Ponza Water Temperature
Updated Thu 12:54 (Europe/Rome)
Italy · Forecast updated Sep 24, 2026, 12:54 UTC
Current Sea Temperature
26.6°C
79.9°F
Warm water
Valid Sep 24, 2026, 12:54 (Europe/Rome). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
1.6°C above
The typical September average is 25.0°C (77.0°F) from the historical baseline.
Recent trend
Cooling by 0.9°C
Seven-day average: 27.0°C, versus 27.9°C in the prior seven days.
What to wear
Warm water
Most people are comfortable in swimwear or a light rash guard.
Cold tolerance varies. Wind, session length, sunshine, and exertion also affect comfort; temperature alone does not describe sea conditions or replace the snorkel forecast.
Typical Sea Temperature Over the Year
In the historical baseline for Ponza, typical monthly averages range from about 15.1°C (59.2°F) in February to 27.1°C (80.8°F) in July.
Over the past 30 days, the average sea temperature in Ponza has been 28.3°C.
Historical baseline (full year)
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Ponza, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 16.0–16.5°C | 16.2°C / 61.2°F |
| February | 14.9–15.3°C | 15.1°C / 59.2°F |
| March | 14.8–15.6°C | 15.3°C / 59.5°F |
| April | 15.8–17.0°C | 16.5°C / 61.7°F |
| May | 18.8–19.9°C | 19.3°C / 66.7°F |
| June | 23.2–25.1°C | 24.1°C / 75.4°F |
| July | 26.9–27.3°C | 27.1°C / 80.8°F |
| August | 25.4–29.1°C | 27.1°C / 80.8°F |
| September | 24.4–25.5°C | 25.0°C / 77.0°F |
| October | 22.0–23.7°C | 22.6°C / 72.7°F |
| November | 19.6–20.4°C | 19.9°C / 67.8°F |
| December | 17.2–17.7°C | 17.5°C / 63.5°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (40.88, 12.96). Each month is the mean of yearly monthly means; the range is the lowest and highest of those yearly monthly means. Open-Meteo methodology.
Water temperature by month
Each month uses the 2023–2025 baseline. The range is the lowest and highest yearly monthly mean, not an hourly extreme.
Ponza in January
Typical January water temperature near Ponza is 16.2°C (61.2°F), with yearly monthly means from 16.0–16.5°C.
Ponza in February
Typical February water temperature near Ponza is 15.1°C (59.2°F), with yearly monthly means from 14.9–15.3°C.
Ponza in March
Typical March water temperature near Ponza is 15.3°C (59.5°F), with yearly monthly means from 14.8–15.6°C.
Ponza in April
Typical April water temperature near Ponza is 16.5°C (61.7°F), with yearly monthly means from 15.8–17.0°C.
Ponza in May
Typical May water temperature near Ponza is 19.3°C (66.7°F), with yearly monthly means from 18.8–19.9°C.
Ponza in June
Typical June water temperature near Ponza is 24.1°C (75.4°F), with yearly monthly means from 23.2–25.1°C.
Ponza in July
Typical July water temperature near Ponza is 27.1°C (80.8°F), with yearly monthly means from 26.9–27.3°C.
Ponza in August
Typical August water temperature near Ponza is 27.1°C (80.8°F), with yearly monthly means from 25.4–29.1°C.
Ponza in September
Typical September water temperature near Ponza is 25.0°C (77.0°F), with yearly monthly means from 24.4–25.5°C.
Ponza in October
Typical October water temperature near Ponza is 22.6°C (72.7°F), with yearly monthly means from 22.0–23.7°C.
Ponza in November
Typical November water temperature near Ponza is 19.9°C (67.8°F), with yearly monthly means from 19.6–20.4°C.
Ponza in December
Typical December water temperature near Ponza is 17.5°C (63.5°F), with yearly monthly means from 17.2–17.7°C.
Forecast archive (growing)
These values come from hourly forecasts SnorkelForecast has stored. They cover only months with records and do not replace the historical baseline.
| Month | Min | Average | Max |
|---|---|---|---|
| June | 22.1°C / 71.8°F | 25.0°C / 77.0°F | 29.0°C / 84.2°F |
| July | 27.0°C / 80.6°F | 28.5°C / 83.4°F | 30.4°C / 86.7°F |
| August | 28.7°C / 83.7°F | 29.5°C / 85.1°F | 30.3°C / 86.5°F |
| September | 25.8°C / 78.4°F | 27.8°C / 82.0°F | 29.3°C / 84.7°F |
Partial coverage: 4 calendar months with records. Profile calculated from 2781 hourly forecast records across 4 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Ponza
Pontine island with sea caves and clear coves popular for snorkeling.
- Area
- Lazio
Ponza Water Temperature: Common Questions
What is the water temperature in Ponza today?
The current sea surface temperature near Ponza is 26.6°C (79.9°F). Over the last 30 days, the average has been 28.3°C.
When is the water warmest in Ponza?
The water is typically warmest in July, at around 27.1°C (80.8°F) in the 2023–2025 historical baseline.
When is the water coldest in Ponza?
The water is typically coldest in February, at around 15.1°C (59.2°F) in the same historical baseline. A wetsuit is usually recommended during this period.
Can you swim in Ponza today?
At 26.6°C, the water is usually comfortable for swimming and snorkeling.
Full Snorkeling Forecast
See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Ponza.
View Snorkel Forecast →