Pismo Beach Water Temperature & Swim Forecast
Popular Central California beach near Pismo Beach.
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Location
Pismo Beach on the map, with nearby beaches and live sea temperatures.
7-day forecast
Water, air, waves, wind and UV outlook for the week ahead.
Check live temperature
Live water temperature is loading — refresh in a moment for a precise recommendation.
Recommendation tuned for Pismo Beach's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.
Pismo Beach swimming conditions summary
- Water temperature
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- Water feels
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- Swimmable today
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- Swim conditions score
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- Wetsuit needed
- Check live temperature
- Air temperature
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- Waves
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- Wind
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- UV index
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- Warmest months to swim
- July, August, September
Live water temperature is loading — refresh in a moment for a precise recommendation. Live marine data updated hourly from Open-Meteo Marine.
Frequently asked questions
Can I swim at Pismo Beach right now?
Live data is loading. Use the 7-day forecast above to plan your swim — conditions above 22°C are comfortable for most swimmers.
What will the sea temperature be at Pismo Beach next week?
Based on long-term August averages and the latest marine model, expect the sea around Pismo Beach to sit close to 16.0°C over the next 7 days. Check the live 7-day chart above for the exact daily outlook.
When is the best month to swim at Pismo Beach?
July – August – September are typically the warmest months to swim at Pismo Beach, with sea temperatures at their seasonal peak.
Can I swim at Pismo Beach today?
Live data is loading. In summer, this beach typically offers comfortable swimming conditions.
- • Located in Central California, United States (Pacific Ocean).
- • Family friendly with calm, accessible water.
- • Live data refreshed hourly from Open-Meteo Marine.
Monthly sea temperature averages
Tap any month to see what to expect — based on regional climatology.
Best time to swim in Pismo Beach
The sea in Pismo Beach peaks in August, when the water averages around 16°C.
On average, 0 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
Outside peak season the water drops toward 12°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.
The coldest month is typically January at around 12°C, when cold-water swimmers dominate the coast.
Pismo Beach sea temperature history
Long-term climatology for Pismo Beach shows an annual mean sea temperature of 14°C, ranging from 12°C in winter to 16°C at the summer peak.
The seasonal swing is roughly 4°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.
Recent decades have trended slightly warmer at Pismo Beach, in line with regional sea-surface temperature records for the wider basin.
Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.
Pismo Beach sea temperature: frequently asked questions
What is the warmest month to swim in Pismo Beach?
August is the warmest month in Pismo Beach, when the sea averages about 16°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Pismo Beach?
The coldest month in Pismo Beach is typically January, when the water averages around 12°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Pismo Beach without a wetsuit?
The sea in Pismo Beach rarely climbs above 20°C, so a wetsuit is recommended year-round for anything longer than a quick dip.
Do I need a wetsuit in Pismo Beach?
Outside peak summer the water in Pismo Beach drops toward 12°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable. In peak months most swimmers go without.
What is the average sea temperature in Pismo Beach?
The long-term annual mean sea temperature in Pismo Beach is about 14°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Pismo Beach?
The live reading at the top of this page shows the current sea temperature in Pismo Beach, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Year-round sea temperature
| Month | Sea | Comfort |
|---|---|---|
| Jan | 12°C | Cold |
| Feb | 12°C | Cold |
| Mar | 12°C | Cold |
| Apr | 12°C | Cold |
| May | 13°C | Cold |
| Jun | 14°C | Bracing |
| Jul | 15°C | Bracing |
| Aug ⭐ | 16°C | Bracing |
| Sep | 16°C | Bracing |
| Oct | 15°C | Bracing |
| Nov | 14°C | Bracing |
| Dec | 13°C | Cold |
Nearby beaches
The closest coastline, with live water temperatures.