wargrave)

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Weather

Next 24 hours

Sun & Moon

🌅 Sunrise
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🌇 Sunset
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🌕
Next full moon
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Moonrise: —
Moon reaches 15°: —
Estimated viewing time

Temperatures

Flow rate

Swim stretch

Notes

  • This info is aggregated from other publicly available information sources; treat as indicative, not official safety advice.
  • Temperature data from just above Shiplake Lock, via publicly available CSV files
  • Flow data from the Environment Agency station API at Maidenhead (closest available).
  • Sewage discharge status from Thames Water API
  • WE ARE NOT A CLUB
  • This is very much a work-in-progress, I'll be refining/adding things every now and then, such as weather details, discharge details etc
  • Jon


    16OCT26 - Added Sun & Moon card, with next sunrise and sunset, and next full moon with suggested swim date.
    06OCT26 - Split the flow rate card, so it includes Reading as well as (original) Maidenhead. Also upgraded to new TW API, as old one was going very patchy.
    18FEB26 - Adding new card, to show river boards from EA site, seeing as it's raining so much at the moment
    17FEB26 - Added date-driven icons for snow, starting with pancake day! And, possibly less tasteless when sewage is discharging, let's see what we think of that.
    08JAN26 - Christmas mode now automatic between 1 Dec to 1 Jan inclusive, then from 2 Jan to end of Feb optional snow, which remembers whether you've toggled it on or off.
    25DEC25 - Added Christmas mode! Why didn't I think of that earlier in the month?! It'll be available during December from now on.
    08OCT25 - Cleaned up weather forecast, putting it behind a show/hide toggle, also fixing issue with daily vs hourly differences by aggregating rainfall. Also caching for 15 mins rather than requesting every time, to avoiding exceeding Met Office limits.
    05OCT25 - Signed up Met Office account and used that to retrieve daily forecast in tiles and hourly forecasts in scroller. Added blatant self-promotion for upcoming gig in the header, because my site my rules.
    04OCT25 - Fixed issue with charts not showing enough history; registered domain name and configured DNS/subdomain; expanded notes section.