San Agustinillo Water Temperature & Swim Forecast
Popular Pacific Coast beach near San Agustinillo.
Very warm water with a light chop and a light breeze — great swimming conditions.
Model estimate · modelled, not a buoy measurement. How accurate is this?
Location
San Agustinillo on the map, with nearby beaches and live sea temperatures.
7-day forecast
Water, air, waves, wind and UV outlook for the week ahead.
No wetsuit
At 29.5°C the water is warm enough to swim and surf in just a swimsuit or boardshorts.
Recommendation tuned for San Agustinillo's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.
San Agustinillo swimming conditions summary
- Water temperature
- 29.5°C
- Water feels
- Bath-warm
- Swimmable today
- Yes — comfortable for most swimmers
- Swim conditions score
- 85/100 · Excellent
- Wetsuit needed
- No wetsuit
- Air temperature
- —
- Waves
- —
- Wind
- —
- UV index
- —
- Average sea temperature (September)
- 29.0 °C
- Warmest months to swim
- July, August, September
At 29.5°C the water is warm enough to swim and surf in just a swimsuit or boardshorts. 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 San Agustinillo right now?
The sea at San Agustinillo is currently 29.5°C — excellent 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 San Agustinillo next week?
Based on long-term September averages and the latest marine model, expect the sea around San Agustinillo to sit close to 28.3°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 San Agustinillo?
July – August – September are typically the warmest months to swim at San Agustinillo, with sea temperatures at their seasonal peak.
Do I need a wetsuit at San Agustinillo?
With water currently at 29.5°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 San Agustinillo today?
The sea is currently 29.5°C — excellent swimming conditions. Most swimmers will find it pleasant.
- • Located in Pacific Coast, Mexico (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 San Agustinillo
The sea in San Agustinillo peaks in July, when the water averages around 29°C.
The main swimming season runs from January – December, when surface temperatures stay comfortable for extended sessions.
On average, 12 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
The coldest month is typically January at around 25°C, when cold-water swimmers dominate the coast.
San Agustinillo sea temperature history
Long-term climatology for San Agustinillo shows an annual mean sea temperature of 27°C, ranging from 25°C in winter to 29°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 San Agustinillo, 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.
San Agustinillo sea temperature: frequently asked questions
What is the warmest month to swim in San Agustinillo?
July is the warmest month in San Agustinillo, when the sea averages about 29°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in San Agustinillo?
The coldest month in San Agustinillo is typically January, when the water averages around 25°C. Cold-water swimmers and surfers dominate this period.
When can you swim in San Agustinillo without a wetsuit?
The main swimming season in San Agustinillo runs from January – December — about 12 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 San Agustinillo?
San Agustinillo stays warm year-round, so most swimmers never need a wetsuit — a rash guard is usually enough for sun and wildlife protection.
What is the average sea temperature in San Agustinillo?
The long-term annual mean sea temperature in San Agustinillo is about 27°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in San Agustinillo?
The live reading at the top of this page shows the current sea temperature in San Agustinillo, 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: Jan – Feb – Mar – Apr – May – Jun – Jul – Aug – Sep – Oct – Nov – Dec
| Month | Sea | Comfort |
|---|---|---|
| Jan | 25°C | Warm |
| Feb | 25°C | Warm |
| Mar | 25°C | Warm |
| Apr | 26°C | Hot |
| May | 27°C | Hot |
| Jun | 28°C | Hot |
| Jul ⭐ | 29°C | Hot |
| Aug | 29°C | Hot |
| Sep | 29°C | Hot |
| Oct | 28°C | Hot |
| Nov | 27°C | Hot |
| Dec | 26°C | Hot |
Nearby beaches
The closest coastline, with live water temperatures.