D Street Beach Water Temperature & Swim Forecast
Central Encinitas family beach.
Pleasant water with a light chop and a light breeze — good swimming conditions.
Model estimate · modelled, not a buoy measurement. How accurate is this?
Location
D Street 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.
Shorty 2mm
At 21.0°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene.
Recommendation tuned for D Street Beach's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.
D Street Beach swimming conditions summary
- Water temperature
- 21.0°C
- Water feels
- Pleasant
- Swimmable today
- Yes — comfortable for most swimmers
- Swim conditions score
- 82/100 · Excellent
- Wetsuit needed
- Shorty 2mm
- Air temperature
- —
- Waves
- —
- Wind
- —
- UV index
- —
- Average sea temperature (September)
- 21.0 °C
- Warmest months to swim
- July, August, September
At 21.0°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene. Model estimate. Water, wave, wind and UV values are Open-Meteo marine/weather model estimates, refreshed hourly — not buoy measurements.
Frequently asked questions
Can I swim at D Street Beach right now?
The sea at D Street Beach is currently 21.0°C — good swimming conditions. Most swimmers will find the water comfortable when it's above 22°C; below 18°C feels fresh and a wetsuit is recommended.
What will the sea temperature be at D Street Beach next week?
Based on long-term September averages and the latest marine model, expect the sea around D Street Beach to sit close to 20.3°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 D Street Beach?
July – August – September are typically the warmest months to swim at D Street Beach, with sea temperatures at their seasonal peak.
Do I need a wetsuit at D Street Beach?
With water currently at 21.0°C: above 22°C no wetsuit needed; 18–22°C a shorty is comfortable for long swims; 14–18°C a 3/2mm full suit; below 14°C a 4/3mm or thicker.
Can I swim at D Street Beach today?
The sea is currently 21.0°C — excellent swimming conditions. Most swimmers will find it pleasant.
- • Located in Southern 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 D Street Beach
The sea in D Street Beach peaks in August, when the water averages around 22°C.
The main swimming season runs from July – October, when surface temperatures stay comfortable for extended sessions.
On average, 4 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
Shoulder months like June and November are noticeably cooler but often quieter, with fewer crowds and steadier weather.
Outside peak season the water drops toward 15°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.
The coldest month is typically January at around 15°C, when cold-water swimmers dominate the coast.
D Street Beach sea temperature history
Long-term climatology for D Street Beach shows an annual mean sea temperature of 18°C, ranging from 15°C in winter to 22°C at the summer peak.
The seasonal swing is roughly 7°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 D Street 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.
D Street Beach sea temperature: frequently asked questions
What is the warmest month to swim in D Street Beach?
August is the warmest month in D Street Beach, when the sea averages about 22°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in D Street Beach?
The coldest month in D Street Beach is typically January, when the water averages around 15°C. Cold-water swimmers and surfers dominate this period.
When can you swim in D Street Beach without a wetsuit?
The main swimming season in D Street Beach runs from July – October — about 4 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.
Do I need a wetsuit in D Street Beach?
Outside peak summer the water in D Street Beach drops toward 15°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 D Street Beach?
The long-term annual mean sea temperature in D Street Beach is about 18°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in D Street Beach?
The live reading at the top of this page shows the current sea temperature in D Street 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
Best swim months: Jul – Aug – Sep – Oct
| Month | Sea | Comfort |
|---|---|---|
| Jan | 15°C | Bracing |
| Feb | 15°C | Bracing |
| Mar | 15°C | Bracing |
| Apr | 16°C | Bracing |
| May | 17°C | Bracing |
| Jun | 19°C | Pleasant |
| Jul | 21°C | Pleasant |
| Aug ⭐ | 22°C | Warm |
| Sep | 21°C | Pleasant |
| Oct | 20°C | Pleasant |
| Nov | 17°C | Bracing |
| Dec | 16°C | Bracing |
Nearby beaches
The closest coastline, with live water temperatures.