River Thames (Port Meadow) Water Temperature Today
River Thames (Port Meadow), a river swimming spot in Oxfordshire, United Kingdom. The water peaks in the high teens to low twenties in July and August, and is cold but ice-free in winter.
In August River Thames (Port Meadow) averages about 21°C, peaking near 21°C in July, August, September and dropping to roughly 6°C at its coldest.
River and swimming-hole temperatures are modelled from long-term monthly averages and refined with live air temperature, wind and UV. Moving water reacts faster to the weather than a lake or the sea.
River Thames (Port Meadow) water temperature by month
| Month | Average water temperature | Swimming |
|---|---|---|
| January | 7.0°C | cold |
| February | 6.0°C | cold |
| March | 7.0°C | cold |
| April | 9.8°C | cold |
| May | 13.5°C | cool |
| June | 17.3°C | mild |
| July | 20.0°C | warm |
| August | 21.0°C | warm |
| September | 20.0°C | warm |
| October | 17.3°C | mild |
| November | 13.5°C | cool |
| December | 9.8°C | cold |
River Thames (Port Meadow) swim conditions FAQ
What is the water temperature in River Thames (Port Meadow) right now?
In August the water in River Thames (Port Meadow) averages about 21°C. We refine that long-term average with today's air temperature, because this river responds quickly to the weather.
When is the best time to swim in River Thames (Port Meadow)?
The comfortable swim season — 18°C or warmer — runs through July, August, September, with the warmest water in July, August, September at around 21°C.
Can you swim in River Thames (Port Meadow) in winter?
Yes, but winter temperatures drop to roughly 6°C. Below 12°C, cold-water shock is the main risk: enter slowly, never swim alone, and limit time in the water.
Is River Thames (Port Meadow) safe for swimming?
Moving and inland water carries different risks from the sea: check flow after rain, avoid weirs and undercut banks, look for submerged rocks before jumping, and respect local access rules and water-quality notices.
Water safety tips
- Check the flow rate after heavy rain — inland water can rise and speed up within hours.
- Never jump before checking depth and submerged rocks; levels change through the season.
- Enter slowly to control cold-water shock, and get out before you start shivering.
- Swim with someone else and agree an exit point downstream before you start.
Swim season here: July, August, September.
Nearby swim spots
More swim spots in United Kingdom
- River Dart water temperature
- River Barle water temperature
- River Avon (Warwickshire) water temperature
- River Wye water temperature
- River Severn water temperature
- Hampstead Heath Ponds water temperature
- River Cam water temperature
- River Lark water temperature
- All rivers & swimming holes
- All lake water temperatures
- Sea temperatures in United Kingdom