Live wave, wind and sea temperature for Porthpean, Carlyon Bay and Pentewan — a quick read on whether it's calm enough for a swim.
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A read on the sea before you head down for a swim: wave size, wind, and sea temperature for the bay's beaches. The numbers come from open-water weather models at the mouth of the bay — St Austell Bay's beaches are sheltered, so what you find on the sand is often calmer than the reading here, especially when the wind is from the south-west.
No lifeguards on these beaches
The family swimming beach, tucked into the west side of the bay — usually calmer than the open-water reading suggests.
Calm sea — about as settled as this coast gets
| Day | Waves | Wind | Looks like |
|---|---|---|---|
| Fri 10 Jul | 0.6 m · 2 ft | 4 mph ESE (onshore) | A light swell — expect some movement in the water |
| Sat 11 Jul | 1.0 m · 3 ft | 6 mph ESE (onshore) | A lively sea — hard work to swim in; think twice |
| Sun 12 Jul | 1.2 m · 4 ft | 14 mph E (onshore) | A lively sea — hard work to swim in; think twice |
| Mon 13 Jul | 1.8 m · 6 ft | 13 mph E (onshore) | Rough sea — not a day for swimming |
| Tue 14 Jul | 1.7 m · 6 ft | 13 mph ESE (onshore) | Rough sea — not a day for swimming |
The most open of the three beaches — this reading is the closest match to what you'll find on the sand.
Calm sea — about as settled as this coast gets
| Day | Waves | Wind | Looks like |
|---|---|---|---|
| Fri 10 Jul | 0.5 m · 2 ft | 6 mph SE (onshore) | A light swell — expect some movement in the water |
| Sat 11 Jul | 0.8 m · 2 ft | 8 mph ESE (onshore) | Small but choppy — harder work than it looks from the beach |
| Sun 12 Jul | 1.0 m · 3 ft | 14 mph E (cross-shore) | A lively sea — hard work to swim in; think twice |
Sheltered by Black Head from the south and west, with rock pools to explore at low water.
Calm sea — about as settled as this coast gets
| Day | Waves | Wind | Looks like |
|---|---|---|---|
| Fri 10 Jul | 0.6 m · 2 ft | 5 mph E (onshore) | A light swell — expect some movement in the water |
| Sat 11 Jul | 0.9 m · 3 ft | 9 mph E (onshore) | A lively sea — hard work to swim in; think twice |
| Sun 12 Jul | 1.2 m · 4 ft | 15 mph E (onshore) | A lively sea — hard work to swim in; think twice |
| Mon 13 Jul |
A forecast is not a lifeguard
Forecast updated 9 July at 23:21. Weather and marine data by Open-Meteo (CC BY 4.0).
| Mon 13 Jul | 1.4 m · 5 ft | 13 mph E (cross-shore) | A lively sea — hard work to swim in; think twice |
| Tue 14 Jul | 1.3 m · 4 ft | 13 mph ESE (onshore) | A lively sea — hard work to swim in; think twice |
| 1.7 m · 6 ft |
| 15 mph E (onshore) |
| Rough sea — not a day for swimming |
| Tue 14 Jul | 1.6 m · 5 ft | 14 mph ESE (onshore) | Rough sea — not a day for swimming |